TABLE 3.

Acetaminophen absorption testing characteristics

Patient ID #	Acetaminophen dose administered (mg)	Time between administration and level (min)	Acetaminophen concentration (mcg/ml) a	Patient received other oral acetaminophen doses in 24 h
1	975	32	7	No
2	975	90	<5.0	No
3	975	63	<5.0	No
4	975	77	<5.0	No
5	1000	50	<5.0	No
6	975	74	<5.0	No
7	975	93	6.7	Yes
8	975	95	<5.0	No
9	975	97	<5.0	No
10	975	92	23.5	Yes
11	975	86	14.4	No
12	975	69	<5.0	Yes
13	975	11	5.2	No
14	975	78	6.5	No
15	975	90	9.7	Yes
16	975	86	5.5	No
17	975	74	<5.0	Yes
18	950	49	6.6	No
19	975	63	<5.0	No
20	975	37	<5.0	No

^a An acetaminophen serum concentration ≥ 5mcg/ml was considered positive, and an acetaminophen serum concentration < 5 mcg/ml was considered negative.