NSF International
Ann Arbor, Michigan
Profile updated: March 13, 2026
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.
Min. Order
Not publicly disclosed
Lead Time
Not publicly disclosed
Product Types
Label Accuracy Testing, Contaminant Screening, Banned Substance Testing, Microbial Testing, Heavy Metals, Pesticide Testing
Capabilities
Product Certification (NSF/ANSI 173), Certified for Sport Testing, GMP Facility Audits, Ingredient Certification, International Testing (Shanghai Lab)
Certifications
0 of 2 certifications independently confirmed. What this means
Key Regulatory Concepts
Dietary supplement manufacturers must comply with 21 CFR Part 111 (Current Good Manufacturing Practice for dietary supplements). This includes requirements for personnel, facilities, equipment, production, laboratory operations, and record-keeping.
Review Notes
A not-for-profit organization better known for setting standards and certifying products than for standalone testing services. Testing is typically bundled with certification programs rather than offered as a standalone service.
Sources
- NSF Supplement Testing Services(2026-03-13)
- NSF Product and Ingredient Certification(2026-03-13)
- NSF Certified for Sport(2026-03-13)
Disclosures
- No material connection exists between Inventory Ready and this organization
- NSF International is a not-for-profit organization
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