How much biotin will affect a thyroid test? 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.
What supplements affect TSH levels? A study published in 2018 in the Indian Journal of Endocrinology and Metabolism found that vitamin D supplements improved TSH levels in subjects with hypothyroidism as well as thyroid antibodies in people with autoimmune thyroiditis. You can get vitamin D from fortified milk, yogurt, and orange juice.
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).
Related Questions
Can Biotin Affect Tsh Results
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.