NSF runs several distinct certification programs that consumers and buyers often conflate. They are not interchangeable.
- NSF/ANSI 173 (Dietary Supplements Standard): Verifies that what's on the label is in the bottle (contents tested), that contaminants are below allowable limits, and that the facility holds NSF GMP registration. This is the gold-standard certification for supplement label accuracy.
- NSF Certified for Sport: Adds screening for over 280 substances banned by major sports organizations (WADA, MLB, NFL, NHL). Required if you market to athletes or sell into sports nutrition retail.
- NSF GMP Registration (Facility level): Audits the facility against NSF's GMP standards. A facility-level certification, not product-level. Required to qualify for product certification.
- NSF Standard 49 (Cosmetics): Less common in the U.S. than ISO 22716, but emerging.
The cost of NSF product certification runs $5,000-25,000 per SKU for initial certification, with annual renewals and ongoing batch surveillance. Facility-level NSF GMP registration is paid by the manufacturer, not by individual brand customers.
When a retailer requires NSF certification (Whole Foods, many sports nutrition chains, certain pharmacy retailers), they typically mean NSF Contents Certified or NSF Certified for Sport. Verify which program the retailer requires before paying for the wrong certification.