Levothyroxine malabsorption or pseudomalabsorption? A question in the management of refractory hypothyroidism.
Sílvia Santos MonteiroTiago Silva SantosAna Martins LopesJosé Carlos OliveiraCláudia FreitasAndré Couto CarvalhoPublished in: Endocrine connections (2022)
The LT4AT is an effective and safe way to assess refractory hypothyroidism and provides valuable information to distinguish LT4 malabsorption from 'pseudomalabsorption'. Our data suggest that most patients with suspicious LT4 malabsorption perform normally during LT4AT. This test provides relevant information for better management of patients with refractory hypothyroidism.