Question

What can cause a false positive sweat chloride test?

1) Cystic fibrosis
2) Dehydration
3) Excessive sweating
4) Incorrect testing technique

Answer 1

A false positive sweat chloride test can be caused by cystic fibrosis, dehydration, excessive sweating, or incorrect testing technique.

Step-by-step explanation:

A false positive sweat chloride test can be caused by several factors:

1. Cystic fibrosis: In people with cystic fibrosis, chloride levels in sweat are higher than normal, leading to a positive test result.
2. Dehydration: Dehydration can cause higher-than-normal blood chloride levels, resulting in a false positive.
3. Excessive sweating: Excessive sweating can lead to higher chloride levels in sweat, resulting in a false positive.
4. Incorrect testing technique: Improper collection or analysis of sweat samples can also cause false positive results.