Intramuscular glucagon test of growth hormone reserve in children with growth retardation

Together with the clinical picture, the sweat test is the most reliable means of diagnosing cystic fibrosis. Four cases, of which one had cystic fibrosis, one malnutrition and the other two were apparently normal, are presented. They illustrate the diagnostic dilemma resulting from sweat being either normal or fluctuating between normal and pathological.