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Best Free T3 Tests in 2026

Compare free T3 tests by price, collection options and additional tests. Each includes free T3.

50 free T3 tests from 28 providers

Sorted by: Lowest pricePrice
ProviderMarkers IncludedCollection Price
DrSays Free T3 (Triiodothyronine, Free)
free T3
Lab visit at Labcorp
$16.65
5 more matching options from DrSays
DrSays Triiodothyronine (T3), Free, Dialysis and LC/MS-MS (Endocrine Sciences)
free T3
Lab visit at Labcorp
$53.99
DrSays STTM 2.2 Thyroid Baseline
free T3
+ 4 more markers
Lab visit at Labcorp
$60.95
DrSays Thyroid Panel (Professional)
free T3
+ 6 more markers
Lab visit at Labcorp
$79.95
DrSays TSH+T4F+T3Free+T3Reverse+TPO
free T3
+ 4 more markers
Lab visit at Labcorp
$83.99
DrSays Top 10 Thyroid Lab Tests
free T3
+ 7 more markers
Lab visit at Labcorp
$251.90
Goodlabs Triiodothyronine (T3), Free
free T3
Lab visit at Quest
$22
1 more matching option from Goodlabs
Goodlabs Thyroid Panel
free T3
+ 5 more markers
Lab visit at Quest
$67
Mito Health Triiodothyronine, Free (Free T3) Blood Test
free T3
Lab visit at BioReferenceClinician review
$23.25
Marek Diagnostics Free Triiodothyronine (FT3) (Free T3)
free T3
Lab visit at Quest
$30
TestWell Free T3 Test (Triiodothyronine)
free T3
Lab visit at QuestClinician review
$31.99
JustLabs Free T3 (Triiodothyronine)
free T3
Lab visit at Quest
$32
3 more matching options from JustLabs
JustLabs Basic Thyroid Panel
free T3
+ 2 more markers
Lab visit at Quest
$48
JustLabs Hashimoto's Panel
free T3
+ 4 more markers
Lab visit at Quest
$76
JustLabs Complete Thyroid Panel
free T3
+ 5 more markers
Lab visit at Quest
$102
Jason Health T3, Free
free T3
Lab visit at Quest
$38
Anabolic Insights Free T3
free T3
Lab visit at Labcorp
$39
Ulta Lab Tests T3 Free Test Most Popular
free T3
Lab visit at Quest
$40.90
1 more matching option from Ulta Lab Tests
Ulta Lab Tests TSH, Free T4, Free T3, and TPO Panel
free T3
+ 3 more markers
Lab visit at Quest
$112.90
Grassroots Labs T3 Free
free T3
Lab visit at Quest
$48.22
Own Your Labs Triiodothyronine, Free, Serum
free T3
Lab visit at Labcorp
$49.20
2 more matching options from Own Your Labs
Own Your Labs Thyroid Check-In Bundle (Without Antibodies)
free T3
+ 3 more markers
Lab visit at Labcorp
$152.20
Own Your Labs Thyroid Check-In Bundle (With Antibodies)
free T3
+ 5 more markers
Lab visit at Labcorp
$179.50
LabReqs / SchoolTiters T3 Free Thyroid Test
free T3
Lab visit
$49.99
