Free t4

Free t4

Less than 0.05% of Total Thyroxine (T4) is free or unbound. The hormone is made in the thyroid gland and is the precursor to T3. Production of T4 is dependent on levels of iodine, co factors like B6, Biopterin, Copper, Zinc, Vitamins B2, B3 and A. Considered by mainstream when combined with TSH to be the gold standard for assessing thyroid function., Levels are assessed to identify thyroid status (hypo and hyper), Iodine sufficiency as well as protein status and liver function.

Available Tests

FDX 00

£30.00

Full Biomarkers +
FDX 34

£565.00

Full Biomarkers +
FDX 21

£699.00

Full Biomarkers +
FDX 03

£330.00

FDX 32

£685.00

Full Biomarkers +
FDX 18

£355.00

FDX 26

£525.00

Full Biomarkers +
FDX 25

£535.00

Full Biomarkers +
FDX 33

£589.00

Full Biomarkers +
FDX 19

£340.00

Full Biomarkers +
FDX 27

£519.00

Full Biomarkers +
FDX 28

£529.00

Full Biomarkers +

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The FDx Method

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