Cystic fibrosis other diagnostic studies

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Shaghayegh Habibi, M.D.[2]

Other Diagnostic Studies

• Sweat Chloride Test: This test is an indicator of CFTR function and measures the chloride content of the sweat in the patients with cystic fibrosis.
  • A sweat chloride value of more than 60 mmol/L is diagnostic for cystic fibrosis.

• Nasal Potential Difference (NPD): In patients with cystic fibrosis NPD is performed by running different solutions through the nose. Voltage measurements from these solutions are used to detect changes in CFTR function.

References

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