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Ways Biotin Can Skew Test Results

Ways Biotin Can Skew Test Results

Bio-fuel, biotin supplements and biosphere: Which “bio” does the Food and Drug Administration (FDA) recommend you avoid if you want to get a proper reading on a specific heart enzyme, or thyroid hormone test? The answer is vitamin B7, also known as the water-soluble vitamin biotin. It’s found in dietary supplements used for hair, skin and nail growth, as well as multi- and some prenatal vitamins.

The FDA wants you to know that too much biotin in your system can result in a falsely low result on a blood test for troponin, a clinical biomarker that helps in diagnosis of a heart attack. And according to other studies, high doses of biotin can skew lab test results for thyroid hormones, which can lead to an over-diagnosis of Graves’ disease or hyperthyroidism.

The FDA says 30mcg a day of biotin is Adequate Intake for adults and essential for good health of the skin, nails and the liver. Biotin deficiency is rare in healthy people. Women who are breastfeeding need to take supplements (ask your doc) to assure proper fetal development and infant health. For most people, if you have two to three daily servings of 100 percent whole grains, eat plenty of nuts like walnuts, pecans and almonds, and have at least a couple of servings of wild salmon and ocean trout every week, you don’t need biotin supplements. However, if you’re taking antibiotics or meds for epilepsy, ask your doctor if a supplement is a good idea.

What is the maximum daily dosage of biotin?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
Most individuals get adequate amounts of biotin through their diet and do not need supplementati...
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Who should not take biotin?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
Biotin has been shown to be essentially non-toxic and safe at doses up to 10 mg. daily. Anyone w...
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Is boitin good to use for hair growth?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
Biotin may help boost hair growth: Although it's weak, there is some evidence that biotin (vitam...
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What should I avoid while taking biotin?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
Biotin has no known adverse interactions with any medications, supplements, food, or beverages. ...
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