Glucose Tolerance 75g 2hr, Blood - Saskatoon
Discipline
Biochemistry
Overview
Description
- Patients are recommended to fast for 8 to16 hours.
Specimen Information
Specimen types accepted
- Plasma
- Serum
Specimen collection container
- Preferred collection container: Light Green (Lithium Heparin gel)
- Alternative collection container: Gold (gel)
Collection procedure
- Collect fasting glucose
- If patient is an adult, administer 75 gram glucose drink. If patient is ≤ 12 years old, calculate the correct dosage of glucose drink to give.
- Patient should remain at collections site and rest during testing period. They should not eat or drink anything other than water during the testing period.
- Collect blood sample 2 hours after the patient has finished the drink
Required volume
- Optimal volume: 4.5 mL full collection tube
- Minimum volume: 1.0 mL
(Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory/reflex testing. In some situations, a minimum volume may require a second collection.)
Transport and stability
- 1 hours on cells
- 3 days at 2 - 8°C
Rejection criteria
- Specimens received where the proper collection protocols were not followed
- Pathology and Laboratory Medicine Acceptance and Rejection Criteria
Performance
Methodology
- Hexokinase method (photometric)
Days/times performed
Availability |
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| Testing site |
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Maximum laboratory time
- In Hospital reported within 2 hours
- Community urgent and inter-hospital reported within 4 hours
- Community routine reported within 24 hours
- Critical results ≤ 2.5 and ≥ 25.0 mmol/L will be phoned
Specimen retention time
- 3 days
Last Updated: October 24, 2024