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.
As is true with most birds of prey, the female is almost always larger than the male. A female bald eagle may stand as much as 107 centimeters (42 inches) high, with a wingspan of up to 240 centimeters (8 feet). Males stand up to 90 centimeters (35 inches) high, with wingspans of nearly 200 centimeters (6 1/2 feet).