Table 1.

Details of number of tryptase samples under each clinical category

	IgE-mediated reactions				Non-IgE-mediated reactions				No cause established				Total
Number of tryptase samples	0	1†	2‡	3‡	0	1†	2‡	3‡	0	1†	2‡	3‡
n	17	29	21	36	2	4	1	3	14	16	2	16	161

^†Among these patients with single tryptase measurements, 27 immunoglobulin (Ig)E-mediated reactions, four non-IgE mediated reactions and 11 with no cause established were baseline tryptase measurements.

^‡Among patients with two or three tryptase measurements, a baseline tryptase measurement was not available for five with IgE-mediated reactions, one non-IgE-mediated reaction and four with no cause established.