Friday, October 4, 2013

STIMULATION OF GROWTH HORMONE (GH) (x SAMPLE), SERUM

Modification Reference values

Test code: 4590-4598
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Reference values
CURRENT 
Reference values

Basal             : < 10 µU/mL
Stimulated samples: > 20 µU/mL
Growth hormone stimulation tests should induce a
peak of greater than 14 µU/mL;lower values suggest growth
hormone deficiency. 
For children, some experts consider values of 14-20 µU/mL
are equivocal and only peak values of greater than 20 µU/mL
as truly normal.
For suppression testing, normal subjects have growth hormone
concentrations of less than 1 µU/mL within 2 hours of
ingestion of a 75 or 100 gram glucose dose. Patients with
acromegaly fail to show normal suppression.

Baseline:
MEN  :  Less than  9 mUI/L
WOMEN:  Less than 24 mUI/L
(*conversion factor: mUI/L / 3 = ng/mL)
Functional test:
GRF, Exercise, Exercise + Propranolol, Exercise + L-DOPA, L-DOPA, Clonidine,Arginine or Insulin:
In all tests, must be obtained a difference between the maximum and baseline at least of 14 mUI/L.




1 comment:

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