Research has suggested that fasting may not be necessary before all cholesterol and triglyceride tests. That is why people are asked not to eat for 9–12 hours before the test, which helps give an accurate profile of the amounts of these fats in the blood. The amounts of these fats will increase if a person has recently eaten food. low-density lipoprotein cholesterol, also known as “bad” cholesterol.high-density lipoprotein cholesterol, also known as “good” cholesterol.High cholesterol can lead to an increased risk of certain health conditions.īlood cholesterol tests, also known as lipid profiles, assess the quantities of fats in the blood. Blood cholesterol testsĬholesterol is a fatty substance in the blood. The results help a doctor diagnose or rule out diabetes. A person will typically fast overnight and do the test early in the morning.įasting helps ensure that the blood test records an accurate measure of fasting blood sugar levels. It is important that an individual has not had anything to eat or drink other than water for 8–10 hours before a fasting blood glucose test. A fasting blood glucose test measures levels of sugar in the blood to see whether they are healthy. The types of blood tests that require fasting are: Fasting blood glucose testĪ fasting blood glucose test can help diagnose diabetes.ĭiabetes is a condition that can lead to excessive amounts of sugar in the blood. Some blood tests require fasting to provide accurate results, while others do not. Whether someone needs to fast or not before a blood test depends on the type of blood test they need to undergo.
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