Non-fasting results on intended fasting laboratory tests will alter their interpretation and diminish their utility. Please help remind patients to arrive fasting if fasting tests are required. Spectrum Health Regional Laboratory recommends no caloric or caffeine intake for at least 8 hours. The patient is not to drink (other than water), eat, smoke, chew gum, candy, cough drops, etc. for at least 8 hours prior to their blood tests. Please check the Laboratory Catalog prior to sending your patient or patient’s specimens to the laboratory.