Comparison group

Compare Thyroid function (TSH, FT4, FT3)

9 providers compared United Kingdom Thyroid

Ranked: best Thyroid function (TSH, FT4, FT3) tests

Tests are ranked by our independent editorial score. Click any test for the full review.

1
Top pick

Thyroid Test

Cheapest full 3-hormone thyroid panel

A three-hormone blood test measuring TSH, FT4 and FT3, the standard panel used to check for an underactive or overactive thyroid.

  • At-home test
  • Doctor reviewed
  • 3 biomarkers
  • Results in 1–2 days
2

Thyroid Function Blood Test

Three-hormone thyroid panel priced like a two-hormone test

Checks TSH, free thyroxine and free T3, the three core hormones used to assess thyroid function. Suited to people investigating symptoms like fatigue or weight change, or monitoring a known thyroid condition.

  • At-home test
  • Doctor reviewed
  • 3 biomarkers
  • Results in 2 days
8.7 / 10
£45.00 10% off via us
Buy now Full review →
3

Thyroid Blood Test

Full TSH, FT4 and FT3 panel at the group median price

Checks the three core thyroid markers, TSH, free T4 and free T3, used to help assess an underactive or overactive thyroid. Suited to anyone with possible thyroid symptoms who wants more than a single TSH reading.

  • At-home test
  • Doctor reviewed
  • 3 biomarkers
  • Results in 1–2 days
4

Baseline thyroid function blood test

Same two markers as rivals, but not the cheapest

A basic thyroid check covering TSH and FT4, the two hormones most commonly used as a first screen for an underactive or overactive thyroid. It suits anyone wanting a quick initial check.

  • At-home test
  • Doctor reviewed
  • 2 biomarkers
  • Results in 2 days
5

Thyroid Test

TSH/FT4 test beaten on price only by Monitor My Health

An at-home finger-prick test measuring TSH and FT4, two markers commonly used to check thyroid function. Suited to people with symptoms such as fatigue, weight changes or mood changes.

  • At-home test
  • 2 biomarkers
  • Results in 7 days
6

Thyroid Profile Blood Test

Matches Medichecks on price but tests one fewer marker

Measures TSH and free T4, the two core thyroid hormones, to help indicate an underactive or overactive thyroid. Suits anyone with symptoms like fatigue, weight change or mood changes who wants an initial thyroid check.

  • At-home test
  • Doctor reviewed
  • 2 biomarkers
  • Results in 2–3 days
9

Thyroid Function

Pricier than most 2-marker thyroid tests, no FT3 included

A blood test measuring TSH and FT4, the two hormones commonly used to assess thyroid function. Suited to anyone monitoring a known thyroid issue or investigating symptoms such as fatigue with a GP.

  • 2 biomarkers
  • Results in 3–8 days

Side-by-side comparison

Compare thyroid function (tsh, ft4, ft3) tests feature by feature across all providers.

Feature Monitor My Health Thyroid Test Medichecks Thyroid Function Blood Test Selph Thyroid Blood Test Thriva Baseline thyroid function blood test YorkTest Thyroid Test MyHealthChecked Thyroid Profile Blood Test Better2Know Thyroid Profile 1 Home Test Kit Better2Know Full Thyroid Profile Home Test Kit Bluecrest Wellness Thyroid Function
Compare Health Test score 89.1 /10 Cheapest full 3-hormone thyroid panel 86.6 /10 Three-hormone thyroid panel priced like a two-hormone test 86.3 /10 Full TSH, FT4 and FT3 panel at the group median price 79.8 /10 Same two markers as rivals, but not the cheapest 72.6 /10 TSH/FT4 test beaten on price only by Monitor My Health 70.4 /10 Matches Medichecks on price but tests one fewer marker 66.9 /10 Priciest 2-marker thyroid kit in its group 65.0 /10 Same three markers as rivals, priced far above them 63.4 /10 Pricier than most 2-marker thyroid tests, no FT3 included
Price £32.00 £45.00 £55.00 £54.90 £41.00 £45.00 £69.00 £199.00 £65.00
Biomarkers Count 3 3 3 2 2 2 2 3 2
At Home
Doctor Reviewed — —
Turnaround Min Days 1 days 2 days 1 days 2 days 7 days 2 days 1 days 1 days 3 days
Turnaround Max Days 2 days 2 days 2 days 2 days 7 days 3 days 1 days 1 days 8 days
Sample Type Blood Blood Blood Blood Blood Blood Blood Blood Blood
Collection Model At-home finger-prick At-home finger-prick or in-store clinic or home nurse visit or venous draw at clinic At-home finger-prick or Tasso EasyDraw or venous draw (clinic, nurse visit or own kit) At-home finger-prick or nurse-taken venous sample (£60 extra) At-home finger-prick At-home finger-prick, posted to lab At-home finger-prick, post to lab; also clinic £195 At-home finger-prick, post to lab; also clinic £250 Venous draw at local venue
Gender Focus Both Both Both Both Both Both Both Both Both
Subscription Available
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How we compare these tests

Our editorial team independently evaluates each test in this group using our structured scoring framework. Scores reflect accuracy, clinical credibility, value for money, turnaround time and reporting quality. Prices are updated regularly from provider listings. We may earn a commission if you purchase through our links — this never influences our rankings or scores.

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