Test Catalog

Test ID: TTFB    
Testosterone, Total, Bioavailable, and Free, Serum

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 IDReporting NameAvailable SeparatelyAlways Performed
TTSTTestosterone, Total, SYesYes
FRTSTTestosterone, Free, SNoYes
BATSTestosterone, Bioavailable, SNoYes

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

FRTST: Equilibrium Dialysis

TTST: Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

BATS: Differential Precipitation

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


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

Testosterone, Total, Bio, Free, S

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

Bioavailable Testosterone
NonSex Hormone Binding Globulin (SHBG)
Testosterone, Total Only, Serum
Testosterone (ORDER TTST if not specified)
Testosterone Group (ORDER TGRP)