Glucose Tolerance test (2.5 hours)


See also glycocylated haemoglobin (HbA1c)

Patient Instructions:

Fast overnight.

Appointment Notes:

Preferable start early morning, to minimise length of fast for the patient

Included in Profiles:


Sample Report:

rep-gtt.pdf (Click to Download)

Sample Requirements:

A special appointment at Biolab is required; patient must attend Biolab for this test; Grey (fluoride oxalate) - 1 sample per time interval

Postal Samples Acceptable:



Glucose is dextrose powder from Thornton & Ross Ltd, Huddersfield HD7 5QH (tel: 01484-842217). It is derived from wheat and maize starch and the gluten content is less than 200 parts per million. (MH 9/6/03)

For further details please contact the laboratory at: