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Glucose Tolerance Test (3 Specimens), plasma (Antenatal) [OGTT (3 samples for antenatal only)]

Test Code:

BC0146

Synonym(s):

Specimen Container

​Sodium fluoride tube (Adult)

Specimen Requirement

​Whole Blood
2 mL

The OGTT should be preceded by at least 3 days of adequate carbohydrate diet. It should be performed in the morning after the patient fasted at least 10 hours(but no longer than 16 hours). Adult: 75g load.

Invert blood 5 times after blood collection ensures the anticoagulant is well mixed with the blood. This will ensure results are reliable.

Specimen Storage / Transport

OGTT timed specimens may be sent together or separately to the laboratory.

Method

 

Orderable as STAT?

No

Turn Around Time

​Average 2 hrs (1 - 3 hrs)

Reference Value(s)

​GDM
Fasting glucose <= 5.0 mmol/L
1-hour glucose <= 9.9 mmol/L
2-hour glucose <= 8.4 mmol/L

Testing Laboratory Location

KKH

Laboratory

Clinical Chemistry

Contact Number

6394 1383

Day and Time Performed

​Mon to Fri: 0800 hr - 1730 hr
Sat: 0800 hr - 1230hr

Orderable on CPOE?

Yes

Additional Information

Critical Result:
OGTT (fasting) - > 10mmol/L
OGTT (2 hr) - > 15 mmol/L

Change History Notes

Others

Keywords

Glucose Tolerance Test (3 Specimens), plasma (Antenatal) [OGTT (3 samples for antenatal only)] BC0146 GDM
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