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HelpTest ID FGHTL Ghrelin Total, Plasma
Method Name
Radioimmunoassay (RIA)
Reporting Name
Ghrelin Total, PlasmaSpecimen Type
GI PlasmaCollect 10 mL of blood in special tube containing G.I. Preservative (MML supply number T125). Specimen should be separated in refrigerated centrifuge as soon as possible and send 3 - 5 mL plasma frozen. Ship frozen.
Patient preparation:
1. Patient should be fasting 10 - 12 hours prior to collection.
2. 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 specimen collection.
Specimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| GI Plasma | Frozen (preferred) | 180 days |
| Refrigerated | 24 hours |
Reference Values
GHRELIN (Total): pg/mL
(Plasma)
Adult Reference Range(s)
Normal weight/control subjects: 520 - 700 pg/mL
Obese subjects prior to diet: 340 - 450 pg/mL
Levels:
8:00 am - 12:00 pm: Up to 420 pg/mL
6:00pm: Up to 480 pg/mL
Obese subjects post induced weight loss: 450 - 600 pg/mL
Levels:
8:00 am - 12:00 pm: Up to 575 pg/mL
6:00 pm: Up to 600 pg/mL
Obese subjects post gastric-bypass surgery: Up to 120 pg/mL
Day(s) Performed
Varied; Monday through Friday
Report Available
5 - 7 daysPerforming Laboratory
Inter Science InstituteTest Classification
This test was performed using a kit that has not been cleared or approved by the FDA and is designated as research use only. The analytic performance characteristics of this test have been determined by Inter Science Institute. This test is not intended for diagnosis or patient management decisions without confirmation by other medically established means.CPT Code Information
83519