investigation
Last reviewed 01/2018
Investigations include:
- serum electrolytes:
- chloride - low (50 to 80 mmol/l)
- potassium - usually low
- alkalosis
- confirmation by stool electrolytes, with extremely high chloride - greater than 150mmol/l, exceeding the sum of the sodium and potassium concentrations
- chloride virtually absent from urine