NSF International
Not-for-profit organization testing supplements for label accuracy, contaminants and banned substances.
- LEAD TIME
- Not publicly disclosed
Overview
NSF International is an independent, not-for-profit organization founded in 1944 in Ann Arbor, Michigan. Their dietary supplement testing division operates ISO/IEC 17025 accredited laboratories that test products against NSF/ANSI 173, the only American National Standard for dietary supplement ingredients. NSF tests for label accuracy, contaminant screening (heavy metals, pesticides, mycotoxins, microbial), and banned substances through their Certified for Sport program. NSF is widely recognized by retailers and regulators; many major retail chains require NSF GMP certification as a baseline for supplement listing. Their lab network spans North America, Europe, and China, with ingredient testing available through their Shanghai facility for brands sourcing from Asia. NSF also operates the GMP facility certification program that many contract manufacturers pursue.
Certifications
0 of 2 certifications independently confirmed. What this means
Capabilities
- PRODUCT TYPES
- Label Accuracy Testing · Contaminant Screening · Banned Substance Testing · Microbial Testing · Heavy Metals · Pesticide Testing
- CAPABILITIES
- Product certification programs · Regulatory consulting or audits
Sources
- NSF Supplement Testing Services(2026-03-13)
- NSF Product and Ingredient Certification(2026-03-13)
- NSF Certified for Sport(2026-03-13)
What we couldn't verify
We did not visit this company on site. See the limits that apply to every listing.
- NSF is primarily a certification body; testing is part of their certification programs
- Pricing and turnaround times not publicly disclosed
- Testing may be bundled with certification programs rather than available as standalone services
Dietary supplement manufacturers must comply with 21 CFR Part 111 (cGMP). What Part 111 requires
Disclosures
- NSF International is a not-for-profit organization
The connection map between NSF International and other vendors, capabilities, and certifications is in the manufacturer atlas.
Enforcement screening: included in Inventory Ready's most recent completed pass against FDA's published recall datasets (2026-07-09). Method and limits →
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