Total T4

Provider	Includes	Annual Cost	Biomarkers
Superpower	✓	$199	100+ (150 with ratios)
WHOOP Advanced Labs	—	$349	65
Labcorp OnDemand	—	$398	30+
Life Extension	—	$486	40+
Everlywell	—	$468	83
Mito Health	✓	$349	100+
InsideTracker	—	$680	54
Function Health	—	$365	100+
Marek Health Base	—	$250	65
Marek Health Comprehensive	—	$495	70+
Marek Health Complete	—	$895	100+
Marek Health Executive	—	$1950	150+
Blueprint	—	$399	100+
Quest Health	—	$Varies	75+
Empirical Health	—	$190	100+
Oura Health Panels	—	$99	50
SiPhox Health	—	$125	60
Hims Labs Base	—	$199	50
Hims Labs Advanced	—	$499	120+
Healthspan	—	$4188	80+
Vitality Blueprint Standard	—	$375	85
Vitality Blueprint Elite	✓	$700	129

Ready to Test Total T4?

4 providers include this biomarker in their panels

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Frequently Asked Questions

What does Total T4 test for?

Total T4 is a thyroid function biomarker. Total thyroxine in blood (bound and unbound) The normal reference range is 4.5-12.0 μg/dL.

Which providers include Total T4?

4 of 22 providers include this test:Superpower, Blueprint, Mito Health, Vitality Elite.

How often should I test Total T4?

For most people, testing 2-4 times per year is recommended to establish baseline levels and track trends. Consult your healthcare provider for personalized recommendations.

What is the optimal range?

The standard reference range is 4.5-12.0 μg/dL. Many functional medicine practitioners recommend tighter optimal ranges for peak health. Your ideal range may vary based on age, sex, and health goals.

Why is Total T4 important?

Measures bound and free T4. Less useful than free T4 since affected by binding proteins. Can be misleading in pregnancy or estrogen use.

Medical Disclaimer

This information is for educational purposes only and is not medical advice. Always consult with a qualified healthcare provider about your specific health needs.