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NSF Certified for Sport explained

The banned-substance gold standard

If you compete in a drug-tested sport — NCAA, NFL, MLB, NBA, USA Track & Field, MLS, USA Swimming, anything under the WADA Code — and you take a supplement, the only certification that matters for protecting your eligibility is NSF Certified for Sport.

What it tests for

Every NSF Certified for Sport product is tested batch-by-batch for:

Who requires it

What "NSF Certified" alone is not

NSF Certified (no "for Sport") tests the product against the same identity/potency/contaminant standards but does not include the banned-substance screen. For an athlete, NSF Certified alone is not enough — only NSF Certified for Sport carries the banned-substance guarantee.

Brands that carry it

As of this writing, 287 brands and over 2,300 individual products carry the NSF Certified for Sport seal. Recognizable names include:

See the full list at /brands/ — every NSF Sport-certified brand we index gets its own page with the cert count and latest test date.

How to verify a specific bottle

The seal on the bottle is the first signal. The certificate published by NSF is the second. ScanCheck pulls the published cert directly: open the app, point the camera at the label, and see in three seconds whether the bottle in your hand has a real cert behind it.

Frequently asked

Is NSF Certified for Sport the same as USADA approval?
No. USADA does not approve supplements — they enforce anti-doping rules. NSF Certified for Sport is recommended by USADA but the certification itself is run by NSF International.
Does NSF Certified for Sport test every batch?
Yes. Each new manufacturing batch is screened before the product can be sold under the seal.
Can a non-athlete benefit from NSF Certified for Sport supplements?
Yes. The banned-substance screen is also useful for parents buying for kids, people on medical drug tests, and anyone who wants the strictest available verification.
How much does NSF charge brands?
Multi-thousand dollars per product per year, plus annual facility audits. The barrier is part of what makes the cert meaningful.