MicrobiologybioRxivPreprint
Excessive sample reagent incubation time increases the risk of false rifampin resistance results in Xpert(R) MTB/RIF Ultra tests performed on paucibacillary Mycobacterium tuberculosis sputum.
Gayatri Shankar Chilambi, Kunj Modi, Paulami Rudra…·David Alland
This study shows that extended incubation of paucibacillary sputum samples beyond 4 hours in sample reagent increases false rifampin resistance results in Xpert MTB/RIF Ultra tests.
DOI 10.64898/2026.10.10.758171