# Best Protein Powder Without Heavy Metals > The best protein powder without heavy metals, ranked only on published lead tests from Consumer Reports, NSF and brand CoAs, plus plant vs whey and Prop 65 explained. - **URL**: https://www.best-proteinpowder.com/best-protein-powder-without-heavy-metals/ - **Updated**: 2026-11-08 - **Author**: [Best Protein Powder Editorial Team](https://www.best-proteinpowder.com/authors/editorial-team/) - **Publisher**: [Best Protein Powder](https://www.best-proteinpowder.com/) --- Seven powders ranked only on published evidence: Consumer Reports' 2025 and 2026 lead testing, contaminant-inclusive certification and lot-level brand testing, with the source and year named for every claim. **How we rank:** We judge every powder on the label, not the marketing: protein per scoop, cost per 25 g of protein, the full ingredient list and third-party testing. No paid placements, and commission never sets a ranking. [Read our methodology](https://www.best-proteinpowder.com/how-we-test/) No protein powder is completely free of heavy metals, because lead and cadmium come from soil and turn up in almost every food. What you can do is choose a powder with published, independent results showing low levels. On the evidence so far, that means a dairy-based powder, ideally vanilla or unflavored, from a product Consumer Reports has tested low or a brand that publishes lot-by-lot results. ## Our Top Picks | Award | Product | Why | | --- | --- | --- | | Best Overall (Published Low Lead) | [Optimum Nutrition Gold Standard 100% Whey](https://www.best-proteinpowder.com/best-protein-powder-without-heavy-metals/#optimum-nutrition-gold-standard-100-whey) | The best-documented mainstream whey for daily use on published lead data. | | Lowest Lead in CR's 2026 Follow-Up | [Clean Simple Eats Whey Isolate Protein Powder](https://www.best-proteinpowder.com/best-protein-powder-without-heavy-metals/#clean-simple-eats-whey-protein-powder) | The lowest-lead chocolate powder in CR's published follow-up. | | Best Budget Blend | [BSN Syntha-6 Protein Powder, Vanilla Ice Cream](https://www.best-proteinpowder.com/best-protein-powder-without-heavy-metals/#bsn-syntha-6-protein-powder) | A low-lead, budget dairy blend for people who want a thicker shake and can afford the calories. | | Most Protein per Scoop | [Premier Protein 100% Whey Protein Powder, Chocolate Milkshake](https://www.best-proteinpowder.com/best-protein-powder-without-heavy-metals/#premier-protein-100-whey-chocolate-milkshake) | A low-lead chocolate whey that delivers a big protein dose per serving. | | Best Plant-Based | [Truvani Organic Plant Based Protein Powder, Chocolate](https://www.best-proteinpowder.com/best-protein-powder-without-heavy-metals/#truvani-organic-plant-based-protein-chocolate) | The plant protein with the best published lead result we could find, used once a day. | | Best NSF Certified | [Thorne Whey Protein Isolate](https://www.best-proteinpowder.com/best-protein-powder-without-heavy-metals/#thorne-whey-protein-isolate) | The pick if you want an independent certifier checking contaminants on every lot. | | Best for Published Lot Testing | [Transparent Labs 100% Grass-Fed Whey Protein Isolate](https://www.best-proteinpowder.com/best-protein-powder-without-heavy-metals/#transparent-labs-grass-fed-whey-protein-isolate) | The best choice for buyers who want lot-level paperwork, not just a reputation. | ## 1. Quick Comparison: Lowest-Lead Protein Powders on Published Tests No protein powder is completely free of heavy metals. Lead, cadmium and arsenic come from soil and water, so trace amounts show up in almost every food, including milk, vegetables and cocoa. The useful question is which powders have published, independent test results showing low levels, and the short answer is that dairy-based powders in vanilla or lightly flavored versions consistently test lowest. The table below lists the seven picks and the source behind each one. | Product | Protein/scoop | Calories | Sugar | Price tier | Certification / lead source | | --- | --- | --- | --- | --- | --- | | ON Gold Standard 100% Whey | About 24 g | About 120 | About 1 g | Budget | CR Oct 2025: ~56% of LOC; Informed Choice (brand) | | Clean Simple Eats Whey Isolate | About 20 g | About 110 | Low (stevia-sweetened) | Mid | CR Jan 2026: ~42% of LOC (reported) | | BSN Syntha-6 | About 22 g | About 190-200 | About 2 g | Budget | CR Oct 2025: ~46% of LOC | | Premier Protein 100% Whey | 30 g (2 scoops) | About 150 | 1 g | Budget-mid | CR Jan 2026: ~77% of LOC (reported) | | Truvani Plant (Chocolate) | About 20 g | About 130 | About 2 g | Premium | CR Jan 2026: ~93% of LOC (reported) | | Thorne Whey Isolate | About 21 g | About 100 | Low (some cane sugar) | Premium | NSF Certified for Sport (brand, NSF) | | Transparent Labs Whey Isolate | 28 g | About 120-150 | Low (varies by flavor) | Premium | Brand lot CoAs; Informed Choice (brand) | LOC means Consumer Reports' daily lead level of concern of 0.5 micrograms. Percentages are per serving and come from Consumer Reports' October 2025 investigation or its January 2026 follow-up, as published by CR or reported in coverage of it. Nutrition figures come from each label at the time of writing and vary by flavor. We did not test any product ourselves; our [how we test](https://www.best-proteinpowder.com/how-we-test/) page explains how we rank products from published data. ## 2. The Best Protein Powders Without Heavy Metals, Ranked Every pick below has a named, published source for its heavy-metal standing: five from Consumer Reports' October 2025 investigation or its January 2026 follow-up, one from NSF certification and one from the brand's own lot testing. The results apply to the product and flavor tested, so check the flavor you buy. Nutrition figures come from each label at the time of writing. ### 1. Optimum Nutrition Gold Standard 100% Whey **Award:** Best Overall (Published Low Lead) | **Type:** Whey blend (isolate, concentrate, peptides) - **Protein / serving:** About 24 g (label) - **Calories:** About 120 - **Lead data:** CR 2025: ~56% of level of concern (chocolate) - **Best for:** Daily whey users In Consumer Reports' October 2025 protein investigation, Gold Standard 100% Whey in chocolate measured about 56% of CR's daily lead level of concern per serving, and CR placed it among its better choices for daily use, at up to about 1.75 servings a day. Per the label at the time of writing, a scoop gives about 24 g of protein in roughly 120 calories with about 1 g of sugar. It is widely sold, often discounted, and promoted by the brand as Informed Choice certified. **Bottom line:** The best-documented mainstream whey for daily use on published lead data. **Pros:** - Consumer Reports (Oct 2025): about 56% of its lead level of concern per serving, chocolate flavor - About 24 g of protein in roughly 120 calories per the label - Budget-tier cost per gram at typical retail prices **Cons:** - CR tested one flavor across a few lots; other flavors and future lots are untested by CR - Contains artificial sweetener and soy lecithin - Informed Choice screens for banned substances, not heavy metals [Check price on Amazon](https://www.amazon.com/dp/B000GISTZ4?tag=sktiger-20&linkCode=ll1) ### 2. Clean Simple Eats Whey Isolate Protein Powder **Award:** Lowest Lead in CR's 2026 Follow-Up | **Type:** Grass-fed whey protein isolate - **Protein / serving:** About 20 g (label) - **Calories:** About 110 - **Lead data:** CR 2026: ~42% of level of concern (chocolate) - **Best for:** Chocolate lovers Consumer Reports tested five reader-requested chocolate powders in January 2026, and Clean Simple Eats had the lowest lead of the group, reported at about 0.21 micrograms per serving, or roughly 42% of CR's level of concern. Per the label at the time of writing, a scoop gives about 20 g of grass-fed whey isolate protein in roughly 110 calories, sweetened with stevia. It is a good option for anyone who wants a chocolate powder, the flavor that usually tests highest. **Bottom line:** The lowest-lead chocolate powder in CR's published follow-up. **Pros:** - Consumer Reports (Jan 2026): lowest lead of five chocolate powders tested, about 42% of its level of concern as reported - Whey isolate base, which tends to test lower than plant proteins - Stevia-sweetened, with no sucralose **Cons:** - Only about 20 g of protein per scoop - No NSF or Informed Choice certification confirmed - Mid-tier cost per gram of protein [Check price on Amazon](https://www.amazon.com/dp/B0912XJ8H4?tag=sktiger-20&linkCode=ll1) ### 3. BSN Syntha-6 Protein Powder, Vanilla Ice Cream **Award:** Best Budget Blend | **Type:** Multi-source dairy protein blend - **Protein / serving:** About 22 g (label) - **Calories:** About 190-200 - **Lead data:** CR 2025: ~46% of level of concern (vanilla) - **Best for:** Budget, creamy shakes Syntha-6 in Vanilla Ice Cream measured about 46% of Consumer Reports' lead level of concern per serving in its October 2025 testing, and CR listed it among its better choices for daily use, at up to about two servings a day. Retail labels list about 22 g of protein in roughly 190 to 200 calories per scoop, from a blend of whey, casein and milk proteins with some added fat. It is