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.
The albatross has the largest wingspan of any other bird species, at approximately 11.5 feet (3.5 m). This large wingspan allows the bird to glide for hundreds of miles without ever flapping its wings. By the time an average albatross reaches 50 years old, the bird has flown over 3.7 million miles (6 million km).