Table 5.

Results for cocaine (COC), benzoylecgonine (BE), meta-hydroxybenzoylecgonine (mOHBE), morphine (MOR) and/or codeine (COD) in meconium specimens, and percentage thrice-weekly urine specimens’ results in the second and third trimester (T).

	Meconium (ng/mL)					Urine
						Opiates			Cocaine
Subject	COC	BE	mOHBE	Morphine	Codeine	a2nd T % positive	b3rd T % positive	cday last positive	a2nd T % positive	a3rd T % positive	cday last positive
1	N	N	24.3	10.2	N	100	0.0	42	33.3	0.0	46
2	N	4.3	200.3	43.0	N	STT	6.7	27	STT	63.3	25
3	N	2.4	155.1	65.9	N	STT	11.5	31	STT	7.7	31
4	N	N	26.0	10.0	N	STT	10.7	61	STT	0.0	AN
5	N	N	N	N	N	25.0	0.0	104	25.0	0.0	104
6	-	-	-	-	-	3.0	0.0	99	0.0	0.0	AN
7	-	-	-	-	-	0.0	0.0	AN	0.0	0.0	AN
8	N	N	12.5	14.0	N	33.3	0.0	75	0.0	0.0	AN
9	-	-	-	-	-	16.7	63.6	3.0	0.0	0.0	AN
10	N	N	N	N	N	18.2	0.0	120	0.0	0.0	AN
11	4.4	62.0	57.3	2,555.0	16.3	25.0	7.1	15	31.2	25.0	13
12	N	N	119.0	37.0	N	17.6	6.7	34	5.9	6.7	34
13	N	N	12.2	N	N	55.5	0.0	118	0.0	4.4	62
14	N	N	N	2,281	N	2.8	0.0	128	0.0	0.0	AN
15	-	-	-	-	-	0.0	14.7	18	0.0	0.0	AN
16	233.0	969.0	254.0	N	N	94.1	-	-	88.2	-	-
17	N	N	N	N	N	18.7	0.0	100	0.0	0.0	AN
18	N	N	104.0	N	N	3.0	0.0	176	3.0	0.0	176
19	N	N	68.0	N	N	-	-	-	-	-	-

N negative results (<limit of quantification); - data unavailable

^a% positive urine specimens in 2^nd trimester

^b% positive urine specimens in 3^rd trimester

^cdays from last positive urine specimen to birth

STT: participant started in 3^rd trimester; AN: always negative.