title: An enzymatic assay for the colorimetric and fluorimetric determination of uric acid in sera.
abstract: The methods described in this paper are based on the uricase catalyzed oxidation of uric acid to allantoine and hydrogen peroxide. By making use of the catalytic activity of peroxidase the generated H2O2 is measured either spectrophotometrically with 3-methyl-benzothiazoline-2-one hydrazone (MBTH) and 3-dimethylaminobenzoic acid (DMAB) (M1) or fluorimetrically with tyramine (M2) or L-tyrosine (M3). The methods are simple, sensitive and selective. The procedures developed can be rapidly and readily performed on patient serum samples without deproteinization using 100 microliters and 5 microliters for colorimetric and fluorimetric assay, respectively.
authors.affiliation: Pharmazeutisches Institut der Universität Tübingen, FRG.
authors.forename: K A
authors.initials: KA
authors.lastname: Kovar
authors.forename: M N
authors.initials: MN
authors.lastname: el Bolkiny
authors.forename: R
authors.initials: R
authors.lastname: Rink
authors.forename: M A
authors.initials: MA
authors.lastname: Hamid
mesh_terms: D003124:Colorimetry; D006801:Humans; D013050:Spectrometry, Fluorescence; D014527:Uric Acid / Q000097:blood*
chemical_list: D014527:Uric Acid