Arkray Tuberculin PPD 2TU/0.1mL is a sterile, ready-to-use solution for intradermal injection in the Mantoux test to detect Mycobacterium tuberculosis sensitization. It contains 2 tuberculin units (TU) of Purified Protein Derivative (PPD) in a 0.1 mL volume, calibrated against WHO standards, and packaged in amber-colored vials to protect from light. The test, read 48-72 hours after injection, indicates a person's immune response to TB by measuring induration (swelling) at the injection site.