Best Free T4 Tests in 2026

Compare free T4 tests by price, collection options and additional tests. Each includes free T4.

67 free T4 tests from 30 providers

Sorted by: Lowest pricePrice

ProviderMarkers IncludedCollection ⓘPrice

$14

Anabolic Insights T4, Free (Direct)

free T4

Lab visit at Labcorp

$14

1 more matching option from Anabolic Insights

$39

Anabolic Insights TSH + Free T4

free T4

+ TSH

Lab visit at Labcorp

$39

$16.65

DrSays Free T4 (Free thyroxine)

free T4

Lab visit at Labcorp

$16.65

7 more matching options from DrSays

$21.32

DrSays TSH+Free T4

free T4

+ TSH

Lab visit at Labcorp

$21.32

$48.97

DrSays Comprehensive Thyroid Panel

free T4

+ TSH

+ 2 more markers

Lab visit at Labcorp

$48.97

$60.95

DrSays STTM 2.2 Thyroid Baseline

free T4

+ TSH

+ 3 more markers

Lab visit at Labcorp

$60.95

$70.99

DrSays Thyroxine (T4), Free, Dialysis/Mass Spectrometry (Endocrine Sciences)

free T4

Lab visit at Labcorp

$70.99

$79.95

DrSays Thyroid Panel (Professional)

free T4

+ TSH

+ 5 more markers

Lab visit at Labcorp

$79.95

$83.99

DrSays TSH+T4F+T3Free+T3Reverse+TPO

free T4

+ TSH

+ 3 more markers

Lab visit at Labcorp

$83.99

$251.90

DrSays Top 10 Thyroid Lab Tests

free T4

+ TSH

+ 6 more markers

Lab visit at Labcorp

$251.90

$18

Goodlabs Thyroxine, Free (Free T4)

free T4

Lab visit at Quest

$18

1 more matching option from Goodlabs

$67

Goodlabs Thyroid Panel

free T4

+ TSH

+ 4 more markers

Lab visit at Quest

$67

$20.52

Mito Health Free Thyroxine (Free T4) Blood Test

free T4

Lab visit at QuestClinician review

$20.52

3 more matching options from Mito Health

$31.79

Mito Health Free T4 (Thyroxine), Dialysis Blood Test

free T4

Lab visit at QuestClinician review

$31.79

$79.24

Mito Health Thyroiditis Panel

free T4

+ TSH

+ 2 more markers

Lab visit at BioReferenceClinician review

$79.24

$150.45

Mito Health At-Home Women’s Hormone Test Kit

free T4

+ 7 more markers

Home kitClinician review

$150.45

$23

Marek Diagnostics Free Thyroxine (FT4) (Free T4)

free T4

Lab visit at Quest

$23

$23

Own Your Labs Thyroxine (T4) Free, Direct

free T4

Lab visit at Labcorp

$23

2 more matching options from Own Your Labs

$152.20

Own Your Labs Thyroid Check-In Bundle (Without Antibodies)

free T4

+ TSH

+ 2 more markers

Lab visit at Labcorp

$152.20

$179.50

Own Your Labs Thyroid Check-In Bundle (With Antibodies)

free T4

+ TSH

+ 4 more markers

Lab visit at Labcorp

$179.50

$26.99

TestWell Free T4 Test (Thyroxine)

free T4

Lab visit at QuestClinician review

$26.99

1 more matching option from TestWell

$45.99

TestWell TSH + Free T4 Test

free T4

+ TSH

Lab visit at LabcorpClinician review

$45.99

$27

JustLabs Free T4 (Thyroxine)

free T4

Lab visit at Quest

$27

3 more matching options from JustLabs

$48

JustLabs Basic Thyroid Panel

free T4

+ TSH

+ 1 more marker

Lab visit at Quest

$48

$76

JustLabs Hashimoto's Panel

free T4

+ TSH

+ 3 more markers

Lab visit at Quest

$76

$102

JustLabs Complete Thyroid Panel

free T4

+ TSH

+ 4 more markers

Lab visit at Quest

$102

JH

$28

Jason Health T4 Free (FT4)

free T4

Lab visit at Quest

$28

$32

Life Extension Thyroxine Free, Direct (T4) Blood Test

free T4

Lab visit at QuestCoaching

$32

1 more matching option from Life Extension

$75

Life Extension Thyroid Panel (TSH, T4, Free T4, Free T3)

free T4

+ TSH

+ 2 more markers

Lab visit at QuestCoaching

$75

$36

DirectLabs T4 Free (FT4)

