Table 1—

Methods of exhaled hydrogen peroxide measurement

Reference		Pretreatment	Stability/storage	Detection limit
Spectrophotometric method:
10		No	?	?
11		No	0 days	?
12		No	6 h	0.1 µM
18		No	2 days	0.1 µM
19		No	2 days	0.1 µM
Fluorometric method:
14	ARRD 1993	HPA and HRP	1 month	?
13	ERJ 1997	HPA and HRP	?	0.1 µM
15	ERJ 1996	No	14 days	0.1 nM
16	ERJ 1997
17	Monaldi 1998	No	14 days	0.083 µM

HPA: hydroxyphenylacetic acid
HRP: horse radish peroxide