Table 1

Ten replicates weighing 1, 2, 3, 4 and 5 mg of hair from the same subject (50 samples in all) were extracted, measured and total within-assay coefficient of variation calculated

Weight of hair sample (n = 10 for each weight)

Coefficient of variation %


1 mg

46.2

2 mg

16.1

3 mg

12.4

4 mg

13.6

5 mg

7.9


KarlĂ©n et al. BMC Clinical Pathology 2011 11:12   doi:10.1186/1472-6890-11-12

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