Table 1.

Chromatographic peak area (full scan analysis) ratios for conjugated metabolites to M-3-G in urine samples collected from five cancer patients receiving morphine (60 mg day⁻¹)

Patients	M1	M2	M3	M4	M5	M6	Morphine
A	100	14.1	0.12	0.29	1.65	0.15	3.93
B	100	30.3	0.15	0.80	2.03	0.33	13.9
C	100	26.3	0.12	0.70	4.94	0.16	14.9
D	100	22.6	0.071	0.18	2.30	n.d.	14.7
E	100	16.0	0.10	0.22	6.45	0.97	23.7
Mean	100	21.9	0.11	0.44	3.47	0.40	14.2
SD		6.81	0.03	0.29	2.11	0.39	7.02