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Medthusiasm Newsletter February QOTM (Question of the Month)

Question:  Which of the following is essential to make a diagnosis of cystic fibrosis?
A) Positive family history
B) Elevated sweat chloride
C) Recurrent respiratory infections
D) Elevated trypsinogen levels

Answer: B.  The diagnosis of cystic fibrosis is made only after an elevated sweat chloride test or demonstration of a genotype consistent with cystic fibrosis