Thyroid Hormones
Publication Date: August 31, 2023
Key Points
Key Points
- The “quality” of thyroid testing is defined by its ability to discriminate among hyperthyroid, hypothyroid and euthyroid, including subclinical conditions.
- Over the past 65 years, a progressive improvement in methods to quantitate clinically relevant thyrotropin (TSH), thyroxine (T4), and triiodothyronine (T3) concentrations has led to this state-of-the-art status report on current recommendations.
- Because of the log-linear relationship of TSH to free T4 (fT4), deviations of TSH concentration from population-specific reference intervals represent the preferred initial test for evaluation of thyroid function.
Interpreting Thyroid Tests
...preting Thyroid Tests...
...nical Points for Interpreting Thyroi...
...adays, most thyroid tests are made on multianaly...
Clinical Thyrotropin Measurements
...al Thyrotropin Measurements
...e 2. Points to Consider for Clinical Thyrotropin...
...re 1. Schematic Presentation of Dynamic...
...Common Physiological and Pharmacological E...
...4. Rarer Causes of Perturbation of the Hypothal...
...inical Utility of Triiodothyronine...
...6. Causes of Artifactual Results in Thyroid Horm...
...gure 2. Status of Comparability of Resul...