Urinalysis Testing Phase One: Visual Examination. Checking the color and clarity of the urine sample is the first test performed. The urine sample is visually examined for color, with yellow, straw, or nearly colorless being typical normal values.
Paxson sits on the shores of Paxson Lake and is accessible by road at Mile 185 of the Richardson Highway, right where it intersects with the Denali Highway.
A cave in Mexico isn't Mars, of course, and a lake in northern Alaska isn't Europa. But it's the search for extraterrestrial life that has taken JPL astrobiologist Kevin Hand and the other members of his team, including John Leichty, to Sukok Lake, 20 miles from Barrow, Alaska.