Abstract
Plasma carnitine concentrations were measured in 43 children and adults with cystic fibrosis (CF), and values were compared with those from normal controls. Clinically significant abnormalities of plasma carnitine concentration were not found in CF patients. The concentration of free carnitine was slightly but significantly elevated in CF patients, and the acylcarnitine concentration and acylcarnitine/free-carnitine ratio were slightly but significantly lower. Total carnitine concentrations were similar to those of controls. The CF patients did not have abnormal urinary acylcarnitines. Altered concentrations of free and esterified carnitine were not associated with nutritional status or with liver or pulmonary function.
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