Table 1.

Relative concentration (counts adjusted relative to standard) of two urinary volatiles in intact B6 urine and in high molecular weight (HMW ≥ 3 kDa) and low molecular weight (LMW < 3 kDa) fractions.

	2-sec-butyl 4,5 dihydrothiazole		3-4 dehydro-exo-brevicomin
	Male	Female	Male	Female
Intact urine	33	0	1.5	0.4
HMW	48	0	1.8	0.7
LMW	0.9	0	0.3	0.1
Water control	0	0	0	0