“USP grade” refers to the United States Pharmacopeia — a standards-setting organization that publishes monographs defining the identity, strength, quality, and purity a material must meet. When something is labeled USP grade, it has been made and tested to those published specifications.
What USP-grade certification implies
- The material meets the USP monograph specifications for its identity and purity.
- It is verified against defined limits for contaminants and heavy metals.
- It is produced under documented, controlled quality processes.
BioPure's 2% Methylene Blue solution is USP-grade certified, free from contaminants and heavy metals, and manufactured in a GMP, USP, FDA facility under strict quality controls. It is proudly made in Canada.
Informational only
This article explains a quality standard. It is not medical advice. Appropriate use is governed by the product labeling and applicable professional guidance.

