The methods of fast recovery of physical ability and prevention and cure the generation of low level of serum testosterone are regarded more and more by sports medicine community.

RESULTS: LAP was more stable in weak acid solution than in base solution and hydrolyzed fast in serum and tissue homogenates, especially in liver homogenate.

Conclusion The V-acid oxidation of serum bilirubin simple, fast, stable, linear range wide, and can resist hemolysis, blood lipid interference.