Gamma-glutamyl transferase (γ-GT) is a cellular enzyme with wide tissue
distribution in the body, primarily in the kidney, pancreas, liver and
prostate.
Measurements of gamma-glutamyl transferase (γ-GT) activity are used in
the diagnosis and treatment of hepatobiliary diseases such biliary
obstruction, cirrhosis or liver tumours1,2,5,6.
Clinical diagnosis should not be made on a single test result; it should
integrate clinical and other laboratory data.

STORAGE AND STABILITY

All the components of the kit are stable until the expiration date on the
label when stored tightly closed at 2-8ºC, protected from light and
contaminations prevented during their use.
Do not use reagents over the expiration date.
Signs of reagent deterioration:
– Presence of particles and turbidity.
– Blank absorbance (A) at 405 nm ≥ 1,80.

ADDITIONAL EQUIPMENT

– Spectrophotometer or colorimeter measuring at 405 nm.
– Thermostatic bath at 25ºC, 30ºC o 37ºC (± 0,1ºC)
– Matched cuvettes 1,0 cm light path.
– General laboratory equipment.

SAMPLES

Serum1
-γ-GT is stable for at least 3 days at 2-8ºC, 8 hours at 15-
25ºC and 1 month at –20ºC.