Please see the two links below for studies that evaluates the diagnostic accuracy of Xpert Ultra for TB meningitis. The studies report interesting findings from Vietnam and Uganda.
https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(19)30649-8/fulltext
https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(19)30550-X/fulltext