Specimen Requirements
Title
Testosterone, Free, Bioavailable and Total, MS
Specimen Requirement
Collect red top, promptly centrifuge, transfer 2.8 mL serum to a screw top plastic vial, indicate sample type on tube and send.
Patient preparation:
Administration of STRENSIQ may interfere in certain assays and may falsely elevate values. For patients receiving STRENSIQ, consideration should be given to using alternate methods.
Methodology
Chromatography/Mass Spectrometry • Calculation (CALC) • Spectrophotometry (SP) • Immunochemiluminescent Assay
Stability
Room temp: 7 days, Refrigerated: 7 days, Frozen: 28 days
Reference Range
By Report*
Turnaround
4-6 days
Clinical Use
Includes: Testosterone Total, Testosterone Free, Testosterone Bioavailable, Sex Hormone Binding Globulin, Albumin.
Helpful in assessing testicular function in males and managing hirsutism, virilization in females.
Test Code
TFBTW