Thyroxine Blood Test (T4)

You can attend our London clinic immediately with this blood test.

Blood tests include:

  • Doctors Referral
  • All Phlebotomy fees
  • ( your blood taken at our London clinic )
  • All laboratory fees
  • GP comments
  • Express Results
  • Money Back Guarantee

Thyroxine (T4) is the major secretory hormone of the thyroid. Only 0.03% of T4 is unbound and free for exchange with tissues. Thyroid function may be assessed with thyroid stimulating hormone (TSH) and free T4 measurements.