Gastrin Secretin Stimulation
Test Mnemonic
GASTST
CPT Codes
- 82938 - QTY (4)
- 82941 - QTY (1)
Includes
- Gastrin at baseline
- Gastrin at 4 timepoints post stimulation
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Frozen | Collect separate samples for baseline and for each of the four timepoints post stimulation. Aliquot and freeze without delay. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL | For each specimen collected. |
Stability
| Environmental Condition | Description |
|---|---|
| Frozen | 30 days |
| Refrigerated | 6 days |
Days Performed
Mon, Wed, Fri
Turnaround Time
1 - 4 days
Methodology
| Name | Description |
|---|---|
| Chemiluminescence Immunoassay (CLIA) |
Special Info
Patients taking a Biotin dose of up to 5 mg/day should refrain from taking Biotin for 4 days prior to sample collection. Patients taking a Biotin dose > 5 mg/day to 10 mg/day should refrain from taking Biotin for 7 days prior to sample collection. Patients taking a Biotin dose > 10 mg/day should consult with their physician or the laboratory prior to having a sample taken.Clinicians should consider biotin interference as a source of error, when clinically suspicious of the laboratory result.
Clinical Info
For diagnostic purposes, the results obtained should always be used in combination with the clinical exam, patient medical history, and other findings.
Clinical Limitation
Lipemic,icteric or grossly contaminated samples may give erroneous results. Hemolyzed samples may indicate mistreatment of a specimen before receipt in the laboratory; hence the results should be interpreted with caution.