how long should you fast for a lipid panel?
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However, if the test is drawn as part of a total lipid profile, it requires a 12-hour fast (no food or drink, except water). For the most accurate results, wait at least two months after a heart attack, surgery, infection, injury or pregnancy to check HDL levels.
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Typically, fasting for 9-12 hours (drinking water only) before having your blood drawn is required, but some healthcare practitioners allow non-fasting lipid testing. In particular, children, teens and young adults (ages 2 to 24) may have testing done without fasting.
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The truth is, your cholesterol can be tested without fasting. In the past, experts believed fasting ahead of time produces the most accurate results. This is because your low-density lipoproteins (LDL) — also known as “bad” cholesterol — may be affected by what you've recently eaten.
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It depends on the test. Fasting for a lab test typically lasts eight hours. Your doctor should give you any special instructions related to your tests, including fasting requirements.
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Generally you're required to fast, consuming no food or liquids other than water, for nine to 12 hours before the test. Some cholesterol tests don't require fasting, so follow your doctor's instructions.
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You usually need to fast for 8–12 hours before a test. Most tests that require fasting are scheduled for early in the morning.
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In preparation for the test, a doctor may instruct a person to fast for up to 12 hours before the test. The doctor's office typically receives the results within a day.
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With a fasting triglyceride test, a person is asked to fast for between 9 and 12 hours before having blood taken and tested. Non-fasting tests do not require a person to fast beforehand. For the last few years, researchers have been looking at the benefits of non-fasting triglyceride tests.
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March 24, 2020. This article waslast modified on June 16, 2020. Depending on the reason for testing, you may need to fast (drinking nothing but water) for at least 8 hours prior to the blood draw.
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How long do I have to fast before the test? You usually need to fast for 8–12 hours before a test. Most tests that require fasting are scheduled for early in the morning.
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If Triglyceride result is >400 mg/dL, then Direct LDL will be performed at an additional charge (CPT code(s): 83721). Fasting is not required prior to collection of a lipid panel.
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Patient Instructions If your doctor has requested that a fasting blood test be performed, fasting is generally overnight. 12 hours is the optimal fasting period. Fasting longer than the recommended time could compromise your results. You may be advised to defer the test to another day.
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Fasting (except water) is required for 10 to 12 hours before the test. How the test will feel: When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing.
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How long do I have to fast before the test? You usually need to fast for 8–12 hours before a test.
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Fasting (no food, but continue to give water) for at least 12 hours before the blood is drawn should eliminate most effects on blood tests that are caused by diet. This is a good idea for all dogs, as a recent meal can also cause lipemia, making blood test results less reliable (see below).
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Fasting Requirements Fasting means that, with the exception of water, you refrain from eating or drinking for a minimum of 8 hours (10 to 12 hours is preferable) prior to the draw.
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You usually need to fast for 8–12 hours before a test. Most tests that require fasting are scheduled for early in the morning. That way, most of your fasting time will be overnight.