USP<2021> and USP<2022> Testing
Ensuring Safety for Nutritional and Dietary Supplements
Leigh Labs is an experienced provider of standardized microbiological testing methods used to evaluate nutritional and dietary supplements from raw materials to finished products:
- USP <2021> (Microbial Enumeration Tests): A quantitative test that measures the Total Aerobic Microbial Count (TAMC), Total Yeast and Mold Count (TYMC), and Enterobacterial Count (bile-tolerant Gram-negative bacteria) via membrane filtration, plate counts, or multiple-tube (MPN) methods.
- USP <2022> (Microbiological Procedures for Absence of Specified Microorganisms): A qualitative screening test that checks for the presence or absence of specific pathogens and objectionable organisms, such as Escherichia coli, Salmonella species, Staphylococcus aureus, Clostridium species, and Pseudomonas aeruginosa.
