Table 1.

List of VOCs significantly enriched in breath and reproducibly detected in at least one method (ReCIVA or Tedlar bag), along with their respective retention time (RT), experimental nonpolar retention index (NPRI), and base m/z value

#	VOC	RT (avg)	exp. NPRI	Base m/z
1	Acetone	1.86	567.4874	43
2	Isoprene	1.91	570.5919	67
3	Dimethyl sulfide	1.96	573.6964	62
4	Sulfide, allyl methyl	3.3	656.897	73
5	Methyl propyl sulfide	3.53	671.1777	61
6	1-Propene, 1-(methylthio)-, (E)-	3.87	692.2883	73
7	Tetrachloroethylene	5.2	774.868	166
8	a-Pinene	7.78	935.0602	91
9	b-Pinene	8.1	954.929	93
10	3-carene	9.37	1033.7833	91
11	o-Cymene	9.65	1051.1685	119
12	Limonene	9.74	1056.7566	67
13	Benzothiazole	13.01	1259.7909	135
14	Indole	14.04	1323.7436	117
15	Caryophyllene	16.06	1449.1654	91