Modification Reference values
Test code: 4590-4598
PREVIOUS
Reference values
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CURRENT
Reference values
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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.
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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.
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