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. Author manuscript; available in PMC: 2015 Nov 2.
Published in final edited form as: Anal Chim Acta. 2013 Jun 6;787:267–273. doi: 10.1016/j.aca.2013.05.055

Table 5.

Mean concentrations (ng mL−1) and frequency of detection of DEET and two oxidative metabolites in 75 urine samples form anonymous adult volunteers.a

Analyte
DEET DHMB DCBA
Number of samples with detectable concentrations 9 12 36
Detection frequency 12% 16% 48%
Mean (ng mL−1) 4.4 10.2 1103
Std Deviation of the mean (ng mL−1) 6.1 7.0 2120
a

Limit of detection (LOD) = 0.1 ng mL−1 (DEET, DHMB) and 1.0 ng mL−1 (DCBA).

To calculate the mean and standard deviation, we only used concentrations >LOD.