FIG 1.

WHO-endorsed and emerging molecular tests for TB and drug resistance. Outlined in blue are WHO-endorsed NAATs, including LPAs (14), Xpert Ultra (20), LAMP (16), and Truelab (21). Tests that are not yet WHO endorsed but are under development or evaluation are outlined in orange. Images shown are examples of products within each category. DST, drug sensitivity testing; GX, GeneXpert; LAMP, loop-mediated isothermal amplification; LPA, line probe assay; POC, point of care; NAAT, nucleic acid amplification test.