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