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. 2020 May 20;76(1):130–140. doi: 10.1053/j.ajkd.2020.02.441

Table 3.

Testing Thresholds for Microbial Contaminants

Contaminant Maximum Allowable Level Typical Action Level
Bacteria water and dialysate <200 CFU/mL 50 CFU/mL
Endotoxin water and dialysate <2 EU/mL 1 EU/mL

Abbreviations: EU, endotoxin unit; CFU, colony-forming unit

Information based on American National Standards Institute/Association of the Advancement of Medical Instrumentation RD52:2004 and current Centers for Medicare & Medicaid Services standards.