thicker and more dessert-like than an isolate. **Bottom line:** A low-lead, budget dairy blend for people who want a thicker shake and can afford the calories. **Pros:** - Consumer Reports (Oct 2025): about 46% of its lead level of concern per serving, Vanilla Ice Cream - Creamy, milkshake-style texture from a whey and casein blend, per buyer reports - Budget-tier cost per serving at typical retail prices **Cons:** - Roughly 190-200 calories per scoop, much more than an isolate - Only about 22 g of protein per scoop for those calories - No sport certification confirmed; artificial sweeteners [Check price on Amazon](https://www.amazon.com/dp/B000GP5HJI?tag=sktiger-20&linkCode=ll1) ### 4. Premier Protein 100% Whey Protein Powder, Chocolate Milkshake **Award:** Most Protein per Scoop | **Type:** Whey isolate and concentrate - **Protein / serving:** 30 g per 2 scoops (label) - **Calories:** About 150 - **Lead data:** CR 2026: ~77% of level of concern (chocolate) - **Best for:** High-protein shakes Premier Protein's chocolate powder was one of the five products in Consumer Reports' January 2026 follow-up, and coverage of those results reported about 0.38 micrograms of lead per serving, roughly 77% of CR's level of concern. Per the label at the time of writing, two scoops give 30 g of protein in about 150 calories with 1 g of sugar. That is the most protein per serving of any pick here. **Bottom line:** A low-lead chocolate whey that delivers a big protein dose per serving. **Pros:** - Consumer Reports (Jan 2026): under its lead level of concern per serving, about 77% as reported - 30 g of protein per two-scoop serving per the label - Widely available at a budget-to-mid cost per gram **Cons:** - Sweetened with sucralose and acesulfame potassium - Two scoops per serving, so tubs run out faster - No sport certification confirmed [Check price on Amazon](https://www.amazon.com/dp/B06Y5ZG66K?tag=sktiger-20&linkCode=ll1) ### 5. Truvani Organic Plant Based Protein Powder, Chocolate **Award:** Best Plant-Based | **Type:** Organic pea-based blend with cocoa - **Protein / serving:** About 20 g (label) - **Calories:** About 130 - **Lead data:** CR 2026: ~93% of level of concern (chocolate) - **Best for:** Dairy-free, once daily Plant powders usually test highest for lead, which makes Truvani's result notable. In Consumer Reports' January 2026 follow-up, its chocolate powder was reported at about 0.46 micrograms of lead per serving, roughly 93% of CR's level of concern, which kept it within CR's daily threshold. Retail labels list about 20 g of protein in roughly 130 calories per 33 g scoop, sweetened with monk fruit. Truvani carries a Prop 65 warning in California, per an independent report. **Bottom line:** The plant protein with the best published lead result we could find, used once a day. **Pros:** - Consumer Reports (Jan 2026): under its lead level of concern per serving, about 93% as reported - Short, organic, dairy-free ingredient list - No sucralose or stevia; monk fruit sweetened **Cons:** - Close to CR's threshold, so it leaves little room for a second daily serving - Only about 20 g of protein per scoop - Premium cost per gram of protein [Check price on Amazon](https://www.amazon.com/dp/B0DDQHJ2NG?tag=sktiger-20&linkCode=ll1) ### 6. Thorne Whey Protein Isolate **Award:** Best NSF Certified | **Type:** Whey protein isolate - **Protein / serving:** About 21 g (label) - **Calories:** About 100 - **Lead data:** NSF Certified for Sport; no public lead figure - **Best for:** Tested athletes Thorne's whey isolate carries NSF Certified for Sport status, per the brand and NSF at the time of writing. NSF's certification is built on the NSF/ANSI 173 dietary supplement standard, which includes contaminant limits for heavy metals alongside label-claim checks and banned-substance screening. NSF does not publish per-product lead numbers, and its limits are less strict than Consumer Reports' level of concern. Per the label, a scoop gives about 21 g of protein in roughly 100 calories. **Bottom line:** The pick if you want an independent certifier checking contaminants on every lot. **Pros:** - NSF Certified for Sport, which includes heavy-metal contaminant limits (verify the flavor in NSF's database) - Whey isolate base, which tends to test lower for lead than plant protein - About 21 g of protein in roughly 100 calories per the label **Cons:** - No published per-product lead figure from Consumer Reports or the Clean Label Project that we could find - Premium cost per gram of protein - NSF limits are looser than CR's 0.5 microgram level of concern [Check price on