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Laboratory: Clinical Biochemistry  (SPECIAL CHEMISTRY)
Test Name:
GLUCOSE TOLERANCE TEST FOR GROWTH HORMONE SUPPRESSION - (S)
Test Code: GGH
Clinical Information:
Description:  Non-suppressible GH secretion during an oral glucose tolerance test is used for diagnosis of acromegaly and to document remission after surgery.
 

This procedure is performed in the Endocrinology & Metabolism Clinical Investigation Unit.

Collection Devices:
Serum tubes with no gel are also acceptable.
Specimen Required:


Serum: 2.0 mL
Pediatric Serum: 0.6 mL

Follow lab instruction on the Glucose GH Suppression Requisition Form.
Referral:
Requisition:
Reference Values:
Reference Intervals:
AgeInterpretation
All

Growth Hormone: Suppression <1 ug/L is considered a normal response. Suppressed levels do not exclude acromegaly (false negative rate up to 50%). False positive may be observed in puberty and patients with diabetes, liver disease, kidney disease or anorexia nervosa.

 

Insulin: Response may vary greatly, may be useful in assessing therapy effectiveness.


 

 

Availability:
Within 1 Week
See Also:
More Information: