Which of the following investigation would be diagnostic of cystic fibrosis?
A sweat test measures the amount of chloride, a pa of salt, in Sweat. It is used to diagnose cystic fibrosis (CF). People with CF have a high level of chloride in their sweat. CF is a disease that causes mucus build-up in the lungs and other organs. It damages the lungs and makes it hard to breathe Ref Davidson 23rd edition pg 944
Deficiency of the enzyme mucinase
High sweat chloride content
Alpha-1 aldolase deficiency
Increased copper excretion in urine
Miscellaneous