Do I need to fast before my test?
Although not all blood tests call for fasting prior to blood collection, there are certain types of tests for which fasting is necessary to ensure results are clinically relevant. Types of blood tests that do require fasting include: glucose test, glucose tolerance test (GTT), Lactose and Xylose tolerance tests, cholesterol test, HDL/LDL cholesterol, Triglycerides , Lipoprotein phenotyping and homocysteine.
For further information pertaining to fasting requirements and other preparation, please refer to Patient Preparation Instructions and Test Requirement Manual, or call our Client Services Department at: (416) 449-2166 and press 1 .