Interpreting unusual thyroid function tests

Estimated Duration: 
1 hour

Thyroid conditions are among the most common endocrine disorders. Laboratory tests are crucial in the diagnosis and management of most of these conditions.

Thyroid function tests (TFTs) are the most commonly ordered endocrine tests in both outpatient and inpatient settings and constitute more than 60% of endocrine tests. In general, it is not difficult to interpret thyroid function tests; however, when the results are discordant or incongruous with the clinical picture, their interpretation can be challenging.

Learning objectives:

  1. Understand the regulation of thyroid status and factors governing thyroid hormone action.
  2. Know the different TFT patterns and identify causes.
  3. Know common confounders and assay interference.
  4. Know about drugs that can trigger thyroid dysfunction and interfere with oral thyroid hormone therapy.


Once you have completed this short course and quiz, please click 'submit', where you can print your certificate for 1 Continuing Professional Development (CPD) hour.

This course has been endorsed by The Pharmaceutical Society of New Zealand (PSNZ) and by The Royal New Zealand College of General Practitioners (RNZCGP) for up to 1CME credit for their General Practice Educational Programme (GPEP) and Continuing Professional Development (CPD) purposes, and the College of Nurses Aotearoa (NZ) for PD hours.


Content created in 2021 by Dr Parvathy Chandra MRCP UK, MRCP Endocrinology, FRACP. 


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