Pirquet's reaction

Pirquet's reaction

 [per-kāz´]
appearance of a papule with a red areola 24–48 hours after introduction of two small drops of Old tuberculin by slight scarification of the skin; a positive test indicates previous infection with tubercle bacilli.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

Pirquet’s reaction

An obsolete type of tuberculin test in which the challenge material (old tuberculin) is injected by scarification; in current medical practice, the Tine (Heaf and Tine) and Mantoux tuberculin tests are widely preferred.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.