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Can Biotin Affect Thyroid Blood Test?

How much biotin affects thyroid tests? In conclusion, the ingestion of 20 mg or more of biotin may lead to a clinically relevant thyroid assay interference. The clinicians must take this point in consideration before assessing the results of any thyroid function tests.

How much does biotin affect TSH levels? Two hours after ceasing 5 mg biotin, the levels of free T4, total T3, anti-TPO, anti-Tg, and anti-TSHR significantly increased (all P < . 001), while the level of TSH significantly decreased (P = . 005). Can supplements affect thyroid blood test? Some medications and supplements may also affect your results. This may be because they change your thyroid function. It may also be because they reduce your body’s ability to absorb thyroid hormone. Other drugs and supplements may just interfere with the test itself.

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Related Questions

Can Biotin Affect Thyroid Blood Test

Most commonly, biotin use can result in falsely high levels of T4 and T3 and falsely low levels of TSH, leading to either a wrong diagnosis of hyperthyroidism or that the thyroid hormone dose is too high.

How long should you stop taking biotin before thyroid test?

The ATA has recommended that patients stop taking biotin for at least 2 days before thyroid testing to avoid the risk of having a misleading test.

How long should I stop taking biotin before blood test?

Your health care practitioner may advise you to discontinue taking biotin supplements a few days before having lab tests done. If you are prescribed biotin for medical reasons, you should follow the directions of your health care practitioner.

What vitamins can affect thyroid test results?

Biotin supplements, for example, can interfere with thyroid function tests by showing falsely low TSH levels. The ATA recommends you stop taking biotin for at least two days before a thyroid test to avoid misleading results.

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