(a).

Patient group	Method	Normal	Reduced	Increased
Total IgA	Nephelometry	7	13	4
Total IgG	Nephelometry	16	5	2
Total IgM	Nephelometry	14	6	3
Total IgE	Nephelometry	13	0	8
spec.IgE Phadiatop	FEIA	16	—	0
spec.IgE FX5	FEIA	18	—	2
Calprotectin	ELISA	21	0	2