Amazon](https://www.amazon.com/dp/B07978MBRM?tag=sktiger-20&linkCode=ll1) ### 7. Transparent Labs 100% Grass-Fed Whey Protein Isolate **Award:** Best for Published Lot Testing | **Type:** Grass-fed whey protein isolate - **Protein / serving:** 28 g (brand) - **Calories:** About 120-150 - **Lead data:** Brand lot CoAs (self-reported) - **Best for:** Batch-checkers Transparent Labs says it runs finished-product testing on every production lot for heavy metals and microbial safety and provides certificates of analysis, per its own site at the time of writing. That lets you check the batch you actually own rather than rely on a one-off magazine test. Per the brand, a scoop gives 28 g of protein in roughly 120 to 150 calories depending on flavor. Consumer Reports' 2025 testing covered the brand's Mass Gainer, not this isolate. **Bottom line:** The best choice for buyers who want lot-level paperwork, not just a reputation. **Pros:** - Brand states every lot is tested for heavy metals, with CoAs available - 28 g of protein per scoop, per the brand - Informed Choice and Informed Protein certified, per the brand **Cons:** - Brand CoAs are self-reported; this isolate has no independent public lead figure we could find - Premium cost per gram of protein - You need to request or look up the CoA yourself for each lot [Check price on Amazon](https://www.amazon.com/dp/B0CQ32D39X?tag=sktiger-20&linkCode=ll1) ## 3. Protein Powder and Lead: What the Published Tests Found Three independent groups have published heavy-metal results for protein powders, and they agree on the broad pattern even though their methods and thresholds differ. All three are worth knowing, because headlines about lead in protein powder usually trace back to one of them, and the details matter more than the headline. ### Consumer Reports, October 2025 Consumer Reports tested 23 protein powders and ready-to-drink shakes, buying two to four lots of each from retailers over three months and testing for lead, cadmium and arsenic. It judged lead against a daily level of concern of 0.5 micrograms, taken from California's Prop 65 safe-harbor level, and reported that more than two-thirds of the products exceeded that in a single serving. CR advised avoiding two: Naked Nutrition's Vegan Mass Gainer, at about 1,572% of its level of concern, and Huel Black Edition, at about 1,288%. It suggested limiting Garden of Life Sport Organic Plant-Based Protein (about 564%) and Momentous 100% Plant Protein (about 476%, which Momentous told CR is discontinued) to roughly once a week. CR's better choices for daily use were Owyn Pro Elite shake, Transparent Labs Mass Gainer, Optimum Nutrition Gold Standard 100% Whey, BSN Syntha-6, Momentous Whey Protein Isolate (which Momentous told CR is discontinued in the tested form), Dymatize Super Mass Gainer and MuscleTech 100% Mass Gainer, the last with no lead detected. CR reported that plant-based products averaged about nine times more lead than dairy-based ones and about twice as much as beef-based ones. ### Consumer Reports, January 2026 follow-up After readers asked about other brands, CR tested five chocolate powders: Clean Simple Eats, Equate, Premier Protein, Ritual and Truvani. As reported in coverage of the results, all five were low on lead, ranging from about 0.21 micrograms per serving for Clean Simple Eats to about 0.53 micrograms for Ritual, which was the only one slightly over CR's level of concern. ### Clean Label Project, January 2025 The Clean Label Project, a nonprofit, published a report covering 160 protein products from 70 brands. It reported that plant-based powders had roughly three times more lead than whey-based ones, that chocolate powders had about four times more lead than vanilla, and that 47% of products exceeded Prop 65's lead threshold. Industry groups including the Council for Responsible Nutrition criticized the report for not fully disclosing its thresholds and product-level results, so treat its averages as a pattern rather than a ranking. Consumer Reports had also tested protein drinks back in 2010, finding measurable heavy metals across the products, and ConsumerLab publishes subscriber-only protein powder reviews that include heavy-metal testing. ## 4. Plant vs Whey: Why Plant Protein Tests Higher Every published test points the same way: plant-based protein powders carry more lead and cadmium on average than dairy proteins. The reason is biology, not brand quality. Plants pull minerals out of the soil as they grow, including heavy metals where soils contain them, and rice in particular is known for taking up arsenic and cadmium. Concentrating peas, rice or seeds