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Table. 3.

Table. 3.

ImmunoCAP results of discrepant cases (N=14) between AlloScreen and Phadiatop assay (Phadiatop test and Phadiatop Infant test)

No. MAST results ImmunoCAP results, kUA/L (class)


AlloScreen (IU/mL) Phadiatop assay (PAU/L) d1 d2 w1 w6 f1 f2 f24
N12 Negative (72.46) Positive (0.38) 0.10 (0) 0.01 (0) 0.21 (0) 0.48 (1) ND ND ND
N32 Negative (30.18) Positive (0.40) 0.02 (0) 0.01 (0) 0.00 (0) 0.51 (1) ND ND ND
N44 Negative (96.18) Positive (0.68) 0.18 (0) 0.99 (2) 0.00 (0) 0.00 (0) ND ND ND
N58 Negative (92.21) Positive (0.43) 0.21 (0) 0.44 (1) 0.00 (0) 0.12 (0) ND ND ND
N68 Negative (84.58) Positive (1.87) 0.46 (1) 2.54 (2) 0.04 (0) 0.04 (0) ND ND ND
N79 Negative (12.93) Positive (0.88) 0.20 (0) 0.98 (2) 0.00 (0) 0.00 (0) ND ND ND
N86 Negative (23.70) Positive (0.35) 0.64 (1) 0.81 (2) 0.01 (0) 0.18 (0) ND ND ND
N100 Negative (77.86) Positive (0.37) 0.52 (1) 0.39 (1) 0.00 (0) 0.00 (0) ND ND ND
N21 Negative (63.53) Positive (0.38)* ND ND ND ND 0.14 (0) 0.27 (0) 0.03 (0)
N60 Negative (56.55) Positive (0.39)* 0.01 (0) 0.02 (0) ND ND 0.17 (0) 0.41 (1) 0.04 (0)
N83 Negative (80.27) Positive (0.42)* ND ND ND ND 0.00 (0) 0.03 (0) 1.89 (2)
N87 Negative (3.31) Positive (0.42) 1.10 (2) 2.84 (2) 0.00 (0) 0.00 (0) 0.00 (0) 0.01 (0) 0.01 (0)
I18 Positive (248.30)§ Negative (0.31) 0.31 (0) 0.30 (0) ND ND ND ND 0.10(0)
I19 Positive (110.80) Negative (0.30) 0.02 (0) 0.34 (0) ND ND ND ND 0.03(0)

Discrepant cases showed values <0.16 kUA/L by ImmunoCAP assay for the following allergens and data are not described: e1, cat; e5, dog; m6, Alternaria alternata; i6, cockroach; t7, oak; f3, fish (cod); f4, wheat; wheat; f14, soybean; f13, peanut. Phadiatop assay values ≥0.35 PAU/L, AlloScreen values >100 IU/mL, and ImmunoCAP values ≥0.35 kUA/L are considered positive. N21 was not confirmed.

*These are the results of Phadiatop Infant test. This is a result of both Phadiatop test and Phadiatop Infant test. Test for hx2 (house dust mixes) also showed negative results. §Positive result for D. pteronyssinus (I18). Positive result for D. farinae (I19). d1, D. pteronyssinus; d2, D. farinae; w1, ragweed; w6, mugwort; f1, egg white; f2, cow’s milk; f24, shrimp, ND; not done.

Lab Med Online 2020;10:301~306 https://doi.org/10.47429/lmo.2020.10.4.301
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