“…Studies of IGRAs in patients with uveitis from multiple centers have suggested comparable sensitivity, but improved specificity, relative to TST. 41,42 Although the IGRA cannot replace conventional methods to diagnose active TB, they may play a role in certain patient population, including immunocompromised patients, young children who cannot produce a sputum sample, patients with smear-negative pulmonary TB, and those with extrapulmonary disease, especially in highly endemic areas. 43 PCR is a sensitive and highly specific technique that can amplify mycobacteial DNA several-fold for easy detection.…”