Test ID: T4TF
T4 (Thyroxine), Total and Free
Secondary ID 
A test code used for billing and in test definitions created prior to November 2011
8684
NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.
Yes
Useful For Suggests clinical disorders or settings where the test may be helpful
See individual test descriptions for:
-T4/8724 T4 (Thyroxine), Total Only, Serum
-FRT4/8725 T4 (Thyroxine), Free, Serum
Profile Information A profile is a group of laboratory tests that are ordered and performed together under a single Mayo Test ID. Profile information lists the test performed, inclusive of the test fee, when a profile is ordered and includes reporting names and individual availability.
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| T4 | T4 (Thyroxine), Total Only, S | Yes | Yes |
| FRT4 | T4 (Thyroxine), Free, S | Yes | Yes |
Method Name A short description of the method used to perform the test
FRT4/8725: Chemiluminometric Immunoassay
T4/8724: Immunoenzymatic Assay
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
T4 (Thyroxine), Total and Free
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