Referred Tests
| Web: | mayocliniclabs.com |
|---|---|
| Email: | mcl@mayo.edu |
| Telephone: | 800-533-1710 |
| International: | +1 855-379-3115 |
| Values are valid only on day of printing. | |
Test ID: FRTUP
Free Thyroxine Index (FTI), Serum
Useful For 
Suggests clinical disorders or settings where the test may be helpful
Estimating the amount of circulating free thyroxine (free thyroxine index) using the total thyroxine and thyroid binding capacity (T-uptake)
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 |
|---|---|---|---|
| TUPC | Thyroxine Binding Capacity, S | No | Yes |
| T4S | Thyroxine, Total, S | Yes, (order T4) | Yes |
| FRTI | Free Thyroxine Index | No | Yes |
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
Free Thyroxine Index(FTI), S
Aliases Lists additional common names for a test, as an aid in searching
T-Uptake
T4-Uptake
Thyroxine Binding Capacity-TBC
Thyroxine Binding Index-TBI
T4-Uptake
Thyroxine Binding Capacity-TBC
Thyroxine Binding Index-TBI