What is being analysed?

The sweat chloride test measures the amount of chloride in sweat. Chloride is a crucial component of sweat, and its levels can indicate the presence of certain medical conditions, particularly cystic fibrosis.

What does the result mean?

The result of the sweat chloride test provides valuable information about the functioning of the sweat glands. Elevated chloride levels may suggest the presence of cystic fibrosis, while normal levels indicate its absence.

Why do the analysis?

The analysis is performed to aid in the diagnosis of cystic fibrosis, a genetic disorder that affects the lungs, digestive system, and other organs. Early detection is vital for timely intervention and management of the condition.

When to do the analysis?

The sweat chloride test is typically recommended when there is suspicion of cystic fibrosis, especially in infants and young children presenting with symptoms such as persistent respiratory infections, failure to thrive, or salty-tasting skin.

What sample is required?

A small amount of sweat is collected from the skin, usually from the forearm or the back, using a special sweat collection device.

Is any type of prior preparation necessary?

No specific prior preparation is necessary for the sweat chloride test. However, it is essential to inform the healthcare provider about any medications being taken, as some medications may interfere with the test results.

How is it used?

The sweat chloride test is used as a diagnostic tool for cystic fibrosis. It helps healthcare providers confirm or rule out the presence of the condition, guiding further diagnostic testing and treatment decisions.

What are the normal values?

What does it mean to have altered values?

Elevated sweat chloride levels, typically above 60 mEq/L, are indicative of cystic fibrosis. Lower levels may still warrant further evaluation, as they can occur in carriers of the cystic fibrosis gene or in individuals with other conditions affecting sweat chloride levels.

Understanding the sweat chloride test and its implications can aid in the early detection and management of cystic fibrosis, ultimately improving patient outcomes and quality of life. If you suspect cystic fibrosis or have concerns about your health, consult with a healthcare professional for personalised guidance and care.