The purpose of this blood serum test is to help detect and evaluate treatment of acute hepatic disease, especially hepatitis, and cirrhosis without jaundice. To help distinguish between mytyocardial (heart) and liver tissue damage (used with the AST enzyme test). Also to assess hepatotoxicity of some drugs.
The average wingspan for an NBA player (even normal 6'0 guys) is +4 inches. I think that around your height thing is just an estimate. For the general population, the average might be +2 inches.
WINGSPAN FOR A BIRD. If you find yourself chilling in the South Polar Ocean, keep an eye out for the wandering albatross, the bird with the longest wingspan. Spotting it should not be too difficult as from tip to tip the wings of the wandering albatross average over 10 feet in length with a 12 foot wingspan being not that uncommon. There have been unsubstantiated reports of measurements taken of wingspans exceeding 17 feet. The wandering albatross' wingspan is up to 3 times that of it's 4.4 foot body length.