For the study, researchers compared cholesterol testing results of 300,000 people from Denmark, Canada, and the U.S. In both the U.S. and Canada, fasting for eight hours before a test is required. In Denmark, however, it is not.
Patients who are scheduled for a lipid profile test should fast (except for water) for 12-14 hours before the blood sample is drawn. If the patient's cholesterol is to be fractionated, he or she also should avoid alcohol for 24 hours before the test. http://www.healthatoz.com/healthatoz/Ato...
Please ensure that you have nothing to eat or drink (other than water) for 8-12 hours prior. to presenting for the test. It is recommended that you fast for 8 hours for a âFasting glucoseâ. and 10-12 hours for âcholesterol/lipidâ testing. 2. Do not fast for any longer than 12 hours, as this may affect your test. 3. Ensure that you drink plenty of water to stay well hydrated.