TB/PPD 2-Step Test

Diagnoses a person's tuberculosis infection.

occupational health screenings

TB/PPD 2-Step test

A TB/PPD 2-Step Test is a skin test used to diagnose silent latent tuberculosis infection (LTBI). PPD stands for purified protein derivative. The testing follows the below diagram depending on what the reaction is.

Two-Step TST Testing. Reprinted from Centers for Disease Control and Prevention, 2022. Retrieved from https://www.cdc.gov/tb/topic/testing/healthcareworkers.htm

Occupational Health Screenings help keep your organization’s workforce healthy and safe.


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