TEST CATALOG ORDERING & RESULTS SPECIMEN HANDLING CUSTOMER SERVICE EDUCATION & INSIGHTS
Test Catalog

Test ID: T4    
T4 (Thyroxine), Total Only, Serum

Useful For Suggests clinical disorders or settings where the test may be helpful

Monitoring treatment with synthetic hormones (synthetic triiodothyronine [T3] will cause a low total thyroxine [T4])

 

Monitoring treatment of hyperthyroidism with thiouracil and other anti-thyroid drugs

 

Index of thyroid function when the thyroxine-binding globulin (TBG) is normal and non-thyroidal illness is not present

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

See Thyroid Function Ordering Algorithm in Special Instructions.

Special Instructions Library of PDFs including pertinent information and forms related to the test

Method Name A short description of the method used to perform the test

Electrochemiluminescence Immunoassay

NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.

Yes

Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

T4 (Thyroxine), Total Only, S

Aliases Lists additional common names for a test, as an aid in searching

Syn-Thyroid
T4, Serum
Tetraiodothyronine
Thyroid Hormone
Thyroxine, Total
T4 Total Only, S
Thyroxine
Thyroxine (T4)