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Clinical Chemistry, Vol 40, 96-100, Copyright © 1994 by American Association for Clinical Chemistry
G Jakob, J Mair, KP Vorderwinkler, G Judmaier, P Konig, H Zwierzina, M Pichler and B Puschendorf
Department of Medical Chemistry and Biochemistry, University of Innsbruck Medical School, Austria.
We measured concentrations of guanosine 3',5'-monophosphate (cGMP) in plasma and urine of healthy subjects and patients with congestive heart failure, renal impairment, neoplastic disease, and hepatic cirrhosis. There was no correlation between cGMP concentrations in urine and in plasma. In all patients except those with renal impairment, urinary cGMP concentrations were significantly higher than in healthy persons. Only patients with heart failure or renal impairment showed significantly increased plasma cGMP concentrations. In contrast, cGMP in urine does not relate to the clinically assessed severity of heart failure (New York Heart Association functional classes). Determination of cGMP in plasma results in higher sensitivity and specificity for diagnosing heart failure than measurement of cGMP in urine.
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