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Growth Hormone

Laboratory:Clinical Biochemistry
Test Code:GH
Specimen Types:Blood
Container Types:
SST
Lithium Heparin (with Gel)
Collection & Request Instructions:

Endocrine consultation suggested.

Stimulation tests—Hypoglycaemia, Exercise
Suppression test—Glucose load

Random blood samples are of limited value in diagnosis because of variation with food, exercise and stress.

Transport Instructions between Sites and/or Laboratories:On Ice
Assay Frequency:Twice weekly
Additional Notes:

Assay performed on Roche cobas e801(ECLIA)

Male Reference Interval:  < 2.47 ug/L

Female Reference Interval:  0.13 - 9.90 ug/L

(Ref: Roche Elecsys GH kit insert, based on 5th and 95th percentile of 299 normals).

Note: Biotin supplementation may cause falsely low results due to interference with the Growth Hormone assay. If the patient is known to be taking Biotin, interpret results with caution and contact the Chemical Pathologist (03) 90763118 if further discussion is required.