free T4

Lab visit at Quest

$36

2 more matching options from DirectLabs

$59

DirectLabs TSH + Free T4

free T4

+ TSH

Lab visit at Quest

$59

$89

DirectLabs T4 Free, Direct Dialysis

free T4

Lab visit at Quest

$89

$36

Grassroots Labs T4 Free

free T4

Lab visit at Quest

$36

1 more matching option from Grassroots Labs

$91.56

Grassroots Labs T4 Free - Direct

free T4

Lab visit at Quest

$91.56

$38.90

Ulta Lab Tests T4 Free Test Most Popular

free T4

Lab visit at Quest

$38.90

2 more matching options from Ulta Lab Tests

$62.90

Ulta Lab Tests TSH and Free T4 Test

free T4

+ TSH

Lab visit at Quest

$62.90

$112.90

Ulta Lab Tests TSH, Free T4, Free T3, and TPO Panel

free T4

+ TSH

+ 2 more markers

Lab visit at Quest

$112.90

$43

Request A Test Free T4 Blood Test

free T4

Lab visit at Labcorp

$43

1 more matching option from Request A Test

$93

Request A Test Free T4 Thyroxine Dialysis Blood Test

free T4

Lab visit at Quest

$93

$44

Celio Health T4 Free

free T4

Lab visit at Quest

$44

1 more matching option from Celio Health

$75

Celio Health TSH and Free T4

free T4

+ TSH

Lab visit at Quest

$75

$45

HealthLabs Free T4 Test (FT4)

free T4

Lab visit at Quest or Labcorp

$45

$45

Walk-In Lab Thyroxine (T4) Free Direct Serum Test

free T4

Lab visit at Quest or Labcorp

$45

1 more matching option from Walk-In Lab

$61

Walk-In Lab Thyroxine Free (Direct) T4 & TSH Blood Test Panel

free T4

+ TSH

Lab visit at Quest or Labcorp

$61

$53

LabsMD Thyroxine Free (FT4), Immunoassay

free T4

Lab visit at Quest

$53

2 more matching options from LabsMD

$88

LabsMD Thyroxine Free, Direct Dialysis (FT4)

free T4

Lab visit at Quest

$88

$90

LabsMD Thyroid-Stimulating Hormone (TSH) and Free T4 (FT4)

free T4

+ TSH

Lab visit at Quest

$90

$53

Private MD Labs Thyroxine Free (FT4), Immunoassay

free T4

Lab visit at Quest or Labcorp

$53

1 more matching option from Private MD Labs

$88

Private MD Labs Thyroxine Free, Direct Dialysis (FT4)

free T4

Lab visit at Quest or Labcorp

$88

$55

Accesa Labs T4 Free Test

free T4

Lab visit at Quest

$55

$58

Everlywell Free T4

free T4

Lab visitClinician review

$58

1 more matching option from Everlywell

$149

Everlywell Thyroid Test

free T4

+ TSH

+ 2 more markers

Home kitClinician review

$149

$62

Instalab Basic Thyroid Panel

free T4

+ TSH

+ 1 more marker

Lab visit at QuestClinician review

$62

1 more matching option from Instalab

$217

Instalab Comprehensive Thyroid Panel

free T4

+ TSH

+ 4 more markers

Lab visit at QuestClinician review

$217

$69

True Health Labs T4 Free (Thyroxine) Test

free T4

Lab visit

$69

$73

DiscountedLabs Free Thyroxine T4

free T4

Lab visit at Quest

$73

1 more matching option from DiscountedLabs

$110

DiscountedLabs Thyroid Panel (TSH + Free T3 + Free T4)

free T4

+ TSH

+ 1 more marker

Lab visit at Quest

$110

$81.10

Quest Health Thyroid Disorder Monitoring — Ongoing

free T4

+ TSH

Lab visit at QuestLive consultation

$81.10

1 more matching option from Quest Health

$124.10

Quest Health Thyroid Disorder Monitoring — Initial

free T4

+ TSH

+ 1 more marker

Lab visit at QuestLive consultation

$124.10

$89

Labcorp OnDemand Standard Thyroid Test

free T4

+ TSH

Lab visit at Labcorp

$89

1 more matching option from Labcorp OnDemand

$247

Labcorp OnDemand Custom Thyroid Test

free T4

+ TSH

+ 2 more markers

Lab visit at Labcorp

$247

$110

Personalabs Thyroxine (T4) Free, Direct Blood Test

free T4

Lab visit at LabcorpClinician review

$110

$119

LetsGetChecked Thyroid Antibody

free T4

+ TSH

+ 3 more markers

Home kit

$119

$159.99

LabReqs / SchoolTiters Thyroid Panel Test

free T4

+ TSH

+ 2 more markers

Lab visit

$159.99

1 more matching option from LabReqs / SchoolTiters

$169.99

LabReqs / SchoolTiters Advance Thyroid package

free T4

+ TSH

+ 2 more markers

Lab visit

$169.99

$249

Mira Panorama Fertility Lab Test

free T4

+ TSH

+ 6 more markers

Home kit

$249

1 more matching option from Mira

$249

Mira Panorama Perimenopause Lab Test

free T4

+ TSH

+ 6 more markers

Home kit

$249

Broader panels & memberships (85)

