Artifactual hypoglycaemia in a patient with scleroderma and Raynaud’s phenomenon

To the Editor: A 52-year-old woman was referred to our emergency centre with a 1-day history of diarrhoea. The referring cliniciannoted that the patient was hypoglycaemic and that finger-prick glucose levels remained low, despite numerous intravenous bolusesof 50 mL 50% dextrose solution. On presentation to our centre, the patient was alert and co-operative, with a normal mental state. Hervital signs were within normal limits, but she was found to have concomitant persistent hypoglycaemia (–2.9 mmol/L) on a point-ofcareglucometer, in the absence of hypoglycaemic symptoms.