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Table 1 Concordance and discordance between skin testing (PST ± ID) and RAST in all patients tested for D. farinae, cockroach mix, cat epithelium and dog epidermal.

From: Skin testing versus radioallergosorbent testing for indoor allergens

ST & RAST comparison D. farinae
n = 118
Cockroach
n = 60
Cat epithelium
n = 90
Dog epidermal
n = 90
Concordance Both + or - 69/118 (58.5%) 32/60 (53.3%) 56/90 (62.2%) 47/90 (52.2%)
ST+ of RAST+ 48/49 (98.0%) 8/8 (100%) 22/24 (91.7%) 8/10 (80.0%)
ST- of RAST+ 1/49 (2.0%) 0/8 (0%) 2/24 (8.3%) 2/10 (20.0%)
ST+ of RAST- 48/69 (69.6%) 28/52 (53.8%) 32/66 (48.5%) 41/80 (51.3%)
ST- of RAST- 21/69 (30.4%) 24/52 (46.2%) 34/66 (51.5%) 39/41 (48.7%)
RAST+ of ST+ 48/96 (50.0%) 8/36 (22.2%) 22/54 (40.7%) 8/49 (16.3%)
RAST- of ST+ 48/96 (50.0%) 28/36 (77.8%) 32/54 (59.3%) 41/49 (83.7%)
RAST+ of ST- 1/22 (4.5%) 0/24 (0%) 2/36 (5.6%) 2/41 (4.9%)
RAST- of ST- 21/22 (95.5%) 24/24 (100%) 34/36 (94.4%) 39/41 (95.1%)