Plasma-chloride Levels in Hyperparathyroidism and other Hypercalcaemic States

We record an analysis of plasma-chloride levels in patients with a raised plasma-calcium level, showing that chloride levels are nearly always higher in patients with hyperparathyroidism than in those with hypercalcaemia due to other causes. Material and MethodsWe have reviewed 61 patients in all; 30 of these attended the United Bristol Hospitals, and 31 were seen at University College Hospital, London, by Professor C. E. Dent, who very generously offered his cases for inclusion in our series.Thirty-three patients were suffering from primary hyper- parathyroidism, confirmed at operation.In the other 28 hypercalcaemia was due to the following causes: Sarcoidosis ....