Levothyroxine absorption test (DFT)

Test/Investigation

Levothyroxine absorption test (DFT)

Site(s) or Laboratory offering Test/Investigation

NNUH (Biochemistry)

Indications

This test is used in the investigation of unusual thyroid function tests

Comments/Precautions

Please refer to local trust guidelines for DFT protocols. Please ensure all timings are clearly labelled on every sample.

Sample type

Serum (yellow top) samples required. Refer to local DFT protocol for timings

Turnaround times (TAT) Urgent/Routine/GP or OPD

Please refer to the individual tests included in this dynamic function test for turn-around times.

If UKAS Accredited Test indicate at which site

Please refer to the individual tests included in this dynamic function test