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A Comparative Study of the Old Tuberculin Tine Test and the PPD-Tine TestState University of New York, Downstate Medical Center
State University of New York, Downstate Medical Center
State University of New York, Downstate Medical Center
State University of New York, Downstate Medical Center and Kings County Hospital Center Forty-one children suspected of having tuberculosis were simultaneously given an intermediate strength Mantoux test, an old tuberculin tine test (OT), and a purified protein derivative (PPD) tine test. Each test was read at 48 hours, and the largest diameter of induration was recorded. Twenty-nine patients had a positive reaction to the Mantoux test, 20 patients had a positive reaction to the OT tine test, and 16 patients had a positive reaction to the PPD-tine test. There were seven instances of a doubtful reaction to the OT tine test and nine to the PPD-tine test. Two children with positive Mantoux tests had negative OT tine tests, and four with positive Mantoux tests had negative PPD-tine test reactions. There was a significant difference between the number of positive reactors to the Mantoux test and both tine tests. If all tine test reactions of 2 mm or more were considered positive (doubtful plus positive reactors), there was no significant difference between any of the tuber culin tests. All suggestively positive tine reactors should, therefore, be retested with a Mantoux test to avoid false-negative interpretation of the tines.
Clinical Pediatrics, Vol. 19, No. 6,
389-391 (1980) |
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