Levels of urinary nitrite and nitrate (NO
). Levels of urinary nitrite and nitrate (NO2
-) in HIV-/TB patients (n = 58), HIV+/TB patients (n = 35), household contacts to smear positive TB patients (HC, n = 12) and blood donors (BD, n = 45) presented as median and interquartile range. * (p < 0.05).