oops! I just sent mine in! lol oh well, we'll see what it says.

Unless specificall requested or with tests typically conducted by only a few testing labs, nitrogen is usually NOT one of the soil nutrients tested for. The testing results are generally considered to be unreliable. This is because nitrogen is extremely mobile in the soil, is subject to leaching and runoff, is affected by soil pH, is different in wet versus dry soils, is lost to the atmosphere in vaporization and is present in a couple of different forms - nitrate and ammonium. Both can be accessed and utilized by plants (nitrate tends to be preferred by the majority) but are available at different soil temperatures. Ammonium (NH4+) at soil temperatures below 50F and nitrate (NO3-) at soil temperatures above 50F.

The only stipulation that the Michigan State University USDA Cooperative Extension Service has about soil is that it be dry. I've seen nothing about soil temperature, although the availability of Nitrogen in soil is dependant on the soil temperature because that, the soil temperature, affects the movement of the soil bacteria that will be supplying that N.