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:
- Identity + potency - the label claim matches what is in the bottle
- Heavy metals - lead, arsenic, mercury, cadmium below safe thresholds
- Banned substances - ~280 substances on the WADA Prohibited List, plus the NFL and MLB lists
- Facility audit - the manufacturing site is inspected at least annually
Who requires it
- NFL - only NSF Certified for Sport supplements may appear in team facilities
- MLB - same requirement for all 30 clubhouses
- NCAA - listed as the gold-standard recommendation; most programs treat it as required
- USA Triathlon, USA Swimming, USA Track & Field - actively recommended
- PGA Tour - required for clubhouse availability
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.
How big is the program? Live numbers
ScanCheck's live index currently holds 2,517 public NSF Certified for Sport certificates - the single largest program in our 20,407-certificate public record. Every one of them is browsable at /labs/nsf-certified-for-sport/, and the program's share of the whole testing landscape is charted in The ScanCheck Index.
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:
- Athletic Greens / AG1
- Thorne
- Momentous
- Gatorade
- Klean Athlete
- Vega
- Transparent Labs
- 1st Phorm
- Bare Performance Nutrition
- Designs for Sport
- BioSteel
- CELSIUS
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.