Test ID: TTFB
Testosterone, Total, Bioavailable, and Free, Serum
Secondary ID
A test code used for billing and in test definitions created prior to November 2011
83686
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
Second- or third– order test for evaluating testosterone status (eg, when abnormalities of sex hormone-binding globulin are present)
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 |
|---|---|---|---|
| TTST | Testosterone, Total, S | Yes | Yes |
| FRTST | Testosterone, Free, S | No | Yes |
| BATS | Testosterone, Bioavailable, S | No | Yes |
Method Name
A short description of the method used to perform the test
FRTST/3631: Equilibrium Dialysis
TTST/8533: Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
BATS/82978: Differential Precipitation
Reporting Name
A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
Testosterone, Total, Bio, Free, S
Aliases
Lists additional common names for a test, as an aid in searching
Androgens
Bioavailable Testosterone
NonSex Hormone Binding Globulin (SHBG)
Testosterone (ORDER 8533 if not specified)
Testosterone Group (ORDER 8508)
Testosterone, Total Only, Serum
Bioavailable Testosterone
NonSex Hormone Binding Globulin (SHBG)
Testosterone (ORDER 8533 if not specified)
Testosterone Group (ORDER 8508)
Testosterone, Total Only, Serum


