MedlinePlus Medical Encyclopedia: Skin testing, PPD (R arm) and Candida (L)

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Skin testing, PPD (R arm) and Candida (L)

The right arm represents a positive reaction to PPD (a skin test for tuberculosis protein). The left arm represents a positive reaction to Candida protein. Candida antigen is tested to determine if the individual's immune system is functioning well; a normal immune system demonstrates a positive reaction.

Update Date: 7/17/2007

Updated by: Donald Accetta, MD, MPH, President, Allergy & Asthma Care, PC, Taunton, MA. Review provided by VeriMed Healthcare Network.

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