Normal value: The normal value in serum ranges from up to 1,1 mg/dl for men and up to 0,9 mg/dl for women or from 44 to 97 µmol/l for men and 44 to 80 µmol/l for women
Pathologically increased: in acute or chronic renal insufficiency, rhabdomyolysis.
Pathologically decreased: muscular atrophy