Fig. 1

Agreement of ALEX versus ISAC test results by classes defined for ISAC in 10 patients (for all overlapping allergen components) # patient number. ALEX results are classified in five different categories: negative (< 0.3 kUA/L), low (0.3–1 kUA/L), moderate (1–5 kUA/L), high (5–15 kUA/L) and very high (> 15 kUA/L). ISAC results are classified in four different categories: negative (< 0.3 ISU-E), low (0.3–1.0 ISU-E), moderate-high (1–15 ISU-E) and very high > 15 ISU-E). For overall class agreement between ALEX and ISAC results were classified in four sensitization categories [< 0.3 (0) (negative), 0.3–1 (1) (low), 1–15 (2 + 3) (moderate-high), > 15 (4) (very high)]