how long do i have to fast for a cholesterol blood test?
10847
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.
102158
a fasting blood glucose test (used to test for diabetes) – you fast for 8 to 10 hours before the test.
140413
What to know about fasting before your lab test. With certain blood tests, you may be instructed to fast for up to eight hours before your appointment. Fasting before a blood draw means you don't eat or drink anything except water.
29245
Fasting before blood tests Fasting means that you eat and drink nothing except water for 8 –16 hours before your blood test (12 hours optimal).
52826
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.
472974
For most tests, you will be told not to consume anything but water for eight hours leading up to the test. For a few tests, a 12-hour fast may be needed.
1371763
There is no preparation necessary for a full blood count. It can be done at any time of the day. However, if the blood test will be used not only for a blood count but for other reasons (e.g. glucose or cholesterol monitoring), you will be required to fast beforehand.
49441
You usually need to fast for 8–12 hours before a test. Most tests that require fasting are scheduled for early in the morning.
1009284
Common fasting blood tests an iron blood test (used to diagnose conditions such as iron deficiency anaemia) – you fast for 12 hours before the test.
784555
This test requires a 12-hour fast. You should wait to eat and/or take a hypoglycemic agent (insulin or oral medication) until after test has been drawn, unless told otherwise. Eating and digesting foods called carbohydrates forms glucose (blood sugar).
127825
Common fasting blood tests Examples of blood tests that require you to fast include: a fasting blood glucose test (used to test for diabetes) – you fast for 8 to 10 hours before the test.
824814
Other blood tests that require fasting Basic or comprehensive metabolic tests: Tests for blood sugar, electrolyte balance, and kidney function. Typically, people will be asked to fast for 10 to 12 hours before having one of these tests.
419758
Requirements Prior to the Test You are to remain on a normal, unrestricted diet for at least 3 days prior to test. You have had no acute significant illness for 2 weeks prior to test. Fasting is required for a period of 8-10 hours prior to the test. (No food or fluids such as tea, coffee or fruit juice.)
341938
With certain blood tests, you may be instructed to fast for up to eight hours before your appointment. Fasting before a blood draw means you don't eat or drink anything except water. Don't wait until the day of your blood draw to ask if you should fast. That could cause your appointment to be rescheduled.
682347
You will be asked to come to the test fasting — not having had anything to eat or drink for the previous eight hours. A fasting blood sugar will be obtained.
291546
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.
44793
How to prepare for this test. If you're asked to fast, you can't eat anything for 8-10 hours before the test. You should drink only water. If you are having an OGTT, you will need to drink a glucose drink provided after your fasting test, then stay for an additional few hours for further testing.