{"id":101,"date":"2018-08-21T04:43:41","date_gmt":"2018-08-21T04:43:41","guid":{"rendered":"http:\/\/knowyourblood.com\/?p=101"},"modified":"2018-08-21T04:43:41","modified_gmt":"2018-08-21T04:43:41","slug":"a-guide-on-the-importance-of-fasting-before-getting-a-blood-test","status":"publish","type":"post","link":"https:\/\/knowyourblood.com\/a-guide-on-the-importance-of-fasting-before-getting-a-blood-test\/","title":{"rendered":"A Guide on the Importance of Fasting Before Getting A Blood Test"},"content":{"rendered":"

Fasting for Blood Tests<\/span><\/h1>\n

Many blood tests require that you fast for a period of time before you take the test.<\/span><\/p>\n

The amount of time you will have to fast for varies. Some tests only require you to fast for 2 to 4 hours, while others will require you to not eat any food for 24 hours prior to the test.<\/span><\/p>\n

While most tests will ask you to refrain just from eating foods, a few will also require that you don’t consume any supplements or nutrients that are related to the test. For example iron blood tests require you to stop taking any iron supplements.<\/span><\/p>\n

Why is it necessary to fast before blood work?<\/span><\/h1>\n

So the reason this step is so important is because your body needs to be in as much of a nonreactive state as possible.<\/span><\/p>\n

If you take certain tests soon after you’ve eaten then the test results will not provide accurate readings because your body has adjusted the levels of certain body levels to accommodate the digestion and circulation of nutrients, or anti-nutrients, that were introduced into your body from food and drink.<\/span><\/p>\n

If you fail to follow the fasting protocol your test results could show that you have a condition that you don’t in fact have. No one wants to be treated for high cholesterol when they in fact only had high cholesterol readings because of some food they ate<\/span><\/p>\n

What do I have to avoid when I fast? Is there anything I am allowed to consume?<\/span><\/h1>\n

All foods and many medications can cause inaccurate blood readings. Some tests will also have you avoid water intake aka “dry fasting.”<\/span><\/p>\n

If your test requires you only drink water, then you ONLY drink water.<\/span><\/p>\n