A 51-year-old has 4 litres daily of watery diarrhoea that persists while fasting. Potassium is 2.4 mmol/L, bicarbonate 15 mmol/L and stool osmotic gap...

Question

A 51-year-old has 4 litres daily of watery diarrhoea that persists while fasting. Potassium is 2.4 mmol/L, bicarbonate 15 mmol/L and stool osmotic gap is low. Colonoscopy and infection studies are normal. Which test best confirms the suspected secretory endocrine syndrome?

Accepted Answer

Fasting plasma VIP concentration

Answer

Fasting plasma 5-HIAA concentration

Answer

Fasting plasma gastrin concentration

Answer

Fasting plasma insulin concentration

Answer

Fasting plasma calcitonin concentration

DOAC Reversal (Bleeding) — MRCP Part 1 MCQ

A 51-year-old has 4 litres daily of watery diarrhoea that persists while fasting. Potassium is 2.4 mmol/L, bicarbonate 15 mmol/L and stool osmotic gap is low. Colonoscopy and infection studies are normal. Which test best confirms the suspected secretory endocrine syndrome?