into an 80 percent protein isolate concentrates whatever metals came along with the protein. Dairy proteins sit one step further from the soil. Cows eat plants, but very little of the lead they take in ends up in milk, so whey and casein start from a cleaner base. That is why whey isolates and dairy blends dominate CR's better-choices list and why its plant powders averaged roughly nine times more lead than dairy. It does not mean every plant powder is high or every whey is low; Truvani's 2026 result shows a plant powder can test under CR's threshold. Flavor matters almost as much as protein source. Cocoa is one of the most consistently lead- and cadmium-rich ingredients in the food supply, because cacao beans pick up metals from soil and from dust during drying. The Clean Label Project's 2025 report found chocolate powders averaged about four times the lead of vanilla. If you want the lowest-metal version of a powder you already like, switching from chocolate to vanilla or unflavored is often the single easiest change. Plant protein still has a place for people who avoid dairy. Choose a brand with published results, prefer pea over rice-heavy blends, pick vanilla or unflavored, and avoid stacking several plant servings a day. Our [whey vs plant protein](https://www.best-proteinpowder.com/whey-vs-plant-protein/) comparison covers the other trade-offs, and our [best plant-based protein powder](https://www.best-proteinpowder.com/best-plant-based-protein-powder/) guide covers the wider category. ## 5. Does Orgain Protein Powder Have Lead? Orgain is one of the most searched brands in this space, so it is worth answering directly with the published data. In its October 2025 testing, Consumer Reports measured Orgain Organic Plant-Based Protein Powder in Vanilla Bean at about 143% of its daily lead level of concern per serving. CR put it in the group it considered okay to have occasionally, at up to about four to five servings a week, rather than in its avoid or once-a-week groups. Orgain has said its products are safe to consume. In a July 2026 statement to USA Today, reported in coverage of a class action filed against Costco, the company said trace environmental substances can occur in plant-based ingredients and that its products comply with applicable food safety standards. That lawsuit, filed on July 7, 2026, in federal court in Washington State, makes allegations about heavy metals in Orgain powders; allegations in a complaint are not findings, and we are not aware of a ruling. So the accurate answer is that Orgain's flagship plant powder does contain measurable lead, as most plant powders do, at a level above CR's very cautious daily threshold but well below the products CR told people to avoid. That result covers one product and flavor across the lots CR bought. Orgain also sells a grass-fed whey powder, which CR did not test in the 2025 investigation. Our [Orgain protein powder review](https://www.best-proteinpowder.com/orgain-protein-powder-review/) covers the full range and how to fit the plant tub into a week. ## 6. What Prop 65 Warnings Actually Mean California's Proposition 65, approved by voters in 1986, requires businesses to warn people about exposures to chemicals the state lists as causing cancer or reproductive harm. For lead, the reproductive-harm safe-harbor level, called the maximum allowable dose level, is 0.5 micrograms per day, and the cancer safe-harbor level is 15 micrograms per day. Those numbers are set with large safety margins, so a single serving of many ordinary foods can cross them. A Prop 65 warning means a company believes exposure may exceed that cautious threshold, or decided to warn rather than test and argue the point. Because warnings carry little cost and lawsuits under Prop 65 can be expensive, some companies label defensively. A warning is not a finding that a product is dangerous at normal use, and a missing warning is not proof that a product is clean, especially for products not sold in California. Consumer Reports used the same 0.5 microgram figure as its daily level of concern, which is why its percentages and Prop 65 line up conceptually. CR has noted that its results are not Prop 65 compliance judgments; it simply borrowed a conservative benchmark. For context, the FDA's interim reference levels for lead from food are 2.2 micrograms a day for young children and 8.8 micrograms a day for women of childbearing age, and the FDA says no level of lead exposure is known to be safe for children. There is no federal limit specific to protein powder. > **Lead Benchmarks by the Numbers** > > - **0.5 mcg**: Prop 65 reproductive