Protein powder contamination: regulation and COA checks

FDA explains that arsenic, lead, cadmium, and mercury can occur naturally in the environment and can be higher because of past industrial uses and pollution. FDA environmental contaminants in food

Consumer Reports published testing in 2025 of 23 protein powders and ready-to-drink shakes and reported that more than two-thirds exceeded CR's daily lead level of concern in a single serving. Plant-based products generally showed higher lead levels than dairy-based products in that dated test set. Consumer Reports protein powder lead testing

Dietary supplements are not reviewed like prescription drugs before sale. FDA says it does not approve supplements for safety and effectiveness before they reach the public, and its regulatory role usually starts after a product enters the marketplace. FDA 101 dietary supplements

FDA can inspect manufacturing facilities, review labels and claims, monitor adverse-event reports, and take action when a product is unsafe or otherwise violates the law. FDA 101 dietary supplements

FDA also says it has limited resources to analyze dietary supplements and does not test supplements before they are sold to consumers. For buyers, that makes brand-level testing disclosure more important, not less. FDA questions and answers on dietary supplements

The official portal still labels SB 1033 active, but it shows no action after the May 14, 2026 committee hold, one day before the May 15 fiscal-committee deadline. The bill is not enacted law. California Legislative Information SB 1033 status California Senate 2026 legislative calendar

The current bill text defines heavy metals as arsenic, cadmium, lead, and mercury. It would cover protein products with at least 5 g protein per serving and would require representative lot testing starting January 1, 2028, if enacted. California Legislative Information SB 1033 bill text

The buyer-useful part is disclosure. The current text would require brand owners to make the name and level of each heavy metal present in each tested lot publicly available, along with Supplement Facts information, without requiring a UPC, lot number, or proof of purchase. California Legislative Information SB 1033 bill text

For the detailed bill walk-through, read the SB 1033 protein heavy-metals guide.

On June 8, 2026, the Texas attorney general announced an industry-wide investigation into protein powder manufacturers over heavy-metal and product-safety representations. The announcement describes an investigation, not an adjudicated violation. Texas attorney general protein-powder investigation

For unit conversion, use the COA heavy-metals interpreter. It does not declare a product safe or unsafe. It helps turn lab units into serving-size context.

This is where a general buyer article should slow down. NIH's Office of Dietary Supplements says to be cautious with dietary supplements beyond a standard prenatal supplement if pregnant or nursing, and to be careful about giving supplements to a child unless recommended by the child's health care provider. NIH ODS dietary supplements consumer fact sheet

NCCIH gives the same basic warning for children and teens: many dietary supplements have not been tested in children, and some products marketed for bodybuilding or weight loss have contained harmful ingredients. NCCIH dietary supplements for children and teens

Lead deserves extra caution around kids. CDC says no safe level of lead in children has been identified and that even low levels in blood can negatively affect a child's health. CDC testing for lead poisoning in children

The practical NutriScore read: do not treat a normal protein powder as a prenatal product, pediatric product, or medical nutrition product just because it has protein. That call belongs with a qualified health care professional who knows the person, the diet, and the reason for using it. FDA 101 dietary supplements NIH ODS dietary supplements consumer fact sheet

For a daily-use powder, require product-specific contaminant numbers before trusting the label.

Keep reading with the protein scoop math guide, the lead in greens powder guide, and the concentrated greens heavy-metals explainer.