I've contacted IdeaLabs regarding there being a measurement error:

"It is not an error. We actually run 3 independent tests on each sample to weed out outliers and then average the results. The high DHT and androsterone make sense considering their precursors DHEA-S is 10x the upper limit of the range. It may be worth doing some blood work for those that are very high and see what the doctor has to say about it if they come back high again.
The tests you have seen from bodybuilders are most likely either in blood or urine and those are not reliable as they do not reflect cellular levels. Cells often accumulate steroids in concentrations up to 100 times higher (e.g. DHEA) than what is present in blood and the hair test is a good surrogate for tissue levels.
http://haidut.me/?p=2104"