2 more matching options from LabReqs / SchoolTiters
LabReqs / SchoolTiters Thyroid Panel Test
free T3
+ 3 more markers
Lab visit
$159.99
LabReqs / SchoolTiters Advance Thyroid package
free T3
+ 3 more markers
Lab visit
$169.99
Everlywell Free T3
free T3
Lab visitClinician review
$58
1 more matching option from Everlywell
Everlywell Thyroid Test
free T3
+ 3 more markers
Home kitClinician review
$149
LabsMD Tri-iodothyronine Free (FT3)
free T3
Lab visit at Quest
$58
1 more matching option from LabsMD
LabsMD T3 Free, Tracer Dialysis
free T3
Lab visit at Quest
$369
Private MD Labs Tri-iodothyronine Free (FT3)
free T3
Lab visit at Quest or Labcorp
$58
1 more matching option from Private MD Labs
Private MD Labs T3 Free, Tracer Dialysis
free T3
Lab visit at Quest or Labcorp
$369
Accesa Labs T3 Free Test
free T3
Lab visit at Quest
$59
DirectLabs T3 Free (FT3)
free T3
Lab visit at Quest
$59
Celio Health T3 Free
free T3
Lab visit at Quest
$60
Instalab Basic Thyroid Panel
free T3
+ 2 more markers
Lab visit at QuestClinician review
$62
1 more matching option from Instalab
Instalab Comprehensive Thyroid Panel
free T3
+ 5 more markers
Lab visit at QuestClinician review
$217
Request A Test Free T3 Blood Test
free T3
Lab visit at Labcorp
$63
1 more matching option from Request A Test
Request A Test Free T3 Triiodothyronine Dialysis Test
free T3
Lab visit at Labcorp
$133
Walk-In Lab Tri-iodothyronine (T3) Free Serum Test
free T3
Lab visit at Quest or Labcorp
$65
1 more matching option from Walk-In Lab
Walk-In Lab Triiodothyronine (T3) Free Blood Test, Dialysis and LC/MS-MS (Endocrine Sciences)
free T3
Lab visit at Quest or Labcorp
$135
True Health Labs T3 Free (Triiodothyronine) Test
free T3
Lab visit
$69
Life Extension Thyroid Panel (TSH, T4, Free T4, Free T3)
free T3
+ 3 more markers
Lab visit at QuestCoaching
$75
DiscountedLabs Free Triiodothyronine T3
free T3
Lab visit at Quest
$81
1 more matching option from DiscountedLabs
DiscountedLabs Thyroid Panel (TSH + Free T3 + Free T4)
free T3
+ 2 more markers
Lab visit at Quest
$110
Labcorp OnDemand Free T3 Test
free T3
Lab visit at Labcorp
$89
1 more matching option from Labcorp OnDemand
Labcorp OnDemand Custom Thyroid Test
free T3
+ 3 more markers
Lab visit at Labcorp
$247
Personalabs Triiodothyronine Free (T3, Free) Blood Test
free T3
Lab visit at LabcorpClinician review
$96
HealthLabs Free T3 Test (FT3)
free T3
Lab visit at Quest or Labcorp
$105
LetsGetChecked Thyroid Antibody
free T3
+ 4 more markers
Home kit
$119