Includes this test within a membership or alongside other complete panels.

ProviderMarkers IncludedCollection ⓘPrice

$50.95

DrSays Weight Management (Basic)

free T4

+ TSH

+ 43 more markers

Lab visit at Labcorp

$50.95

24 more matching options from DrSays

$61.92

DrSays General Health - Basic Plus Lab Panel

free T4

+ TSH

+ 42 more markers

Lab visit at Labcorp

$61.92

$62.92

DrSays Weight & Metabolic Health Panel

free T4

+ TSH

+ 10 more markers

Lab visit at Labcorp

$62.92

$92.93

DrSays Hair Loss Health Panel

free T4

+ TSH

+ 23 more markers

Lab visit at Labcorp

$92.93

$96.88

DrSays Internist Panel - Basic

free T4

+ TSH

+ 49 more markers

Lab visit at Labcorp

$96.88

$104.91

DrSays Weight Management (Professional)

free T4

+ TSH

+ 48 more markers

Lab visit at Labcorp

$104.91

$104.91

DrSays Weight Management (Women) (Men) - Basic Plus

free T4

+ TSH

+ 48 more markers

Lab visit at Labcorp

$104.91

$104.92

DrSays Long COVID Profile (LabCorp Test 165065. Synonyms: CDC Post COVID; Long COVID; PASC; Post COVID; Post‐Acute Sequelae SARS, CoV‐2 infection.)

free T4

+ TSH

+ 38 more markers

Lab visit at Labcorp

$104.92

$116.92

DrSays Menopause - Advanced

free T4

+ TSH

+ 45 more markers

Lab visit at Labcorp

$116.92

$125.91

DrSays Hormone Health, Women - Basic Plus

free T4

+ TSH

+ 10 more markers

Lab visit at Labcorp

$125.91

$128.94

DrSays Fatigue & Low Energy Panel

free T4

+ TSH

+ 41 more markers

Lab visit at Labcorp

$128.94

$132.89

DrSays Core Health and thyroid Panel

free T4

+ TSH

+ 44 more markers

Lab visit at Labcorp

$132.89

$138.86

DrSays General Health - Advanced Lab Panel

free T4

+ TSH

+ 49 more markers

Lab visit at Labcorp

$138.86

$140.83

DrSays Blood Chemistry - Comprehensive

free T4

+ TSH

+ 55 more markers

Lab visit at Labcorp

$140.83

$176.91

DrSays Menopause - Comprehensive

free T4

+ TSH

+ 45 more markers

Lab visit at Labcorp

$176.91

$197.89

DrSays Hormone Health, Women - Advanced

free T4

+ TSH

+ 13 more markers

Lab visit at Labcorp

$197.89

$206.79

DrSays Baseline Biomarkers - Advanced

free T4

+ TSH

+ 68 more markers

Lab visit at Labcorp

$206.79

$218.85

DrSays Weight Management (Comprehensive)

free T4

+ TSH

+ 54 more markers

Lab visit at Labcorp

$218.85

$228.88

DrSays Anti- Aging 3 Extreme

free T4

+ 24 more markers

Lab visit at Labcorp

$228.88

$261.82

DrSays Women's Comprehensive Health Panel

free T4

+ TSH

+ 58 more markers

Lab visit at Labcorp

$261.82

$266.87

DrSays Hormone Health, Men - Advanced

free T4

+ TSH

+ 15 more markers

Lab visit at Labcorp

$266.87

$269.84

DrSays Hormone & Metabolic Panel (Professional)

