Solid culture in Middlebrook 7H11 was used to assess the viability of M. tb spiked in urine samples. A total of 0.1 mL was inoculated into each compartment of the Middlebrook 7H11. The media was supplemented with OADC, 0.5% (v/v) of glycerol, and a cocktail of antibiotics consisting of Polymyxin, Amphotericin, Carbenicillin, and Trimethoprim (PACT). The plates were incubated at 37 °C for a maximum of 6 weeks. Growth of M. tb colonies was observed weekly, and colony count was conducted from a dilution with 10–200 colonies.
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