Gamma glutamyl transferase test

GAMMA GLUTAMYL TRANSFERASE TEST

DESCRIPTION – a gamma-glutamyl transferase test measures the amount of GGT in the blood. GGT is an enzyme found throughout the body, but it is mostly found in the liver. When the liver is damaged, GGT may leak into the bloodstream. High levels of GGT in the blood may be a sign of liver disease or damage to the bile ducts

METHODOLOGY – quantitative enzymatic

TURN AROUND TIME – within 24 hours

SPECIMEN REQUIERED –

COLLECT – serum separator or plasma separator tube

SPECIMEN PREPARATION – allow serum to clot completely at room temperature. Separate the serum or plasma from cells within 2 hours of collection. Transfer 1 ml serum or plasma to transport tube

STORAGE/TRANSPORT TEMPERATURE – refrigerated

STABILITY – ambient: 1 week; refrigerated: 1 week; frozen: 2 months

UNACCEPTABLE CONDITION – grossly hemolyzed specimens

SPECIAL INSTRUCTIONS – clinical history is mandatory