Ghrelin, Total (Plasma)
Test code
CPT code(s)*
Test resources
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Details
Methodology
Radioimmunoassay (RIA)
Assay category
This test was developed and its performance characteristics determined by Inter Science Institute. Values obtained with different methods, laboratories, or kits cannot be used interchangeably with the results on this report. The results cannot be interpreted as absolute evidence of the presence or absence of malignant disease.
This test is not available for New York patient testing.
Specimen requirements | |
|---|---|
| Patient preparation | Patient should be fasting for 10-12 hours prior to collection of specimen. Patient should not be on any medications or supplements that may influence: Cholecystokinin (CCK), Glucose, Growth Hormone, Insulin and/or Somatostatin levels, if possible, for at least 48 hours prior to collection. |
| Preferred specimen(s) | See Collection Instructions |
| Minimum volume | 1 mL |
| Collection instructions | Collect 10 mL blood in special ISI GI preservative tube yielding special GI plasma and separate in refrigerated centrifuge as soon as possible. Transfer 3-5 mL immediately into non-glass shipping vial. Freeze specimen at -20° C. Variance from these instructions must be disclosed to ISI prior to specimen analysis. Non-refrigerated centrifuge Collect 10 mL blood in special ISI GI preservative tube, invert tube gently several times. Return the tubes to the ice or refrigerate (2-8° C) for 15 minutes. Centrifuge ice-cold tubes to separate GI plasma. Recommended 1057 g for 10 minutes. After centrifugation, return tubes to the ice. Aliquot and freeze aliquoted plasma immediately. Ship frozen specimens frozen via overnight courier service with sufficient dry ice. |
| Transport container | Transport tube |
| Transport temperature | Frozen |
| Specimen stability | Room temperature: Unacceptable Refrigerated: 24 days Frozen: 6 months |
| Reject criteria | Gross hemolysis • Grossly Icteric |
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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