fT4 (Free Thyroxine)

LABOKLIN Service ID: 126


Material

Serum (or possibly heparin plasma) 0.5 ml resp. 0.4 ml in small mammals

Method

CLIA

Duration

Reporting of results on the day the sample is received (Mon–Sat)

Remark

  • Just like T4, fT4 is affected by underlying diseases.
  • Further diagnostic tests are recommended if fT4 concentrations are low: determination of TSH concentration, rT3 measurements, TRH Stimulation Test (see Endocrinology/unction Tests)