Description |
The USP <2022> test is performed to determine the presence or absence of a specified list of microorganisms within nutritional and dietary supplements: Clostridium species, Escherichia coli, Salmonella species, and/or Staphylococcus aureus. As compared to USP <2021>, the sample is first enriched and then streaked onto the appropriate selective agar based upon the organism (s) above. |