Arkray Tuberculin PPD 1TU/0.1ML is a diluted, ready-to-use solution for intradermal injection, used in the Mantoux test to detect sensitization to Mycobacterium tuberculosis, the bacteria that causes tuberculosis. It is a highly purified protein derivative calibrated against international standards for accuracy. The 1TU/0.1mL strength indicates 1 tuberculin unit (TU) per 0.1 milliliter dose, which is a lower strength than the standard 5TU/0.1mL for Mantoux tests. The solution is stabilized with Tween 80 to prevent protein absorption and is packaged in amber-colored vials to protect it from light and preserve its potency.