[Visual test evaluation of the results for the semiquantitative determination of cystine in urine using the nickel/dithionite (Ni2+/S2O42-) test].
The Ni2+/S2O4(2-)-test makes semiquantitative assessment of cystine concentration in urine possible. The reaction principle of the method is based on the formation of a nickel/cysteine/sulfide complex of brown colour. Visual test evaluation is done by classifying the colour intensity of the sample/reagent mixture according to an exact colour shade. Each colour shade on a colour reference table is correlated to a certain range of cystine concentration. Cystine determination is described in detail for two ranges (0.60 and 1.25 mmol/l).
Kilian
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Chirurgischen Abteilung, Kreiskrankenhauses Blankenhain.
Berg
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D003116:Color; D003124:Colorimetry / Q000379:methods; D003555:Cystinuria / Q000652:urine*; D004227:Dithionite; D006801:Humans; D007202:Indicators and Reagents; D009532:Nickel
D007202:Indicators and Reagents; D004227:Dithionite; D009532:Nickel
Visuelle Auswertung von Analyseergebnissen zur semiquantitativen Cystinbestimmung im Urin mit dem Nickel/Dithionit (Ni2+/S2O4(2-))-Test.