Laboratory Medicine

Test catalogue

Glucose Tolerance Test, 2hrs Non-Pregnant
Test Name Glucose Tolerance Test, 2hrs Non-Pregnant
Specimen Type / Requirements Container Type = Grey Top Minimum Testing Volume = 2ml plasma Tube must fill to at least ½ or greater of its vacuum capacity
Specimen Handling Collection Instructions: Collect sample in Grey top Container, free from hemolysis. Patient must be fasting for at least 12 hours. 75g glucose drink is given to the Patient once the fasting blood is drawned. Ensure patient finish ingesting drink within 5 minutes. 2Hrs after finishing the drink, a second sample is drawn. Blood glucose is taken fasting and 2 hours post ingestion. Write your initials, date and time of collection on the collection label. Stability: Stable at room temperature for 8 hours and 3 days refrigerated at 2-8°C. Transportation: Transport at room temperature ASAP. Laboratory Staff Instructions: Spin sample as soon as possible. Sample Rejection Criteria: Grossly hemolyzed samples, Unlabeled or Not Sufficient Quantity samples will be rejected
Required Documentation
Turnaround Time (TAT) 1 Hour	Test Utilization Routine
Reference Value 2h post < 7.8 mmol/L
Test Code GTT2	Methodology Spectrophotometric (Hexokinase method)
Testing Location SMH-Biochemistry	Other Information

Glucose Tolerance Test, 2hrs Non-Pregnant

Test Name

Glucose Tolerance Test, 2hrs Non-Pregnant

Specimen Type / Requirements

Container Type = Grey Top

Minimum Testing Volume = 2ml plasma

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Collect sample in Grey top Container, free from hemolysis. Patient must be fasting for at least 12 hours. 75g glucose drink is given to the Patient once the fasting blood is drawned. Ensure patient finish ingesting drink within 5 minutes. 2Hrs after finishing the drink, a second sample is drawn. Blood glucose is taken fasting and 2 hours post ingestion.

Write your initials, date and time of collection on the collection label.

Stability: Stable at room temperature for 8 hours and 3 days refrigerated at 2-8°C.

Transportation: Transport at room temperature ASAP.

Laboratory Staff Instructions: Spin sample as soon as possible.

Sample Rejection Criteria: Grossly hemolyzed samples, Unlabeled or Not Sufficient Quantity samples will be rejected

Required Documentation

Turnaround Time (TAT)

1 Hour

Test Utilization

Routine

Reference Value

2h post < 7.8 mmol/L

Test Code

GTT2

Methodology

Spectrophotometric (Hexokinase method)

Testing Location

SMH-Biochemistry