Complementary non-sputum diagnostic testing using oral swabs and urine LAM testing for TB in people with HIV

Domain:

healthcare

Record type:

paper

Creator:

AdrAlaLarXin

Publisher:

ope

Host:

Abstract Testing for mycobacterial lipoarabinomannan (LAM) in urine is a practical but insensitive alternative to sputum testing to diagnose tuberculosis (TB) in people with HIV (PWH). We evaluated urine LAM testing conducted in parallel with tests for Mycobacterium tuberculosis DNA in oral swabs. In a cohort of 131 South Africans (92% with HIV), combined urine LAM and oral swab testing was significantly more sensitive than either sample tested alone (57% vs. 35% and 39%, respectively), and 97% specific, compared to reference sputum testing (TB culture and Xpert Ultra). Complementary non-sputum sample testing increased sensitivity of TB diagnosis, without sacrificing specificity.

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