Dr. Shapiro's Hair Institute • 1-561-414-4509

T-4 Blood Test

T-4 (Thyroxine), Free & Total T-4 (thyroxine, or tetraiodothyronine) is an hormone produced by the thyroid. It is well known that thyroid imbalances can contribute to hair loss. Both T-4 & T-3 are related to metabolism, growth, and the fight or flight response. Most of the T-4 in blood is attached to a protein - this bound T-4 does not affect the functioning of the body; less than 1% of T-4 is unattached or "free". Measuring the amount of free T-4 helps diagnose thyroid disorders which can contribute to hair loss.

See complete list of recommended tests.

Return to Glossary A-G, Glossary H-S, Glossary T-Zor glossary index

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Delray Beach Hair Transplant & Restoration Clinic
5050 W. Atlantic Ave.
Delray Beach, Florida 33445
561.499.2111
561.414.4509

Hollywood Hair Transplant & Restoration Clinic
3990 Sheridan Street #201
Hollywood, Florida 33021
561.499.2111
561.414.4509
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