TESTING LABS
NSF International
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.
Ann Arbor, Michigan
Directory Listing · Records Reviewed
Public records and independent sources have been reviewed.
What this means →- MOQMOQ (Minimum Order Quantity)The smallest production run a manufacturer will accept for an order.
- Not publicly disclosed
- LEAD TIMELead TimeThe time from order placement to finished product delivery.
- Not publicly disclosed
§1Editorial assessment
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.
§2Six-gate readout
Six gates we apply before any name appears in the directory. Each gate is auto-derived from public evidence on this profile.
§3Inspection history
§4Certifications
0 of 2 certifications independently confirmed. What this means
§5Capability matrix
- 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)
§6Sources
- NSF Supplement Testing Services(2026-03-13)
- NSF Product and Ingredient Certification(2026-03-13)
- NSF Certified for Sport(2026-03-13)
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.
Disclosures
- No material connection exists between Inventory Ready and this organization
- NSF International is a not-for-profit organization
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