###Human: Does my skin test indicate tuberculosis? ###Assistant: Hi. Montoux test, PPD test is a very non-specific test and does not give you any confirmation for tuberculosis. It is used as an adjuvant test for diagnosis and never as sole test. It is read after 48 hours of injection. You have not mentioned the duration. You have to measure its diameter. It should be less then 10 x 10 mm. I cannot measure it online but apparently it is negative for tuberculosis (attachment removed to protect patient identity).