limit and CR's daily level of concern > - **15 mcg**: Prop 65 cancer safe-harbor level per day > - **2.2 mcg**: FDA interim reference level, young children > - **8.8 mcg**: FDA interim reference level, women of childbearing age ## 7. How to Check Any Protein Powder for Heavy Metals First, look for the product in a published test, and match the exact product and flavor. A good result for a brand's whey says nothing about the same brand's plant powder or mass gainer, and a chocolate result may not apply to vanilla. Note the year, because formulas and suppliers change: Vega told CR its tested powder has since been renamed and its pea sourcing changed. Second, ask for a certificate of analysis. A CoA is a lab report for a specific lot, and reputable brands will share one for the lot number printed on your tub, listing lead, cadmium, arsenic and mercury in micrograms per serving or parts per million. Check that the lab is independent and the date is recent. A brand that will not share a CoA, or only shares one with no numbers, is telling you something. Third, understand what certifications cover. NSF Certified for Sport is built on the NSF/ANSI 173 standard, which includes heavy-metal contaminant limits, but those limits are looser than CR's level of concern: Garden of Life Sport's plant powder is NSF certified, per the brand, yet measured about 564% of CR's level. Informed Choice and Informed Sport focus on banned substances. The Clean Label Project's certification is about contaminants specifically; check its site for the exact product. Finally, manage dose. CR assumed one serving a day; two servings double the exposure. Rotating between a dairy powder and whole-food protein, and keeping plant or chocolate powders to one serving, keeps total intake down. Pregnant people, children and anyone with kidney disease should talk to a doctor or registered dietitian before relying on protein powder. Our [is protein powder safe](https://www.best-proteinpowder.com/is-protein-powder-safe/) guide covers the other risks, and our [best clean protein powder](https://www.best-proteinpowder.com/best-clean-protein-powder/) guide ranks short-label options. ## 8. How We Picked Every product here had to have a published, citable basis for a low heavy-metal claim: an independent test result from Consumer Reports, a contaminant-inclusive certification from NSF, or lot-level testing the brand documents. We name the source and year for each, and we did not run any lab tests of our own. Within that pool we ranked on the strength of the evidence first, then protein per serving, ingredients and cost per gram. We excluded products CR placed in its avoid or limit groups, and we left out powders with no public test data at all, however clean their marketing sounds. ## 9. Common Mistakes to Avoid ### Assuming any powder is heavy-metal free Lead and cadmium occur naturally in soil, so trace amounts appear in nearly every food. Look for powders with published low results, not claims of zero. A brand promising no heavy metals at all is overstating what testing can show. ### Treating one test as a permanent verdict Consumer Reports and the Clean Label Project tested specific products, flavors and lots at a point in time. Formulas, suppliers and harvests change. Match the exact product and flavor, note the year, and ask for a recent certificate of analysis. ### Defaulting to chocolate plant protein The Clean Label Project's 2025 report found chocolate averaged about four times the lead of vanilla, and plant powders roughly three times whey. Chocolate plant protein combines both risks. Vanilla or unflavored dairy is the lowest-risk default. ### Reading a Prop 65 warning as proof of danger Prop 65's 0.5 microgram lead threshold is deliberately cautious, and some companies warn defensively. A warning is a prompt to look for test data, not proof a product is unsafe, and a missing warning does not prove it is clean. ### Ignoring how many servings you take Consumer Reports' percentages assume one serving a day. Two shakes double your exposure, and adding a plant-based bar or chocolate snack adds more. Count servings across the day, especially for higher-testing plant or chocolate powders. ## 10. Frequently Asked Questions ### What is the best protein powder without heavy metals? No powder is completely free of heavy metals, but some have published low results. In Consumer Reports' October 2025 testing, Optimum Nutrition Gold Standard 100% Whey and BSN Syntha-6 were among its better choices for daily use. In its January 2026 follow-up, Clean Simple Eats chocolate had the lowest lead of five powders