Question

A 30-year-old woman presents with recurrent episodes of palpitations, sweating and tremor. During an episode, her capillary glucose is 2.4 mmol/L. She is not diabetic and takes no medications. Symptoms resolve with oral glucose. What further test is most appropriate to establish the diagnosis?

Accepted Answer

72-hour supervised fast with serial glucose and insulin measurements

Answer

Oral glucose tolerance test

Answer

Random fasting insulin level

Answer

HbA1c measurement

Answer

C-peptide measurement alone

Practice question

A 30-year-old woman presents with recurrent episodes of palpitations, sweating and tremor. During an episode, her capillary glucose is 2.4 mmol/L. She is not diabetic and takes no medications. Symptoms resolve with oral glucose. What further test is most appropriate to establish the diagnosis?