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Test Code LAB85 Gamma Glutamyltransferase (GGT)

Specimen Requirement

0.5 mL serum or Lithium heparin plasma; SST and PST acceptable.

Specimen Stability

7 days at 20-25° C

7 days at 2-8° C

Testing Schedule

Daily

Reference Range

9 – 36 U/L

Testing Department

Chemistry

Method

L-Gamma-glutamyl-3-carboxy-4-nitroanilide substrate

CPT Code

82977