Lab Tests Health Packages Find a Lab

Thyroxine (T4)

Measures total thyroxine (T4) in blood, including hormone bound to proteins plus the small free portion that can affect body cells.

฿156.00

Measures total thyroxine (T4) in blood, including hormone bound to proteins plus the small free portion that can affect body cells.

Blood

15 min at lab

Results: 1 day

Typical Use

Used with TSH to assess suspected thyroid overactivity or underactivity, and to investigate abnormal thyroid screening results or symptoms like weight change and fatigue.

Preparation

Wear clothing that allows easy access to your arm

Arrive well-hydrated

Continue regular medications unless advised otherwise by your doctor

Back to Tests

We use analytics cookies to understand how the site is used. They are only set if you accept, and we never send your test or package details to any analytics service. Privacy Policy