Certificates of Analysis

Best 365 Labs sources USP grade Methylene Blue. Final products meet USP standards.

United States Pharmacopeia (USP) Limit for Nutritional Supplements

Lead 10 ppm

Arsenic 3 ppm

Cadmium 3 ppm

Mercury 3 ppm

If your label recommends one single daily dose of 500mg, the PPM in your product cannot be higher than:

Lead = 0.900 ppm

Arsenic = 20.000 ppm

Cadmium = 8.200 ppm

Mercury = 0.600 ppm