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Test Code Glucose 0, Glucose 120 Glucose Tolerance Test (2 points)

Specimen Requirements

Specimen Type: Plasma

Container/Tube: Grey Top (Sodium Fluoride/Potassium Oxalate)
Volume: 4.5mL
Minimum Volume: 0.5mL plasma
Collection Instructions: Patient should be fasted for at least 8 hours. Mixed specimen well to avoid clotting. Centrifuge within 2 hours.

Sample Stability

** Preferred temperatures for storage prior to and during shipping to NUH **

 

Specimen Type: Plasma (Stabilized with sodium fluoride/potassium oxalate)
Ambient: 2 day
Refrigerate: 7 days
Frozen: 3 months

 

Reference Interval

  Normal Impaired Diabetic
Fasting 3.0 - 6.0 mmol/L 6.1 - 6.9 mmol/L => 7.0 mmol/L 
120 min 4.0 - 7.7 mmol/L  7.8 - 11.0 mmol/L  => 11.1 mmol/L

 

Days and Times Performed

24 hours, TAT 1 day

Methodology

See individual test listings for Methodology

 

Enzymatic (Hexokinase / G-6-PDH)

Service Code

31205

Update

Last updated 28/10/2024

Specimen requirements collection instructions

Unacceptable Condition

 

Haemolysis NA
Icterus NA
Lipaemic NA
Others NA

 

Testing Laboratory

National University Hospital

Clinical Chemistry, 67724346