Several tests performed by Spectrum Health Laboratories and our Reference Laboratories (Mayo Clinic Lab) require and recommend fasting.
Please check the Lab Catalog prior to sending your patient to a draw site or sending a patient’s specimens to the lab. Help remind patients to arrive fasting if fasting tests are required.
Spectrum Health Laboratories recommends
No caloric or caffeine intake for 8-12 hours prior to testing. Do not eat or drink anything except normal amounts of plain water. This also includes no smoking, chewing gum, candy, cough drops, etc. Some tests also require no alcoholic beverages for 24-48 hours prior to testing.
Take normal dosages of medications, unless the provider has instructed otherwise.
Results may be inaccurate if fasting was not done prior to the test and may lead to improper diagnosis or treatment. Testing will need to be repeated if patient was not fasting properly before testing.
updated: 12/27/2021
