Protein Powders Tested for Lead and Heavy Metals: How to Pick a Cleaner One
Protein Powders and Heavy Metals: How to Pick a Cleaner One
In October 2025, Consumer Reports found that more than two-thirds of the 23 protein powders and shakes it tested exceeded its level of concern for lead in a single serving. If you use protein powder every day, that’s worth paying attention to.
Why protein powder is a concern
Heavy metals like lead can come from the soil the ingredients grow in. Plant proteins such as rice and pea are often discussed in this context, but the only way to know about a specific product is testing.
What third-party certification tells you
NSF Certified for Sport and NSF/ANSI 173 certification mean an independent program tests a product against its label and checks for certain contaminants. A seal doesn’t promise that every batch is perfect, but it’s a much stronger signal than a brand’s own marketing.
How to choose
- Look for a certification seal, then confirm it on the certifier’s own website.
- Ask for a batch lab report (COA) if the brand doesn’t have certification. Good brands publish them.
- Rotate your protein sources, so no single product makes up all of your daily intake.
- Don’t overdo the scoops. More servings means more exposure.
Brands with NSF certification
Our list includes NSF-certified protein from Optimum Nutrition, Transparent Labs, Momentous, Legion, Garden of Life, and Vega. Certification and lead testing aren’t the same thing, though. Consumer Reports advised limiting two NSF-certified plant proteins, Garden of Life Sport Organic Plant-Based and Momentous 100% Plant Protein, to once a week. Check Consumer Reports’ published results for your exact product.
This article is for education, not medical advice. These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease. We may earn a commission from links on this site.
