Fasting blood test

A fasting blood test is a blood sample taken from a person who has not eaten for 8 to 12 hours. Usually, the blood sample is taken early in the morning.

Examples of blood tests that may be done after a period of fasting include fasting blood sugar (fasting plasma glucose) and lipid profile (cholesterol and triglycerides).

Last Updated: July 14, 2009

Author: Christine Wendt, R.D., L.D.

Medical Review: Caroline S. Rhoads, MD - Internal Medicine & David C.W. Lau, MD, PhD, FRCPC - Endocrinology & Metabolism

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