Additional file 1.

Comparison of LC-MS/MS and GC-MS measurements of circulating testosterone and DHT in rat sera. Circulating androgens were measured in sera using two mass spectroscopy methods, GC-MS and LC-MS/MS. Correlations of testosterone and DHT levels measured by the two methods were performed. Testosterone levels measured by GC-MS and LC-MS/MS correlated (r=0.86, p < 0.0001).

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Purves-Tyson et al. BMC Neuroscience 2012 13:95   doi:10.1186/1471-2202-13-95