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Test Code 62871080 GGT

Performing Laboratory

Torrance Memorial Laboratories

Specimen Requirements

Submit only 1 of the following specimens:

 

Hospital Preferred Specimen Type: Plasma

Container/Tube: Lithium heparin gel

 

Outreach Preferred Specimen Type: Serum

Container/Tube: Serum gel

 

Spin Instructions:

Serum gel:  Allow to sit for 30 minutes prior to spinning.  Spin within 2 hours of collection.

Heparin plasma: Spin within 45 minutes of collection.   

Also acceptable:  Red top tube

Specimen Transport Temperature

Ambient

 

Storage Temp Stability:
Room Temperature: 7 days
Refrigerated Temperature: 7 days
 

Storage Temp Stability: Serum
Room Temperature: 12 hours
Refrigerated Temperature: 7 days
 

Methodology

Spectrophotometry

Reference Range

New reference range effective 6/11/25

Males:  ≤ 54 units/L

Females: ≤ 37 units/L

Day(s) Test Set up/TAT

Performed:

Daily

Available STAT

TAT:

STAT <1 hr

Routine < 4 hrs

Aliases

Gamma-glutamyl Transferase

CPT Code

82977