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Cheapest Total T4 Blood Test UK

All the thyroxine in the blood, bound and unbound.

Add to my panel

Cheapest test that includes it£249.00Premium Complete Blood Test at Goodbody Clinic, all-in with a vein draw

Tests compared3from 1 provider, checked 29 October 2026

What it measures

All the thyroxine (T4) in the blood, both the large part bound to carrier proteins and the tiny free part. T4 is the main hormone the thyroid releases.

Why people test it

Part of some full thyroid panels, alongside TSH and free T4.
Used to check how much hormone the thyroid is making, though free T4 is the more common test in the UK.

Typical range

Ranges vary by lab, method, age and sex, and your report shows the lab's own range.

Finger-prick or vein?

Offered as a vein draw only, as part of larger panels that need more blood than a finger-prick gives.

Carrier protein levels change in pregnancy and with oestrogen in the contraceptive pill or HRT, which moves total T4 without changing the free hormone.

Every Total T4 test, cheapest first

Cheapest first, whether the test is of Total T4 alone (marked "single-marker test") or a panel that includes it. Each price is all-in: the test and the cheapest way to have the blood taken that suits this marker, before any discount code.

Total T4 tests and their all-in prices
Test	All-in	Link
Premium Complete Blood Test Goodbody Clinic · 45 markers · checked 28 October 2026	£249.00 with a vein draw	View at Goodbody Clinic (opens in a new tab)
The Signature Well Man Blood Test Goodbody Clinic · 48 markers · checked 23 October 2026	£375.00 with a vein draw	View at Goodbody Clinic (opens in a new tab)
The Signature Well Woman Blood Test Goodbody Clinic · 49 markers · checked 24 October 2026	£375.00 with a vein draw	View at Goodbody Clinic (opens in a new tab)

Cheapest Total T4 test over time

Providers selling it

Goodbody Clinic

Other thyroid markers

Prices checked daily — always confirm on the provider's site. Not medical advice.

Price data from Blood Tests - Head to Head (CC BY 4.0).