FT4 (Free Thyroxine)

🔍 Overview

The FT4 (Free Thyroxine) test measures the level of free thyroxine hormone in the blood. FT4 is the active, unbound form of thyroxine produced by the thyroid gland and plays a vital role in regulating metabolism, energy levels, heart rate, and body temperature.

📋 Test Summary

This test helps to:

• Evaluate thyroid gland function

• Diagnose hypothyroidism and hyperthyroidism

• Assess hormonal imbalance affecting metabolism

• Monitor thyroid disorders and treatment response

• Investigate symptoms like weight changes, fatigue, hair loss, and palpitations

✔ Measures biologically active thyroid hormone
✔ More accurate indicator than total T4 in many cases

⏱ Reports Within: 6 Hours
🧪 Sample: Blood
👶👩👨 Age: All Age Groups
🚻 Gender: Male and Female
🍽 Fasting: Not Required