During disk diffusion susceptibility testing, the required q… | 마이메르시 MyMerci
Microbiology · 임상미생물학
문제
During disk diffusion susceptibility testing, the required quality-control strain produces a zone diameter outside the accepted QC range. Patient isolates were tested in the same run. What is the appropriate action?
1Release patient interpretations if their zones appear plausible
2Reclassify all intermediate isolates as susceptible
3Withhold patient results, identify and correct the QC failure, and repeat affected testing before reporting✓ 정답
4Average the QC zone with the previous day's value
해설
AST interpretive results depend on a controlled, standardized method. An out-of-range QC result invalidates the affected run until the cause is corrected and acceptable QC performance is demonstrated.
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