Total T4

Major thyroid hormone secreted by the thyroid gland and subject to appropriate levels of Biopterin, Vitamins B6, B2, A, B3 and C as well as sufficient Copper and Zinc. Total T4 represents over 99.5% of the total thyroid hormone available. Levels can help determine, thyroid status (hypo or hyper), Iodine sufficiency,

Available Tests

Bespoke

FDX 00

View ▸
Full Biomarkers +

FDX Inspect

FDX 02

View ▸
Full Biomarkers +

FDX Ultra

FDX 03

View ▸
Full Biomarkers +

Thyroid hormones

FDX 10

View ▸
Full Biomarkers +

Thyroid Inspect

FDX 15

View ▸
Full Biomarkers +

Femme Inspect

FDX 18

View ▸
Full Biomarkers +

Man Inspect

FDX 19

View ▸
Full Biomarkers +

Cardio Check

FDX 21

View ▸
Full Biomarkers +

Thyroid Ultra

FDX 22

View ▸
Full Biomarkers +

Thyroid Check

FDX 23

View ▸
Full Biomarkers +

Thyroid Check +

FDX 24

View ▸
Full Biomarkers +

Femme Ultra

FDX 25

View ▸
Full Biomarkers +

Femme Reset

FDX 26

View ▸
Full Biomarkers +

Man Reset

FDX 27

View ▸
Full Biomarkers +

Man Ultra

FDX 28

View ▸
Full Biomarkers +

Weight Aware

FDX 29

View ▸
Full Biomarkers +

Workout

FDX 30

View ▸
Full Biomarkers +

Workplace

FDX 31

View ▸
Full Biomarkers +

Femme Fertility

FDX 32

View ▸
Full Biomarkers +

Fertility For Men

FDX 33

View ▸
Full Biomarkers +

Brain Check

FDX 34

View ▸
Full Biomarkers +
FDX Index Box

Index Thyroid

FDX 307

View ▸
Full Biomarkers +

Thyroid Baseline

FDX 401

View ▸
Full Biomarkers +

Femme Essential

FDX 402

View ▸
Full Biomarkers +

Man Essential

FDX 403

View ▸
Full Biomarkers +

Femme Essential+

FDX 404

View ▸
Full Biomarkers +

Man Essential+

FDX 405

View ▸
Full Biomarkers +

Professional test kit instructions

Patient Test Info Sheet

Example Snapshot Report

The FDX Method

Find a Blood Draw

Additional Resources

Blog

Education

Practitioner 
Resources