Growth Hormone Suppression Fasting

Ordering Info & Methodology

Test Code

Cerner Synonyms

GHSF

GH Suppression Fasting, Growth Hormone, Suppression Panel, Growth Hormone Provocative Test, HGH (Human Growth Hormone), Human Growth Hormone, Somatotrophic Hormone, Somatotropin

Turn Around Time

Methodology

Analyzed within 2 days of receipt when received Monday-Friday.

Sandwich immunoassay, electrochemiluminescence, Roche Cobas

Ordering Guide

GHSF, GHS30, GHS1, GHS90, GHS2

Specimen Requirements

Sample Type

Collection Container

Alternate Collection Containers

Serum

Gold

Red

0.5 mL

Add on stability
This is the length of time after sample collection that this analyte is stable. Test can be added to a previously collected sample if the time since collection is less than the add on stability time.

Minimum Volume

Add On Stability

Collection and Shipping Requirements

Refrigerate. Send on ice pack.

Reference Intervals

Female Reference Interval

Age Category	Reference Interval	units

Male Reference Interval

Age Category	Reference Interval	units

Additional Notes

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Measurement Uncertainty (MU)
Every laboratory value is an estimate of the true concentration of substance. MU is the 95% confidence interval around that estimate. 95% of the time, the true concentration will be within the range of the reported value ±MU. This value is based on analytical variability (precision) and does not reflect other factors such as sample collection and handling which may also affect the result.

Example

Reported sodium = 140 mmol/L
Sodium MU = 1%
Expanded uncertainty = 140 mmol/L ± 1% or 140mmol/L ± 1.4 mmol/L
Interpretation - the true value of sodium in the sample is in the range 138.6-141.4 mmol/L, with 95% confidence.

Measurement Uncertainty

Growth Hormone Suppression Panel includes

GHSF - Fasting Growth Hormone Suppression includes glucose

GHS30 - 30 minutes Growth Hormone Suppression

GHS1 - 1 hour Growth Hormone Suppression

GHS90 - 90 minutes Growth Hormone Suppression

GHS2 - 2 hour Growth Hormone Suppression

75g glucose drink given after fasting sample is drawn

Suppression of growth hormone below 0.5µg/L with glucose loading is considered adequate suppression, and makes the diagnosis of growth hormone excess (acromegaly) less likely.