free T4

+ TSH

+ 51 more markers

Lab visit at Labcorp

$269.84

$286.75

DrSays Baseline Biomarkers - Comprehensive

free T4

+ TSH

+ 72 more markers

Lab visit at Labcorp

$286.75

$309.82

DrSays Men's Comprehensive Health Panel

free T4

+ TSH

+ 58 more markers

Lab visit at Labcorp

$309.82

$353.83

DrSays Anti- Aging 4 Comprehensive

free T4

+ 31 more markers

Lab visit at Labcorp

$353.83

$90

JustLabs Energy & Fatigue Panel

free T4

+ TSH

+ 33 more markers

Lab visit at Quest

$90

1 more matching option from JustLabs

$112

JustLabs Comprehensive Wellness Panel

free T4

+ TSH

+ 41 more markers

Lab visit at Quest

$112

$164

Celio Health Chronic Fatigue Deep Dive Panel

free T4

+ TSH

+ 38 more markers

Lab visit at Quest

$164

3 more matching options from Celio Health

$185

Celio Health General Wellness Panel

free T4

+ TSH

+ 49 more markers

Lab visit at Quest

$185

$295

Celio Health Optimal Wellness

free T4

+ TSH

+ 58 more markers

Lab visit at Quest

$295

$955

Celio Health Female Performance & Longevity Panel

free T4

+ TSH

+ 57 more markers

Lab visit at Quest

$955

$195.99

TestWell Essential Health Panel

free T4

+ TSH

+ 40 more markers

Lab visit at Quest or Labcorp

$195.99

1 more matching option from TestWell

$605.99

TestWell Total Body Panel

free T4

+ TSH

+ 84 more markers

Lab visit at Quest

$605.99

$199First year

Hundred Health Hundred Membership

free T4

+ TSH

+ 84 more markers

Lab visit at Quest

$199First year

$221

Instalab GLP-1 Safety & Monitoring Panel

free T4

+ TSH

+ 49 more markers

Lab visit at QuestClinician review

$221

4 more matching options from Instalab

$226

Instalab Women's Hormone + PCOS Panel

free T4

+ TSH

+ 16 more markers

Lab visit at QuestClinician review

$226

$271

Instalab Fatigue Blood Panel

free T4

+ TSH

+ 43 more markers

Lab visit at QuestClinician review

$271

$311

Instalab Instalab Blood Panel

free T4

+ TSH

+ 62 more markers

Lab visit at QuestClinician review

$311

$611

Instalab Athlete Blood Panel

free T4

+ TSH

+ 71 more markers

Lab visit at QuestClinician review

$611

$230

Own Your Labs Thyroid Focus

free T4

+ TSH

+ 19 more markers

Home kit

$230

1 more matching option from Own Your Labs

$400

Own Your Labs Ultimate Health

free T4

+ TSH

+ 54 more markers

Home kit

$400

$249

Anabolic Insights Complete Women’s Panel

free T4

+ TSH

+ 63 more markers

Lab visit at Quest

$249

5 more matching options from Anabolic Insights

$399

Anabolic Insights Expanded Hormone + Metabolic Panel

free T4

+ TSH

+ 17 more markers

Lab visit at Labcorp

$399

$475

Anabolic Insights Advanced Men’s Panel

free T4

+ TSH

+ 57 more markers

Lab visit at Labcorp

$475

$499

Anabolic Insights Complete Men’s Panel

free T4

+ TSH

+ 64 more markers

Lab visit at BioReference

$499

$550

Anabolic Insights Advanced Men’s Panel+

free T4

+ TSH

+ 95 more markers

Lab visit at Quest

$550

$645

Anabolic Insights Women's Hormone + Metabolic Panel

free T4

+ TSH

+ 41 more markers

Lab visit at Labcorp

$645

$249

Life Extension Healthy Aging Comprehensive

free T4

+ TSH

+ 63 more markers

Lab visit at QuestCoaching

$249

2 more matching options from Life Extension

$599

Life Extension Female Elite Panel

free T4

+ TSH

+ 27 more markers

Lab visit at Quest

$599

$599

Life Extension Male Elite Panel

free T4

+ TSH

+ 30 more markers

Lab visit at Quest

$599

$274

SiPhox Health Ultimate 360

free T4

+ TSH

+ 57 more markers

Home kit

$274

$291.75

Mito Health Core Panel

free T4

+ TSH

+ 131 more markers

Lab visit at QuestClinician review

$291.75

2 more matching options from Mito Health

$468.57

Mito Health Pro Panel

free T4

+ TSH

+ 155 more markers

Lab visit at QuestClinician review

$468.57

$1,864.03

Mito Health Ultra Panel

free T4

+ TSH

+ 166 more markers

Lab visit at QuestClinician review

$1,864.03

$299

WHOOP Men's Health Panel

free T4

+ TSH

+ 69 more markers

Lab visit at QuestClinician review

$299

