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Laboratory Test Directory

Glutamyl Transpeptidase (Updated)

Components

Name Method Department Units
GGTP Enzymatic, reflectometry
Core Lab, Chemistry, Routine U/L

Specimen Requirements

Plasma Spun, Serum Spun

Container Type Container Size Specimen Volume
Preferred

Green tube (Lithium heparin), with Gel

3 mL 3 mL
Alternate

Green tube (Lithium heparin), No Gel

Micro sample tube 1 mL
Alternate

Green tube (Lithium heparin), No Gel

3 mL 3 mL
Alternate

Gold tube, (SST) with Gel

3.5 mL 3.5 mL
Alternate

Red tube, (no anticoagulant), No Gel

3 mL 3 mL
Alternate

Green tube (Lithium heparin), with Gel

Micro sample tube 0.3 mL
Stability

Room temperature - 7 day(s)
Refrigerated - 7 day(s)
Frozen - 2 month(s)

Specimen Preparation

  • Centrifuge within 4 hours, separate supernatant and refrigerate

Reasons for Rejection

  • Gross hemolysis
  • Not received at proper temperature
  • Not received within specified time frame

Comments

Hemolyzed specimens may falsely increase result. Puncture site must be free from soap contamination as glycerol may interfere with analysis.

CPT Code

  • 82977