NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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What indicates a pass in a media-fill test for compounding?

Liquid changes color after 7 days of incubation
Solidification of the medium
Liquid remains clear after 14 days of incubation
pH change in the liquid

The correct answer is: Liquid remains clear after 14 days of incubation

In a media-fill test for compounding, a pass is indicated when the liquid remains clear after 14 days of incubation. This indicates that there was no microbial contamination during the compounding process. The other options are not indicators of a pass in a media-fill test: A. Liquid changing color after 7 days could suggest microbial growth or contamination. B. Solidification of the medium does not provide information on microbial contamination. D. pH change in the liquid could be due to various factors and is not a specific indicator of microbial contamination in the context of a media-fill test.