3 more matching options from WHOOP

$299

WHOOP Metabolic Health Panel

free T4

+ TSH

+ 69 more markers

Lab visit at QuestClinician review

$299

$299

WHOOP Performance Health Panel

free T4

+ TSH

+ 79 more markers

Lab visit at QuestClinician review

$299

$299

WHOOP Women's Health Panel

free T4

+ TSH

+ 72 more markers

Lab visit at QuestClinician review

$299

Est. $349

Healthspan Longevity Pro Panel

free T4

+ TSH

+ 61 more markers

Lab visit

Est. $349

$349First year

Hims & Hers Labs by Hers

free T4

+ TSH

+ 67 more markers

Lab visit at QuestClinician review, Messaging about results

$349First year

1 more matching option from Hims & Hers

$349First year

Hims & Hers Labs by Hims

free T4

+ TSH

+ 68 more markers

Lab visit at QuestClinician review, Messaging about results

$349First year

$365First year

Function Health Membership

free T4

+ TSH

+ 109 more markers

Lab visit at QuestClinician review

$365First year

$365First year

Immortals Biomarkers Membership

free T4

+ TSH

+ 119 more markers

Lab visit at Quest

$365First year

$397.90

Ulta Lab Tests Ulta Lab Tests Advanced Baseline Biomarkers

free T4

+ TSH

+ 75 more markers

Lab visit at Quest

$397.90

1 more matching option from Ulta Lab Tests

$462.90

Ulta Lab Tests Comprehensive Baseline Biomarkers

free T4

+ TSH

+ 79 more markers

Lab visit at Quest

$462.90

$399First year

Everlywell Everlywell 360

free T4

+ TSH

+ 76 more markers

Lab visit at QuestClinician review

$399First year

$399

Joi + Blokes Joi + Blokes Advanced Panel

free T4

+ TSH

+ 54 more markers

Lab visitLive consultation

$399

1 more matching option from Joi + Blokes

$699

Joi + Blokes Comprehensive Panel

free T4

+ TSH

+ 80 more markers

Lab visit at QuestLive consultation, Coaching, Messaging about results

$699

$399

Labcorp OnDemand Advanced Health Panel

free T4

+ TSH

+ 59 more markers

Lab visit at Labcorp

$399

$405

Quest Health Elite Health Profile

free T4

+ TSH

+ 60 more markers

Lab visit at QuestLive consultation

$405

$449

LabReqs / SchoolTiters Women's Hormone Panel Comprehensive

free T4

+ 12 more markers

Lab visit

$449

$450

Peak Personalized Healthcare Comprehensive Biomarker Panel

free T4

+ TSH

+ 24 more markers

Lab visitLive consultation

$450

$495

Marek Diagnostics Total Health Comprehensive

free T4

+ TSH

+ 70 more markers

Lab visit at Quest

$495

1 more matching option from Marek Diagnostics

$895

Marek Diagnostics Total Health — Complete

free T4

+ TSH

+ 88 more markers

Lab visit at Quest

$895

$499First year

OneTwenty OneTwenty Membership

free T4

+ TSH

+ 85 more markers

Lab visit at Quest

$499First year

$499

Ways2Well Clarity

free T4

+ TSH

+ 38 more markers

Lab visitLive consultation

$499

1 more matching option from Ways2Well

$1,499First year

Ways2Well Core

free T4

+ TSH

+ 38 more markers

Lab visitLive consultation

$1,499First year

$550

Parsley Health Advanced Lab Panel + Review

free T4

+ TSH

+ 77 more markers

Lab visit at QuestLive consultation, Messaging about results

$550

$948First year

Rythm Health At-Home Blood Test Membership

free T4

+ TSH

+ 26 more markers

Home kitClinician review

$948First year

$955

Walk-In Lab Anti-Aging #4

free T4

+ TSH

+ 83 more markers

Lab visit at Quest or Labcorp

$955

$1,329First year

Levels Complete

free T4

+ TSH

+ 117 more markers

Lab visit at QuestClinician review, Live consultation

$1,329First year

$1,860First year

Hone Health Premium Membership

free T4

+ TSH

+ 37 more markers

Lab visit at QuestAt-home drawLive consultation, Messaging about results

$1,860First year

$1,990

RETO Health Full Cellular Assessment

free T4

+ TSH

+ 94 more markers

Lab visitLive consultation

$1,990

$3,540First year

Biohackr Health Longevity Membership

free T4

+ TSH

+ 27 more markers

Lab visitLive consultation

$3,540First year

$12,500

My Doctor Medical Group Executive Health Evaluation

free T4

+ TSH

+ 26 more markers

Lab visitLive consultation

$12,500

How we compare tests →