Broader panels & memberships (75)

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

ProviderMarkers IncludedCollection Price
DrSays Internist Panel - Basic
free T3
+ 50 more markers
Lab visit at Labcorp
$96.88
15 more matching options from DrSays
DrSays Weight Management (Professional)
free T3
+ 49 more markers
Lab visit at Labcorp
$104.91
DrSays Weight Management (Women) (Men) - Basic Plus
free T3
+ 49 more markers
Lab visit at Labcorp
$104.91
DrSays Hormone Health, Women - Basic Plus
free T3
+ 11 more markers
Lab visit at Labcorp
$125.91
DrSays Core Health and thyroid Panel
free T3
+ 45 more markers
Lab visit at Labcorp
$132.89
DrSays Blood Chemistry - Comprehensive
free T3
+ 56 more markers
Lab visit at Labcorp
$140.83
DrSays Hormone Health, Women - Advanced
free T3
+ 14 more markers
Lab visit at Labcorp
$197.89
DrSays Baseline Biomarkers - Advanced
free T3
+ 69 more markers
Lab visit at Labcorp
$206.79
DrSays Weight Management (Comprehensive)
free T3
+ 55 more markers
Lab visit at Labcorp
$218.85
DrSays Anti- Aging 3 Extreme
free T3
+ 24 more markers
Lab visit at Labcorp
$228.88
DrSays Women's Comprehensive Health Panel
free T3
+ 59 more markers
Lab visit at Labcorp
$261.82
DrSays Hormone Health, Men - Advanced
free T3
+ 16 more markers
Lab visit at Labcorp
$266.87
DrSays Hormone & Metabolic Panel (Professional)
free T3
+ 52 more markers
Lab visit at Labcorp
$269.84
DrSays Baseline Biomarkers - Comprehensive
free T3
+ 73 more markers
Lab visit at Labcorp
$286.75
DrSays Men's Comprehensive Health Panel
free T3
+ 59 more markers
Lab visit at Labcorp
$309.82
DrSays Anti- Aging 4 Comprehensive
free T3
+ 31 more markers
Lab visit at Labcorp
$353.83
Celio Health Chronic Fatigue Deep Dive Panel
free T3
+ 39 more markers
Lab visit at Quest
$164
3 more matching options from Celio Health
Celio Health General Wellness Panel
free T3
+ 50 more markers
Lab visit at Quest
$185
Celio Health Optimal Wellness
free T3
+ 59 more markers
Lab visit at Quest
$295
Celio Health Female Performance & Longevity Panel
free T3
+ 58 more markers
Lab visit at Quest
$955
Mito Health At-Home Longevity Test Kit
free T3
+ 12 more markers
Home kitClinician review
$171.99
3 more matching options from Mito Health
Mito Health Core Panel
free T3
+ 132 more markers
Lab visit at QuestClinician review
$291.75
Mito Health Pro Panel
free T3
+ 156 more markers
Lab visit at QuestClinician review
$468.57
Mito Health Ultra Panel
free T3
+ 167 more markers
Lab visit at QuestClinician review
$1,864.03
Maximus Optimal Panel
free T3
+ 79 more markers
Lab visit at Quest
$199.99First year
1 more matching option from Maximus
Maximus Maximal Panel
free T3
+ 100 more markers
Lab visit at Quest
$349.99First year
Goodlabs Bodybuilder Panel
free T3
+ 54 more markers
Lab visit at Quest
$215
Instalab GLP-1 Safety & Monitoring Panel
free T3
+ 50 more markers
Lab visit at QuestClinician review
$221
2 more matching options from Instalab
Instalab Instalab Blood Panel
free T3
+ 63 more markers
Lab visit at QuestClinician review
$311
Instalab Athlete Blood Panel
free T3
+ 72 more markers
Lab visit at QuestClinician review
$611
Anabolic Insights Comprehensive Hormone & Metabolic Panel
free T3
+ 45 more markers
Lab visit at Quest
$225
7 more matching options from Anabolic Insights
Anabolic Insights Core Checkup Panel
free T3
+ 66 more markers
Lab visit at Quest
$230
Anabolic Insights Complete Men’s Panel
free T3
+ 59 more markers
Lab visit at Quest
$239
Anabolic Insights Complete Women’s Panel
free T3
+ 64 more markers
Lab visit at Quest
$249
Anabolic Insights Advanced Men’s Panel
free T3
+ 58 more markers
Lab visit at Labcorp
$475
Anabolic Insights Advanced Men’s Panel+
free T3
+ 96 more markers
Lab visit at Quest
$550
Anabolic Insights Advanced Women's Panel
free T3
+ 83 more markers
Lab visit at Quest
$590
Anabolic Insights Women's Hormone + Metabolic Panel
free T3
+ 42 more markers
Lab visit at Labcorp
$645
Own Your Labs Thyroid Focus
free T3
+ 20 more markers
Home kit
$230
