41400:GASTRIN
Author PeaceHealth Laboratories
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Methodology: |
Chemiluminescent Immunoassay (CLIA) |
Edit Date: |
4/18/2010 |
Performed: |
Daily |
Released: |
Same day as tested |
CPT Code: |
82941 |
Specimen Collection Details |
Collection: |
One 7.5 mL serum separator tube (SST). Also acceptable: One 5 mL red top tube. Patient must be fasting for 10 hours or longer for basal serum gastrin levels. |
Handling: |
Allow to clot, centrifuge and separate serum from cells within one hour. Freeze immediately. Allow no more than one freeze/thaw cycle. If multiple tests are ordered, send a separate specimen for this test. |
Stability: |
4 hours refrigerated at 2-8° C or 30 days frozen at -20° C. |
Standard Volume: |
1 mL serum. |
Minimum Volume: |
0.5 mL serum. |
Transport: |
Frozen on dry ice. |
Comments: |
Measurement of the major forms of gastrin or immunoreactive gastrin in serum is the definitive test for the diagnosis of gastrinoma in patients with gastric acid hypersecretion. |
Rejection Criteria: |
Hemolysis; lipemia; specimen which has been frozen and thawed more than once. |