TABLE 2.

Concentration of dust mite allergen and endotoxin

	N	GM	25th	50th	75th
Der1 (Der p 1 + Der f 1)
Der 1, μg/m2	3089	64.95	22.52	54.07	158.76
Der 1, μg/g	3089	3.89	1.57	3.17	8.37
Endotoxin
Endotoxin, EU/m2 × 105	2941	2.71	1.51	2.84	5.02
Endotoxin, EU/mg	2941	16.0	9.80	16.0	25.0

Abbreviations: Der p 1, Dermatophagoides pteronyssinus; Der f 1, Dermatophagoides farinae; EU, endotoxin unit, GM, geometric mean.