Abstract: Provided herein are compositions, methods, systems and/or kits for measuring microbial viability in a sample. Certain embodiments of the present disclosure are related to detection tests comprising compositions, methods, systems and/or kits for measuring an antimicrobial minimum inhibitory concentration and for measuring microbial susceptibility to the antimicrobial. Certain embodiments of the present disclosure are related to detection tests comprising compositions, methods, systems and/or kits for assessing microbial proliferation in a sample.

Abstract: Methods and compositions for the detection of glucose-6-phosphate dehydrogenase (G6PD) enzyme activity in blood samples are described. Some embodiments disclosed herein provide methods for detecting G6PD activity in undiluted or minimally diluted blood samples, including obtaining a blood sample, and detecting G6PD activity present in the undiluted or minimally diluted blood sample by epifluorescence. Also provided are methods for detecting G6PD activity and detecting a bloodborne microorganism as two parts of a single test.