Thyroid Labs, Decoded

TSH, free T4 and antibodies explained, with the pitfalls that cause misdiagnosis.

Taught by Farhan Tahir, MD ·

7 min

THE LESSON

7 MIN
IN THE STUDIO
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ANIMATED EXPLAINER · THYROID LABS
STEP 1 OF 4
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TSH rises as T4 falls.

In this lesson

• The TSH feedback loop

• Overt versus subclinical disease

• What antibodies add

• Biotin, illness and other pitfalls

• Monitoring on levothyroxine

Educational content only. It does not replace advice from your own clinician.

Educational content only, written and reviewed by Farhan Tahir, MD. It does not replace individual medical advice. For sudden chest pain, trouble breathing or stroke symptoms, call 911.

AT A GLANCE

Topic

Tests

Length

7 min

Reviewed by

Farhan Tahir, MD

Questions about your own care?

Dr. Tahir’s team offers consults through Youthful Medicine.

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