Can I have stevia in my coffee before a fasting blood test?

Can I have stevia in my coffee before a fasting blood test?

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  1. I recently came across a study , reported by the American Diabetes Associacion, where a group of 20 obese patients were monitored for their insuline response to a dose of Stevia. The sample group was small ( 20 people ) and the duration was short ( 1 to 2 weeks ) , but the results show that was no insuline response after the administration of stevia. Despite this , I would still recommend you refrain from using stevia, prior to the fasted blood test. The blood tests have been standardized after millions and millions of tests, over the course of decades. The standard has always been that fasting means a minimum of 8 hours with no food or liquids that can affect your insuline, etc. Only water, unsweetened tea and unsweetened coffee are allowed. Throwing any other substance in the mix, might cause unnecessary confusion with the lab or your physician. Trust me, lab techs and doctors are not allways up to par with all the products or research out there. Just answering this question got me wondering about the effects of stevia on other items of a blood test, other then glucose and insuline. Could it have an effect on the hormones? Or affect the hematocrit levels? We simply don’t have enough experience with this product yet. All we know for sure is that it is safe for consumption by humans and , so far , there haven’t been any problems with it , at the recommended use. Another thing I have noticed is that some brands of stevia, actually use a combination of stevia and other sweeteners. Supposedly , for a better taste, but could also be a cost cutting move. There are a few of the other artificial sweetners that do cause an insuline response , so the combination of sweetners might still affect your results . Same might go for the fillers and other ingredients in the stevia product you want to use. Considering all this, I would recommend NOT to use it in your coffee prior to the sample taking. Go for unsweetened coffee instead. Cheers.

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  2. This is an interesting question.
    Doctors and labs usually request patients to fast completely for 8 or more hours before routine lab tests. Yet water is usually allowed despite the theoretical concern that ingested water could “dilute” some or all of the lab values, especially hematocrit, a measure of red cell concentration.
    It seems very unlikely that black coffee could affect many common tests, such as electrolytes (blood minerals) or thyroid, kidney or liver function tests. Yet an effect on glucose (sugar) or lipids (fats, such as cholesterol) is at least conceivable.
    Ask the doctor: What blood tests require fasting? – Harvard Health
    Similarly, it’s hard to conceive a mechanism whereby stevia would alter results.
    But as so often in Medicine, a firm answer can not be given in the absence of scientific experimental data and I cannot locate anything convincing.
    Conclusion: most likely neither black coffee nor stevia would affect your lab test results. But to be absolutely sure, you would have to abstain.

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  3. I actually wouldn’t even recommend drinking coffee for a fasting blood draw, even less so the addition of sugars.
    Whenever you get an order for fasting blood work, it means fasting. No eating and no drinking for 12–14 hours before you have blood drawn. Only water is acceptable, and even then it should be in moderation. Coffee is not acceptable, as it still contains organic content from the beans and caffeine. It can provide inaccurate results that your doctor may interpret and treat, when you don’t really have anything wrong.
    Please refrain from drinking coffee before coming to the lab to get drawn. Coffee can wait.
    Hope this helps.

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  4. Please don’t have either!
    The coffee itself has dissolved vitamins and minerals that would alter your fasting values, not to mention how coffee alters metabolism.
    There is also the possibility of the stevia causing a decrease in blood sugar by stimulating insulin production. This is a terribly controversial topic without crystal clear scientific results, but the possibility is enough reason to avoid it when fasting for lab results. You and your doctor are best served by an unaltered picture of your labs.
    Skip the coffee, drink a small amount of water if you must, and enjoy a victory coffee after your blood draw.

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  5. No you cannot even take black coffee or tea before fasting blood test . Fasting Glucose test requires minimum 10 and maximum 12 hours of fasting you can only take water in this fasting period.
    Please up vote if you find my answer helpful.

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  6. Well, you can put stevia in your coffee. As long as you don’t drink your coffee.
    While it won’t add sugar to your blood stream, coffee will affect the hormones in your body that control digestion and your sugar regulation.
    Coffee, and chewing gum, should be avoided. While water is acceptable, it should not be in large amounts.

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  7. “Fasting” is generally taken to mean that nothing but water and medications can be taken for 8 to 12 hours before the tests are drawn. Fluids other than water, food, smoking, exercise, even chewing sugarless gum can all have an effect on some blood tests.

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  8. Probably not. Ask your Drs office or the testing lab. Some tests have shown that the body actually tends to react to some artificial sweeteners the same as it does to real sugar. Not sure about Stevia….just call and ask. Different labs can have different requirements.

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  9. If directions before fasting blood lab sample are not to drink anything other than plain water then that is what you should do unless you speak with the person that has ordered the lab test and clear it before so that it can be taken into consideration when evaluating the results.

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  10. Q: Can I have stevia in my coffee before a fasting blood test?
    A: Depends on the blood test. Hemoglobin A1c won’t be thrown off by it, according to the lab techs I’ve talked to. Some blood tests don’t want you to have any caffeine in the fasting period. Those are tough.

    Victor Allen’s

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  11. Hello and thanks for the A2A!
    As some of the other answers suggested doctors don’t recommend drinking anything before a blood test. Even consumption of too much water can reflect on certain values. I would not drink coffee before any blood or urine test. Just to make sure, ask your doctor.
    I hope that information was helpful to you.

    Eight O’Clock

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