Endocrine Abstracts

Background: Central hypothyroidism can be difficult to diagnose as TSH values often reside within the normal range. The Endocrine Society clinical guideline for hormone replacement in hypopituitarism suggests levothyroxine is indicated for treatment of secondary hypothyroidism where fT4 levels decrease by ≥20%. To determine the reliability of this biochemical marker of secondary hypothyroidism we evaluated evolution of TFTs over time within a cohort of NFPA.<p class=...

The measurement of serum testosterone in women is difficult with most automated immunoassays because of poor sensitivity, accuracy and precision at low concentrations. Mass spectrometry is the gold standard for these measurements but it is slower and requires special expertise and equipment. We investigated whether the modification of a commercial RIA allowed improved testosterone measurements in laboratories without access to mass spectrometry.A commerc...