The AAMI standard for conventional dialysate requires the total microbial count be less than:

The AAMI standard for conventional dialysate requires the total microbial count be less than:

• A. 10 CFU/mL
• B. 1 CFU/mL
• C. 100 CFU/mL
• D. 1000 CFU/mL

Answer: (C)

Dialysate must have a very low level of live microorganisms to protect patients from inflammatory reactions during treatment. The number used is colony-forming units per milliliter (CFU/mL). For conventional dialysate, the standard allows up to 100 CFU/mL. This threshold reflects a practical balance between what is realistically achievable with standard water treatment and the need to minimize patient risk. Counts kept under 100 help reduce the chance of pyrogenic or infectious reactions, while allowing routine production without requiring ultrapure-level reductions. If testing shows 100 CFU/mL or more, corrective actions—such as improving water treatment or re-testing a new batch—are needed to bring the microbial load below the limit.

Dialysate must have a very low level of live microorganisms to protect patients from inflammatory reactions during treatment. The number used is colony-forming units per milliliter (CFU/mL). For conventional dialysate, the standard allows up to 100 CFU/mL. This threshold reflects a practical balance between what is realistically achievable with standard water treatment and the need to minimize patient risk. Counts kept under 100 help reduce the chance of pyrogenic or infectious reactions, while allowing routine production without requiring ultrapure-level reductions. If testing shows 100 CFU/mL or more, corrective actions—such as improving water treatment or re-testing a new batch—are needed to bring the microbial load below the limit.