Preferred amount: 1.0 mL Serum
Minimum amount: 0.5 mL Serum
24hrs; Also offered STAT at an additional charge
Centrifuge required?: Yes
To differentiate between liver and bone disease as a cause for elevated alkaline phosphatase (ALP); sometimes to help detect liver disease and/or alcohol abuse. Elevated GGTP and ALP together are consistent with biliary disease.