[Comparison of P-nitrobenzoic acid and hydroxylamine hydrochloride for the primary screening of mycobacterial species].

Objectives: To examine the screening methods for mycobacteria recommended by the China Anti-tuberculosis Association, in order to increase laboratory diagnostic accuracy for mycobacterial screening.

Methods: Using P-nitrobenzoic acid (PNB 0.5 g/L) as the control group, and hydroxylamine hydrochloride (HA, in 125, 150 and 175 mg/L concentrations) as the study group, laboratory preserved strains of H37Rv M.