TPO and tuberculosis: A study investigating the antibody response to LAM and 7 mycobacterial protein antigens (ESAT-6, Tpx, PstS1, AlaDH, MPT64, 16kDa and 19kDa) and 2 antigen cocktails (TUB: PstS1, 16kDa and APA; TB-LTBI: Tpx, L16) found that individually anti-16 kDa IgA and anti-MPT64 IgA were best able to differentiate between LTBI active TB disease (66).