Pathology Handbook

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Recent changes for Glucose Tolerance Test
Date	Field	Changed From	Changed To
24th October 2024	Registration Instructions	If a patient vomits within one hour of post glucose load register the fasting glucose sample with routine test code FGF.	If a patient vomits within one hour of post glucose load register the fasting glucose sample with routine test code FGF. If a patient vomits post 60 minute mark continue with the test and register GTT.

Date

Field

Changed From

Changed To

24th October 2024

If a patient vomits within one hour of post glucose load register the fasting glucose sample with routine test code FGF.

If a patient vomits post 60 minute mark continue with the test and register GTT.

Alternative Names:

GTT
OGTT

Laboratory:

Clinical Biochemistry

Test Code:

GTT

Specimen Types:

Plasma

Container Types:

Fluoride Oxalate

Collection & Request Instructions:

Fast for > 8 hours pre procedure
Three (3x) collection tubes required

Record date, time on specimen tubes, and glucose dose on request form.

Transport Instructions:

Room Temperature

Assay Frequency:

Daily