WebSep 11, 2024 · A. Actually, fasting affects the results of very few blood tests. For example, measurements of kidney, liver, and thyroid function, as well as blood counts, are not … WebJun 27, 2016 · Here's how to do the test right: Watch what you eat. Two days before and the day of the fecal occult blood test, cut out all red meat, beets, broccoli, cantaloupe, carrots, cauliflower, cucumbers ...

Fasting Before a Blood Test: How Long to Fast and More

WebMar 8, 2024 · Fasting means you should not eat or drink anything except water for up to several hours or overnight before your test. This is done because nutrients and ingredients in food are absorbed in the bloodstream. This can affect certain blood test results. The length of fasting can vary. eiffel tower in november

How to Prep for a Fecal Occult Blood Test - Consumer Reports

A:Don’t drink anything but water. Coffee contains caffeine. It’s also a diuretic, which removes water from your body. Many people think coffee counts toward your fluid requirements. However, it makes you urinate more, which can affect some of your lab results. So, get your blood test done, then get your cup of coffee! See more A:Typically, you should fast before bloodwork anywhere between 10 and 12 hours. Usually, people choose to do blood tests first thing in the morning. This way, you can fast overnight, when you generally don’t eat anyway. See more A:Yes. You can drink as much water as you want, but it should be plain. Avoid lemon-flavored and carbonated waters, as well as teas until … See more A:Let your doctor know so you don’t end up doing a test unnecessarily. If you’ve already gone for the test without fasting, and the results come back normal, then you’re most likely OK. But if results come back abnormal, that … See more A:You can take over-the-counter and prescription medications unless your doctor advises you otherwise. On that note, it’s definitely a good idea to tell your doctor about all medications and supplements you’re … See more WebDec 28, 2016 · Instructions: Patient is advised not to eat or drink anything except water for 8 to 10 hours before a fasting blood glucose test. Effect on Lab Results: If you eat sugar … WebMar 16, 2024 · Check with the healthcare provider who ordered the blood work to see if fasting is necessary, and if so, do not eat for to eight to 12 hours before the test. It's fine … eiffel tower inspiration