tested, as reported in coverage. ### Is there lead in protein powder? Most protein powders contain trace lead because it is present in soil and water. Consumer Reports' October 2025 investigation found more than two-thirds of 23 products exceeded its 0.5 microgram daily level of concern in one serving. Dairy-based powders tested lowest; plant-based products averaged about nine times more lead than dairy, per CR. ### What is the best protein powder without lead? No product can promise zero lead, but CR's October 2025 testing found no detectable lead in MuscleTech 100% Mass Gainer and low levels in Optimum Nutrition Gold Standard 100% Whey, BSN Syntha-6. For everyday use, a vanilla or unflavored whey with published results or lot-level certificates of analysis is the safest choice. ### Does Orgain protein powder have lead? Consumer Reports measured Orgain Organic Plant-Based Protein Powder in Vanilla Bean at about 143% of its daily lead level of concern per serving in October 2025, and rated it okay to have occasionally, at about four to five servings a week. Orgain has said its products are safe and comply with food safety standards. CR did not test Orgain's whey powder. ### Is whey or plant protein lower in heavy metals? Whey and other dairy proteins consistently test lower. Consumer Reports found plant-based powders averaged about nine times more lead than dairy-based ones in 2025, and the Clean Label Project's 2025 report found plant powders had roughly three times more lead than whey. Plants absorb metals from soil, and isolating the protein concentrates them. ### What does a Prop 65 warning on protein powder mean? It means the company believes a serving may exceed California's very cautious safe-harbor level, which for lead's reproductive effects is 0.5 micrograms a day, or chose to warn rather than test. It is not a finding that the product is dangerous at normal use. Look for published test results or a certificate of analysis instead. ### Does NSF certification mean a powder is low in lead? NSF Certified for Sport includes heavy-metal contaminant limits under the NSF/ANSI 173 standard, so it rules out grossly contaminated lots. Those limits are less strict than Consumer Reports' level of concern, though. Garden of Life Sport's plant powder is NSF certified, per the brand, yet measured about 564% of CR's level of concern in 2025. ## Related Safety and Label Guides - [Is Protein Powder Safe?](https://www.best-proteinpowder.com/is-protein-powder-safe/): Heavy metals, undeclared drugs, Prop 65 and who should be careful. - [Best Clean Protein Powder](https://www.best-proteinpowder.com/best-clean-protein-powder/): Short-label powders with the strongest third-party documentation. - [Orgain Protein Powder Review](https://www.best-proteinpowder.com/orgain-protein-powder-review/): Orgain's range read off the label, and what Consumer Reports found. ## The Bottom Line There is no heavy-metal-free protein powder, but there are powders with published results showing low lead. On the evidence through early 2026, dairy-based powders in vanilla or lightly flavored versions test lowest, and Consumer Reports' testing gives specific products to choose from. Match the exact product and flavor to a published test, ask for a recent certificate of analysis, keep plant and chocolate powders to one serving a day, and treat Prop 65 warnings as a prompt to check, not a verdict. Anyone pregnant, feeding children or managing kidney disease should talk to a doctor or registered dietitian. ## More in Safety & Labels Guides in this category that pair with what you just read. - [NSF Certified Protein Powder](https://www.best-proteinpowder.com/best-nsf-certified-protein-powder/) - [Best Protein Powder for Pregnancy](https://www.best-proteinpowder.com/best-protein-powder-for-pregnancy/) - [Best Brown Rice Protein Powder](https://www.best-proteinpowder.com/best-brown-rice-protein-powder/) - [Is Protein Powder Safe?](https://www.best-proteinpowder.com/is-protein-powder-safe/) - [Best Clean Protein Powder](https://www.best-proteinpowder.com/best-clean-protein-powder/) - [Whey vs Plant Protein](https://www.best-proteinpowder.com/whey-vs-plant-protein/) About the Author [Best Protein Powder Editorial Team](https://www.best-proteinpowder.com/authors/editorial-team/), Supplements Desk The editorial team reads the label, the certificate and the price per gram of protein before a powder gets near a ranking -- and says plainly when a cheaper tub does the same job. [Full profile](https://www.best-proteinpowder.com/authors/editorial-team/) | [How we test](https://www.best-proteinpowder.com/how-we-test/)