Table 2.

Distribution of creatinine-corrected concentrations (μg/g) of urinary TCPs among children aged 6–15 years in NHANES, 1999–2004

	2,4,5-TCP				2,4,6-TCP
Data cycle	N	<LOD (%)	≥LOD		N	<LOD (%)	≥LOD
			Median (μg/g)	Range (μg/g)			Median (μg/g)	Range (μg/g)
1999–2000	848	50.5	1.18	0.25–66.0	845	12.0	3.71	0.34–1772.1
2001–2002	1013	95.2	6.17	0.51–124.7	1018	33.3	4.76	0.68–106.6
2003–2004	657	61.3	0.12	0.03–5.2	657	62.1	0.65	0.16–22.2
Overall	2518	70.8	1.03	0.25–124.7	2520	33.6	3.58	0.16–1772.2

LOD, below the limit of detection; TCP, trichlorophenol.