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...
Fasting for Triglyceride Test. If you are getting your blood tested for triglyceride levels, here are the rules for the same. Â» You will have to undertake a 12 hour fast before the blood test. In some cases the fasting period can also be up to 14 hours. Â» Only water is permitted during the fasting period.