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HelpTest Code LAB525 Growth Hormone, Serum
Additional Codes
45820
Reporting Title
Human Growth Hormone
Methodology
Beckman Coulter DXI 800 Immunoassay System.
Growth hormone (GH), produced by anterior pituitary, is involved in protein and glucose metabolism. Disorders include dwarfism, gigantism, and acromegaly. Various stimulation and suppression tests may be necessary to diagnose these diseases.
Performing Laboratory
OhioHealth Laboratory Services-RMH Special Testing
Specimen Requirements
Draw blood in a gold-top serum gel tube(s) from a fasting patient. Green-top [heparin] tube is also acceptable.
Note:
1. If multiple specimens are drawn, label each specimen with corresponding draw time and sequence number.
2. A speckled-top serum gel tube (s) or a plain, red-top tube(s) is also acceptable.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated | 2 days |
| Ambient | 8 hours | |
| Frozen | Indef |
Specimen Transport Temperature
Refrigerate OK / Amient NO / Frozen OK
Reference Values
Children 1-12 months: No Reference Range Established
Males: 0.01-0.97 ng/mL
Females: 0.01-3.61 ng/mL
GH secretion is episodic and pulsatile. Transient levels up to 40 ng/mL have been seen in healthy individuals. Between pulses, levels tend to be low.
Note: 1. Patients on GH therapy may develop antibodies which interfere with the assay.
2. Patients who have received mouse monoclonal antibodies may develop human anti-mouse antibodies (HAMA) which interfere with this assay.
Day(s) Test Set Up
Monday, Wednesday, Friday
Test Classification and CPT Coding
83003