A 6-month-old has poor weight gain, recurrent chest infections and salty-tasting skin. Which test confirms the diagnosis?
Answer and explanation
Correct answer: C. Sweat chloride test
- Step 1: A raised sweat chloride confirms cystic fibrosis.
Answer
Sweat chloride test.
Why not the others: Chest X-ray, Sputum culture and Spirometry with bronchodilator do not fit.
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