Endocrine Abstracts

Introduction: Vitamin D insufficiency and deficiency are defined as a serum 25-hydroxy-vitamin D (25(OH)D) below 50 and 30 nmol/l respectively. We aimed to determine whether there is a serum 25(OH)D that signals a low serum calcium and phosphate, secondary hyperparathyroidism, high bone remodelling, low area bone mineral density (aBMD), and so, an increased risk for microstructural deterioration and bone fragility.Method: Concentrations of 25(OH)D, calci...

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Background: The diagnosis of central diabetes insipidus (DI) relies on indirect measurement of serum/urine sodium and osmolality. Since the diagnosis can only be made when an inappropriately dilute urine is paired with a significantly concentrated serum, the process is tedious for the clinician and uncomfortable for the patient. Copeptin is the C-terminal portion of the anti-diuretic hormone (ADH) prohormone which correlates with the less stable ADH, therefore providing a dire...