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Test Code LAB17 Gamma-Glutamyltransferase (GGTP), Plasma or Serum

Additional Codes

Test Name in EPIC LAB Test Code Mnemonic
GGTP LAB17 GGTP

 

Methodology

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

Specimen Requirements

Submit only 1 of the following specimens:

 

Preferred:

Specimen Type: Plasma

Container/Tube: Light-green top (lithium heparin gel)

Specimen Volume: 1 mL

Specimen Minimum Volume: 0.5 mL

Collection Instructions:

1. Hemolyzed specimen is not acceptable.

2. Separate plasma from cells within 2 hours of draw.

3. If plunger filters are used, immediate removal of plasma is indicated unless an air gap can be created between the device and specimen.
Additional Information:

1. Avoid repeated freeze/thaw cycles.

2. Label specimen appropriately (plasma).

 

Alternate:

Specimen Type: Serum

Container/Tube: Serum gel

Specimen Volume: 1 mL

Specimen Minimum Volume: 0.5 mL

Collection Instructions:

1. Hemolyzed specimen is not acceptable.

2. Separate serum from cells within 2 hours of draw.

3. If plunger filters are used, immediate removal of serum is indicated unless an air gap can be created between the device and specimen.
Additional Information:

1. Avoid repeated freeze/thaw cycles.

2. Label specimen appropriately (serum).

Specimen Transport Temperature

Refrigerate 5 days/Ambient 8 hours OK/Frozen OK

Day(s) Test Set Up

Monday through Sunday

Reference Values

0-14 days: 23-219 IU/L

15 days-1 year: 8-127 IU/L

1-10 years: 6-16 IU/L

11-18 years: 7-21 IU/L

Adult Males: 13-74 IU/L

Adult Females: 7-37 IU/L

Test Classification and CPT Coding

82977

Performing Laboratory

Chemistry-

Central Region: St. Joseph's Medical Center Lab

East Region: Ashland Clinic Lab, SMDC Clinical Lab, St. Mary's Hospital - Superior Lab

West Region: Ada Hospital Lab, Fargo Hospital Lab