TABLE 2.

Median Concentrations of Urinary Metabolites in Growing Up Healthy Children, 2004 to 2007 (µg/g Creatinine)

	NHANES	All			Girls			Boys
	Child Median (2005–2006)	n	Median	IQR	n	Median	IQR	n	Median	IQR
Cotinine (girls)	<0.5a	386	1.3	0.6–4.7	386	1.3	0.6–4.7	—	—	—
HMWPsb	∼150	506	281	158–500	405	270	149–479	101	316	185–583
Mono-benzyl phthalateb	35.6	506	26	13–54	405	24	13–48	101	35	21–71
Mono-(3-carboxypropyl) phthalate	5.06	506	5.1	3.4–8.9	405	5.1	3.3–9.4	101	5.2	3.6–8.1
Sum di-(2-ethylhexyl) phthalate	∼120	506	212	113–420	405	206	110–410	101	242	131–471
Mono-(2-ethyl-5-carboxypentyl) phthalate	54.2	506	110	62–215	405	110	61–208	101	117	69–240
Mono-2-ethylhexyl phthalate	3.26	506	6.2	3.2–12.9	405	6	3.1–12.6	101	6.8	3.7–13.9
Mono-(2-ethyl-5-hydroxyhexyl) phthalate	37	506	68	35–133	405	66	33–128	101	74	40–156
Mono-(2-ethyl-5-oxohexyl) phthalate	24.4	506	43	22–84	405	41	21–82	101	51	26–98
LMWPs	∼70	506	212	136–405	405	216	135–409	101	198	141–368
Mono-ethyl phthalate	75.9	506	116	67–261	405	117	67–287	101	98	67–184
Mono-isobutyl phthalate	9.46	506	22	14–36	405	22	13–36	101	23	15–36
Mono-n-butyl phthalate	33.9	506	63	39–97	405	61	38–95	101	73	46–113
2,5-Dichlorophenolb	8c	505	68	31–189	405	64	30–160	100	79	33–259

See Supplemental Table 6 phthalates. IQR, interquartile range; —, not applicable.

^aUrine test as 5*serum cot: 0.050; 75th percentile, 0.22; 90th percentile, 1.22.

^bWilcoxon rank test for boys and girls differ, P < .05.

^c75th percentile: 24.7 µg/g creatinine.