Unit Code 200154:
T4 (Thyroxine), Total Only, Serum
Useful For
Monitoring treatment with synthetic hormones (synthetic T3 will
cause a low total T4)
Monitoring treatment of hyperthyroidism with thiouracil and other
antithyroid drugs
Total T4 levels offer a good index of thyroid function when the TBG
is normal and nonthyroidol illness is not present.
Special Instructions and Forms
Method Name
Immunoenzymatic Assay
Reporting Name
T4 (Thyroxine), Total Only, S
Ordering Mnemonic
T4/NE
NE/T4
Aliases
Syn-Thyroid
T4 Total Only, S MMLNE only
T4, Serum Performed at Mayo New England
Tetraiodothryonine
Thyroid Hormone
Thyroxine, Total (T4), Serum Performed at Mayo New England
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