Clean Form Nutrition Earns NSF Certified for Sport for Product Made With NNB’s Pürest Creatine

NNB Nutrition says Clean Form Nutrition has become the first brand to earn NSF Certified for Sport certification for a finished product containing NNB’s Pürest Creatine ingredient.¹ The announcement, dated October 13, 2026, follows the ingredient’s recent Informed Choice certification and impurity testing by Eurofins and Mérieux NutriSciences, according to the company.

What Does NSF Certified for Sport Cover?

NSF, an independent standards and certification body, runs the Certified for Sport program, which the release says tests finished products for substances prohibited by major sports organizations. The program also checks products against applicable manufacturing quality and labeling requirements.

NNB notes that creatine itself is permitted in competitive sport. The company says, however, that impurities or prohibited substances can be introduced through cross-contamination during manufacturing, blending, packaging, or handling, which is why it considers independent verification relevant for athletes subject to drug testing.

What Did the Impurity Testing Show?

As explained in the release, Eurofins tested three production lots of Pürest Creatine side by side with a premium creatine that NNB describes as a leading product. The release says dicyandiamide (DCD), dihydrotriazine (DHT), and creatinine fell below the laboratory’s limits of quantification in every Pürest lot. The comparison sample had measurable amounts of DCD and creatinine, but like Pürest, its DHT level was below the limit of quantification. The release does not provide numerical results or name the comparison product.

What Other Certifications Does the Ingredient Hold?

NNB says Pürest Creatine recently received Informed Choice certification, an ingredient-level program that screens for substances prohibited in sport. The company groups its quality measures into four layers: Eurofins analysis, Mérieux NutriSciences testing, Informed Choice certification, and NSF Certified for Sport certification of the finished product. NNB says these address two separate priorities: minimizing manufacturing impurities and reducing the risk of prohibited-substance contamination.

What Does NNB’s Website Say About the Ingredient?

NNB’s product page says Pürest Creatine tests “among the lowest in the global market” for DCD, DHT, creatinine, and cyanide.² The page also says heavy metals are screened, certificates of analysis are available for every lot, and the ingredient is vegan, allergen-free, and non-GMO. It describes “gentle processing” intended to limit contaminant-producing reactions and a finer powder for mixability.

According to NNB’s website, the company was established in 2015, has a factory in Anhui, China, and maintains warehouses in California and Texas.³

NNB Nutrition will be an exhibitor at SupplySide Global 2026 at Mandalay Bay in Las Vegas, October 28–30. The company will be at booth 5952.⁴

Why Does Purity Matter for Creatine Formulators?

A Nutritional Outlook FAQ published in March listed stability among creatine’s formulation challenges, noting that the ingredient can degrade into creatinine when exposed to heat, moisture, or acidic conditions.⁵ The article said testing of gummies has shown inconsistent label claims and evidence of degraded creatine, and that powders remain the most stable and widely used format.

The FAQ said the consumer base is widening beyond young male athletes to include women, older adults, and wellness-focused consumers. It added that quality assurance and third-party testing are becoming more important as scrutiny of supplement integrity grows.

References

1. NNB Nutrition. Clean Form Nutrition achieves NSF Certified for Sport certification with NNB Nutrition’s Pürest Creatine, setting a new benchmark for creatine purity. Press release. October 13, 2026. Accessed October 13, 2026.
2. NNB Nutrition. Pürest Creatine™. Accessed October 13, 2026. https://www.nnbnutrition.com/ingredients/purest-creatine/
3. NNB Nutrition. About. Accessed October 13, 2026. https://www.nnbnutrition.com/about/
4. SupplySide Global. Exhibitor list. Accessed October 13, 2026. https://www.supplysideglobal.com/expo/event-information/exhibitor-list/
5. Saraceno N. FAQ: transforming creatine from a sports staple to multi-functional ingredient. Nutritional Outlook. March 31, 2026. Accessed October 13, 2026. https://www.nutritionaloutlook.com/view/faq-transforming-creatine-sports-functional-ingredient