Third-Party Tested Supplement Manufacturers
12 makers listed — 8 with documented proof
Third-party testing is how a brand proves a finished batch matches its label. These makers publish batch Certificates of Analysis or test finished product through an ISO 17025-accredited lab rather than only their own in-house checks.
Directory listing last reviewed September 2026. New brand? Start with low-MOQ makers before requesting quotes.
Why third-party tested matters
Independent batch testing catches what in-house QC cannot: heavy metals, microbial contamination, potency drift, and label claims that do not match contents. It is the strongest per-batch evidence a brand can hold, and increasingly a retailer requirement.
What to verify
Ask for a recent Certificate of Analysis for a finished batch, not an ingredient spec sheet — and confirm the testing lab is ISO 17025 accredited (check the lab's own accreditation, not a badge on the maker's site). Confirm which tests run per batch: potency, heavy metals, microbiology, and allergen screens are not all equal.
8 makers with registry or documented proof
These listings trace to an independent registry entry or a certificate published on the maker's own site. How we grade evidence.
Gummi World
Arizona, USA • Specialist
F.A.M.E. Health Labs
Georgia, USA • Full-Service
Intermountain Nutrition
Utah, USA • Full-Service
Superior Supplement Manufacturing
California, USA • Full-Service
Jinher Nutra
California, USA • Contract Manufacturer
VitaCare Pharma
New Jersey, USA • Contract Manufacturer
Wasatch Product Development, LLC
Utah, USA • Contract Manufacturer
We Make Vitamins
Florida, USA • Private Label
4 makers claiming Third-Party Tested without a document we could confirm
A claim is not a disqualifier — registries are hard to search and legal names rarely match exactly. But it is the gap you should close first. Send proof links and the listing upgrades.
Kelker Pharma
California, USA • Contract Manufacturer
Organic Supplement Manufacturing
Wisconsin, USA • Full-Service
Pharmvista Gummy LLC
New Jersey, USA • Specialist
CPack Manufacturing
Utah, USA • Full-Service