Blood Drug Testing

What does GGT mean on a blood chemistry test?

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1. Gamma glutamyl transferase (GGT or GGTP, or Gamma-GT) (EC 2.3.2.2) is a liver enzyme. The enzyme is also present in other tissues, such as the epididymis. Its level in the blood may be tested for, as an elevated level may indicate an abnormality in the liver, though this can be caused by a number of conditions including: congestive heart failure cholestasis (congestion of the bile ducts) cirrhosis of the liver Restricted blood flow to the liver Necrosis of the liver Liver tumors hepatitis hepatotoxic drugs Its levels are increased in chronic and acute alcohol abuse.