Gastrin
Test code
CPT code(s)*
Test resources
Details
Methodology
Immunoassay (IA)
Specimen requirements | |
|---|---|
| Patient preparation | Overnight fasting is required, preferably 12 hours or more. |
| Preferred specimen(s) | 1 mL frozen serum |
| Minimum volume | 0.5 mL |
| Collection instructions | Dietary supplements containing biotin may interfere in assays and may skew analyte results to be either falsely high or falsely low. For patients receiving the recommended daily doses of biotin, draw samples at least 8 hours following the last biotin supplementation. For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation. |
| Transport container | Transport tube |
| Transport temperature | Frozen |
| Specimen stability | Room temperature: Unacceptable Refrigerated: Unacceptable Frozen: 28 days |
| Reject criteria | Gross hemolysis • Grossly lipemic • Received thawed • Grossly icteric |
Reference Range(s)
Reference range applies to fasting specimen only
| <5 years | Not established |
| 5-17 years | <65 pg/mL |
| ≥18 years | ≤100 pg/mL |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
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