From: Mycobacterium tuberculosis thymidylate kinase antigen assays for designating incipient, high-risk latent M.tb infection
TB status
EIA values
95% CI
Active TB (ATB)
ATB=OD>1.00
1.170 to 1.528
Latent M.tb Infection (LTBI)
LTBI=0.255>OD<1.00
0.2690 to 0.6396
No TB (NTB)
NTB=OD<0.88
0.1527 to 0.8751