Certifications
When the label isn’t enough, the NSF mark is
Products that carry the NSF mark have been independently evaluated and certified so what's on the label is what's in the product.
Compete with confidence
NSF Certified for Sport® helps athletes, coaches, dietitians and consumers make safer, more reliable choices when choosing sports supplements.
It’s the only independent third-party certification recognized by Major League Baseball, USADA, the iNADO, the NHL, CFL and CHL, and recommended by the NFL, NBA, PGA TOUR, LPGA and Ironman.
Truth in every label
NSF Contents Certified ensures that health and wellness products are labeled accurately, are screened for harmful contaminants and meet strict safety and quality standards.
You’ll find the Contents Certified mark on products that most directly impact your health including supplements, functional foods and beverages, and sports nutrition.
More than skin deep
NSF Content and Claims Certified ensures beauty and personal care products are accurately labeled, with ingredient claims independently verified for truth and accuracy.
This certification applies to products you use on your body every day, think skincare and haircare, where trust in ingredients is essential.
Which certification is right for you?
| Certification | NSF Certified for Sport® | NSF Contents Certified | NSF Contents and Claims Certified |
|---|---|---|---|
| Best for |
Athletes and drug-tested professionals
|
Supplement and active nutrition users
|
Beauty and personal care users
|
| Level of certification |
Enhanced
|
Foundational
|
Foundational
|
| Designed for drug tested environments |
Yes
|
No
|
No
|
| Required in MLB® clubhouses |
Yes
|
No
|
No
|
| Banned substance tested |
Yes (300+)
|
No
|
No
|
| Masking agent screened |
Yes
|
No
|
No
|
| Contaminants screened |
Yes (athlete-level)
|
Yes (risk-based)
|
Yes (microbial, chemical, stability-related)
|
| Label Accuracy (Facts Panel) |
Verified
|
Verified
|
Verified*
|
| Ingredient Amounts Verified |
Yes
|
Yes
|
Yes
|
| Finished product tested |
Yes (tested for real-world athlete risk)
|
Label accuracy focus (contents vs. label)
|
Yes (full formula, stability and interactions)
|
| Ongoing testing and oversight |
Annual facility audits; ongoing batch-level monitoring and review of consumer safety concerns
|
Annual facility audits and annual product retesting
|
Annual facility audits, annual product retesting and stability review
|
*Only OTC products include a Drug Facts panel
FAQs
NSF is an independent, non-profit organization that helps protect human health by developing standards and providing third-party certification for products across nutrition, wellness, consumer goods, and health sciences.
NSF certifications are:
- Independent and accredited.
- Based on recognized scientific and regulatory standards.
- Supported by ongoing product testing and audit of manufacturing facilities.
- Designed to help consumers make informed, confident choices when selecting certified dietary supplements, active nutrition and personal care products.
NSF does not manufacture or sell consumer products, and certification decisions are made independently of brands.
When a product is NSF Certified, it means the product has been independently evaluated against a defined NSF certification standard.
Depending on the certification program, this may include:
- Verification that ingredient labels and claims are accurate.
- Testing for certain contaminants or undeclared substances.
- Review of Good Manufacturing Practices (GMPs).
- Ongoing oversight and compliance monitoring – annual testing; not one-time testing.
The specific meaning depends on which NSF certification the product has earned.
GMP stands for Good Manufacturing Practices. GMP certification verifies that products are manufactured following standardized procedures under controlled conditions designed to reduce risks such as contamination and inconsistent quality.
NSF GMP Certification focuses on how products are made, rather than the product’s ingredient contents alone.
NSF product certifications require that products are manufactured in facilities that comply with verified GMP standards. This helps support consistent quality and reduces manufacturing-related risks.
“Third-party tested” is a broad, unregulated term that may refer to limited or one-time testing.
NSF Certification goes further by including:
- Testing to a defined certification standard
- Verification of ingredient integrity and supplement label accuracy
- GMP audit of the manufacturing facility
- Ongoing oversight and monitoring; annual testing
Not all third-party testing programs provide the same level of rigor, transparency, or continued monitoring.
NSF certifications help protect consumers from risks such as:
- Inaccurate or misleading labels.
- Undeclared or potentially harmful substances.
- Certain contaminants that may impact health.
- Poor or inconsistent manufacturing practices.
Each NSF certification is designed to address risks relevant to how a product is used, whether it’s ingested, applied to the skin, or used by athletes.
No. NSF offers different certifications for different product categories and consumer needs, including:
- NSF Contents Certified® – for dietary supplements (NSF/ANSI 173) and active nutrition (NSF 229 – functional foods and beverages)
- NSF Contents & Claims Certified® (NSF/ANSI 527) – for topical OTC (over-the-counter), personal care, cosmetic and beauty products
- NSF Certified for Sport® (NSF 306) – for athletes concerned about ingredient contents and quality, plus banned substances in dietary supplements, active nutrition, personal care and beauty.
- NSF GMP Certification (NSF/ANSI 455) – for manufacturing facilities of dietary supplements, active nutrition (functional foods and beverages), personal care and beauty products.
Each certification serves a different purpose and has its own evaluation requirements.
Look for the NSF certification mark on product labels or packaging. Each mark corresponds to a specific NSF certification and signals independent verification appropriate to that product category.
Consumers may see the NSF mark on more than just Nutrition & Wellness products. In addition to dietary supplements and sports nutrition products used by everyday consumers and athletes, NSF also certifies food and beverage products and water filters and drinking water systems.
For foods, NSF certification often verifies specific product claims, such as NSF Gluten Free, NSF Vegan, and NSF Cage Free. Across water, food, and nutrition, the NSF mark signals independent certification for safety, quality, and credibility.