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Cystic Fibrosis — RACP Paediatrics MCQ

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EasyRespiratoryCystic FibrosisRACP Paediatrics

A newborn undergoes a sweat chloride test. The result is 65 mmol/L. What does this indicate?

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Correct answer: D — Diagnostic of cystic fibrosis

A sweat chloride concentration of 60 mmol/L or above on two occasions is diagnostic of cystic fibrosis. Values of 30-59 mmol/L are intermediate and require further evaluation.

Reference: Australian Cystic Fibrosis Guidelines – 2024 – Diagnosis of Cystic Fibrosis