Tuberculosis (TB) Testing

Call (636) 528-6117 to schedule an appointment.

Tuberculosis Skin Testing (TB skin test) is offered for a nominal fee at the health department.

TB skin tests are by appointment Mondays, Tuesdays, and Fridays, except for holidays.


A TB skin test requires 2 visits—one to place the test; the second visit 48 to 72 hours later for the test reaction to be read. If the return appointment for test result is missed, the test must be repeated.  

If the TB skin test reacts, a medical evaluation is usually required.  The Communicable Disease Program Coordinator will help to guide you through that process and follow up with your treatment.  For more information on tuberculosis and testing go online to the CDC Tuberculosis info page

The TB skin test tells if a person was exposed to the tuberculosis bacteria, which can cause a contagious lung disease or affect other parts of the body such as the brain, kidneys or spine.