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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

Performing Laboratory

Minnesota Sites North Dakota Sites
SMDC Clinical Lab (Duluth) Fargo Hospital
St. Joseph's Medical Center (Brainerd)  

Test Classification and CPT Coding

82977

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