1 more matching option from Own Your Labs
Own Your Labs Ultimate Health
free T3
+ 55 more markers
Home kit
$400
Life Extension Healthy Aging Comprehensive
free T3
+ 64 more markers
Lab visit at QuestCoaching
$249
2 more matching options from Life Extension
Life Extension Female Elite Panel
free T3
+ 28 more markers
Lab visit at Quest
$599
Life Extension Male Elite Panel
free T3
+ 31 more markers
Lab visit at Quest
$599
SiPhox Health Ultimate 360
free T3
+ 58 more markers
Home kit
$274
WHOOP Metabolic Health Panel
free T3
+ 70 more markers
Lab visit at QuestClinician review
$299
2 more matching options from WHOOP
WHOOP Performance Health Panel
free T3
+ 80 more markers
Lab visit at QuestClinician review
$299
WHOOP Women's Health Panel
free T3
+ 73 more markers
Lab visit at QuestClinician review
$299
Healthspan Longevity Pro Panel
free T3
+ 62 more markers
Lab visit
Est. $349
Hims & Hers Labs by Hers
free T3
+ 68 more markers
Lab visit at QuestClinician review, Messaging about results
$349First year
1 more matching option from Hims & Hers
Hims & Hers Labs by Hims
free T3
+ 69 more markers
Lab visit at QuestClinician review, Messaging about results
$349First year
Function Health Membership
free T3
+ 110 more markers
Lab visit at QuestClinician review
$365First year
Immortals Biomarkers Membership
free T3
+ 120 more markers
Lab visit at Quest
$365First year
Ulta Lab Tests Ulta Lab Tests Advanced Baseline Biomarkers
free T3
+ 76 more markers
Lab visit at Quest
$397.90
1 more matching option from Ulta Lab Tests
Ulta Lab Tests Comprehensive Baseline Biomarkers
free T3
+ 80 more markers
Lab visit at Quest
$462.90
Everlywell Everlywell 360
free T3
+ 77 more markers
Lab visit at QuestClinician review
$399First year
Humanaut Health Advanced Health Check
free T3
+ 71 more markers
Lab visitLive consultation
$399
2 more matching options from Humanaut Health
Humanaut Health Path
free T3
+ 71 more markers
Lab visitLive consultation
$2,700First year
Humanaut Health CoreMD
free T3
+ 71 more markers
Lab visitOngoing clinical care
$11,700First year
Joi + Blokes Joi + Blokes Advanced Panel
free T3
+ 55 more markers
Lab visitLive consultation
$399
1 more matching option from Joi + Blokes
Joi + Blokes Comprehensive Panel
free T3
+ 81 more markers
Lab visit at QuestLive consultation, Coaching, Messaging about results
$699
Labcorp OnDemand Advanced Health Panel
free T3
+ 60 more markers
Lab visit at Labcorp
$399
Quest Health Elite Health Profile
free T3
+ 61 more markers
Lab visit at QuestLive consultation
$405
LabReqs / SchoolTiters Women's Hormone Panel Comprehensive
free T3
+ 12 more markers
Lab visit
$449
Marek Diagnostics Total Health Comprehensive
free T3
+ 71 more markers
Lab visit at Quest
$495
1 more matching option from Marek Diagnostics
Marek Diagnostics Total Health — Complete
free T3
+ 89 more markers
Lab visit at Quest
$895
Ways2Well Clarity
free T3
+ 39 more markers
Lab visitLive consultation
$499
1 more matching option from Ways2Well
Ways2Well Core
free T3
+ 39 more markers
Lab visitLive consultation
$1,499First year
Parsley Health Advanced Lab Panel + Review
free T3
+ 78 more markers
Lab visit at QuestLive consultation, Messaging about results
$550
TestWell Total Body Panel
free T3
+ 85 more markers
Lab visit at Quest
$605.99
Rythm Health At-Home Blood Test Membership
free T3
+ 27 more markers
Home kitClinician review
$948First year
Walk-In Lab Anti-Aging #4
free T3
+ 84 more markers
Lab visit at Quest or Labcorp
$955
Hone Health Premium Membership
free T3
+ 38 more markers
Lab visit at QuestAt-home drawLive consultation, Messaging about results
$1,860First year
RETO Health Full Cellular Assessment
free T3
+ 95 more markers
Lab visitLive consultation
$1,990
Biohackr Health Longevity Membership
free T3
+ 28 more markers
Lab visitLive consultation
$3,540First year
My Doctor Medical Group Executive Health Evaluation
free T3
+ 27 more markers
Lab visitLive consultation
$12,500

How we compare tests →

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