Aids in diagnosis of growth hormone excess or deficiency disorders.
Quantitative Chemiluminescent Immunoassay
Patient must be fasting and at complete rest for 30 minutes before blood collection
Plasma separator tube or serum separator tube. Also acceptable: Green (sodium or lithium heparin), lavender (EDTA), or pink (K2EDTA).
Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.4 mL)
Frozen. Also acceptable: Refrigerated.
Tissue or urine. Grossly hemolyzed or lipemic specimens.
After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 2 months
Effective May 20, 2013
|0-6 years||0.10-6.20 ng/mL||0.10-6.20 ng/mL|
|7-17 years||0.05-11.00 ng/mL||0.05-17.30 ng/mL|
|18 years and older||0.05-3.00 ng/mL||0.05-8.00 ng/mL|
This Growth Hormone assay is now standardized to the Recombinant Second International Standard (IS): 98/574. Growth hormone results read approximately 25 percent lower than with the previous standards (FirstIS: 80/505). Reference ranges have also been modified according to the assay manufacturer.
|Component Test Code*||Component Chart Name||LOINC|
- GH testing
- Growth Hormone Stimulation
- growth hormone, Serum
- Human Growth Hormone
- Somatotrophic Hormone