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HelpTest ID FIRGH Growth Hormone-Releasing Hormone (IR-GH-RH) (Immunoreactive GH-RH)
Specimen Required
Patient Preparation: Patient should not be on any medications that may influence pituitary secretion.
Specimen Type: Serum
Collection Container/Tube: Red top or SST
Submission Container/Tube: Plastic vial
Specimen Volume: 3 mL
Collection Instructions:
1. Draw blood in a plain, red-top tube(s), serum-gel tube(s) is acceptable.
2. Separate immediately and send 3 mL of serum frozen in a plastic vial.
Secondary ID
90161Method Name
Direct Enzyme Immunoassay (EIA)
Reporting Name
Growth Hormone Releasing HormoneSpecimen Type
SerumSpecimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | |
|---|---|---|---|
| Serum | Frozen | 90 days |
Clinical Information
Growth Hormone Releasing Hormone is a 44 amino acid peptide produced primarily by the hypothalamus. It is a neurohumoral control for adenohypophyseal secretion of Growth Hormone. Other hypothalamic hormones have a stimulatory effect on pituitary hormones, but Growth Hormone Releasing Hormone has no known effect on other pituitary hormones. Somatostatin is the inhibitory counterpart of Growth Hormone Releasing Hormone. Growth Hormone Releasing Hormone has structural similarities with the Secretin-Glucagon family of gastrointestinal hormones. Growth Hormone Releasing Hormone has been isolated from pancreatic islet cells and various cancer tumor cells.
Reference Values
Levels of IR-GH-RH
Baseline ranges: 5 - 18 pg/mL
Day(s) Performed
Monday through Friday
Report Available
10 to 14 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
83520