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- Title
False-positive digoxin measurements due to conjugated metabolite accumulation in combined renal and hepatic dysfunction.
- Authors
Vlasses, Peter H.; Besarab, Anatole; Lottes, Sandra R.; Conner, Dale P.; Green, Paul J.; Gault, Henry; Vlasses, P H; Besarab, A; Lottes, S R; Conner, D P; Green, P J; Gault, M H
- Abstract
A 41-year-old man with combined renal and hepatic dysfunction was noted to have marked elevations in serum digoxin concentration subsequent to the discontinuation of digoxin therapy. These elevations (peak value 8.6 ng/ml), as measured by both radioimmunoassay and fluorescence polarization immunoassay, were not associated with electrocardiographic evidence of digitalis toxicity. Using a combined high-performance liquid chromatography/radioimmunoassay, accumulation and immunoassay cross-reactivity of conjugates of digoxigenin monodigitoxoside (cardioinactive metabolites of digoxin) were found to be the basis of the observed false elevation in digoxin concentration.
- Publication
American Journal of Nephrology, 1987, Vol 7, Issue 5, p355
- ISSN
0250-8095
- Publication type
journal article
- DOI
10.1159/000167501