Do you need to fast for a thyroid blood test?
Learn whether fasting is required for thyroid blood tests including TSH, T3, T4, and thyroid antibodies. Get expert guidance on test preparation.
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Learn whether fasting is required for thyroid blood tests including TSH, T3, T4, and thyroid antibodies. Get expert guidance on test preparation.
Learn how long to stop biotin before thyroid testing, why biotin interferes with lab results, and how to ensure accurate thyroid function tests.