Endocrine Abstracts

Background: Plasma normetanephrine levels are an annual screening tool for detecting paragangliomas in SDHB mutation carriers. Sensitivity is increased when patients are fasting and recumbent prior to phlebotomy, to allow use of age-adjusted reference ranges rather than the 1180 pmol/l upper limit for ambulatory patients of any age. We present our clinic’s results of samples taken after 30 minutes of recumbency to determine if applying age-adjusted ranges...