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Glucose tolerance test

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Sample type: Plasma

Test name: Glucose tolerance test a.k.a. glucose tolerance test, ogtt, gtt

Condition / Indication: Diabetes

Special precautions & notes: None.

Reference range: Venous plasma glucose concentration (mmol/L) post 75g glucose: Impaired fasting glucose: Fasting 6.1 - 6.9 and 2hrs <7.8, Impaired glucose tolerance: Fasting <7.0 and 2hrs 7.8 - 11.0, Diabetes Mellitus: Fasting ≥ 7.0 or 2hrs ≥ 11.1.

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Ideal volume (mL): 2 mL

Referred outside NBT for analysis? No

Discipline: Clinical Biochemistry

Section: Automated Laboratory

Turnaround time: 8 hours