We have made a comparative study using three different methods in measuring tuberculin hypersensitivity: 1.The classic Mantoux test with PPD, 2.Mantoux test+thermographic measurement of the skin reaction, 3.In vitro test in lymphocyte cultures using PPD as immunogen. The number of PPD sensitive ...
In order to investigate if the inexperienced reader can use both methods with the same degree of accuracy, we performed Mantoux tests in 539 healthy subjects, aged 20-57 years (mean 33 years), using the PPD-RT 23 in dose 2 I.U. (1/5000). In random order and a double-blind fashion...
Changes in skin fold thickness measurements at the bovine purified protein derivative (PPD) administration site, between 0 and 72 h, were compared with differential changes between the bovine and avian PPD sites, for 34 warthogs, to evaluate the performance when different interpretation criteria ...