Safety and testing hub
Supplement safety and testing guides
A crawlable cluster for heavy-metal questions, COA literacy, certification checks, allergen warnings, regulation context, and supplement labels that deserve a slower read.
Last reviewed: 2026-06-28
Start with contamination
Protein powder contamination and regulation
Use this first when the safety question is heavy metals, COAs, pregnancy or kids caution, supplement regulation, or public disclosure.
Useful tool
COA heavy metals interpreter
Convert lab report numbers locally and compare unit context without sending user-entered values to analytics.
Open COA toolSource context for safety checks
This cluster keeps readers close to existing source-backed guides and the regulator/testing references used across safety articles:
Read the cluster
Article guides
Protein safety guide
Heavy metalsProtein powder contamination and regulation: what buyers should check
A practical guide to protein powder heavy metals, COA literacy, pregnancy and kids caution, and the SB 1033 regulation story.
Last reviewed: 2026-06-04
Lead guide
Lead testingHow much lead is in your greens powder? What tests show
A buyer-focused read of public lead testing, Prop 65, FDA reference levels, ConsumerLab notices, and what a useful COA should show.
Last reviewed: 2026-06-03
Contamination guide
COA contextWhy greens powders can carry more heavy metals than vegetables
The water-removal math behind concentrated plant powders, heavy-metal testing, and why a buyer-useful COA needs serving-size numbers.
Last reviewed: 2026-06-03
Regulation guide
RegulationCalifornia SB 1033 explained: the protein powder heavy-metal bill
A plain-English read of California's proposed protein-product heavy-metal testing bill, current status, public disclosure rules, and buyer impact.
Last reviewed: 2026-06-04
Testing guide
CertificationNSF Certified for Sport vs Informed Sport: what badges mean
A practical guide to sport supplement certification badges, vague third-party testing claims, and what a missing badge does or does not tell you.
Last reviewed: 2026-06-03
Protein safety guide
Buyer safetyIs protein powder good for you? The useful answer before you buy
A buyer-first read on protein powder usefulness, heavy-metal concerns, testing signals, allergens, serving math, and label checks.
Last reviewed: 2026-06-14
Greens guide
Food contextDo greens powders replace vegetables? The label answer
A practical answer to whether greens powders count as vegetables, with fiber, serving size, Supplement Facts, and testing checks.
Last reviewed: 2026-06-22
Safety label guide
AllergensAllergen and cross-contamination warnings: how to read the small print
A safety-first look at allergen statements, precautionary labels, and what warning text can and cannot replace clinician guidance.
Last reviewed: 2026-06-03
Quality verification guide
Lot numbersBatch testing and lot numbers explained: what a COA can still miss
A practical guide to lot numbers, COA language, and why batch-level claims need specifics to stay meaningful.
Last reviewed: 2026-06-03
Certification guide
Badge scopeCertification badge checklist: what quality logos can and cannot prove
A practical guide to NSF, USP, COA, and third-party testing language so badges do not replace label transparency.
Last reviewed: 2026-06-03
Safety guide
Risk guideShilajit supplements: benefits, risks, and quality checks
A conservative shilajit supplement guide focused on purification, heavy-metal concerns, standardization, testosterone and vitality claims, and label quality.
Last reviewed: 2026-06-03
How to use this cluster
Start with contamination articles when the question is lead, heavy metals, COAs, or testing numbers.
Use the certification and batch-testing guides when a brand relies on badges, lot numbers, or third-party testing language.
Use allergen and supplement-safety guides when the label involves sensitive users, warnings, or cautious use boundaries.