Method, device and apparatus for measuring the concentration of creatinine, and method, device and apparatus for measuring the amount of salt using the same
First Claim
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1. A method for measuring a concentration of creatinine contained in urine or blood, comprising the steps of:
- (A) mixing urine or blood containing creatinine with a creatinine quantitative reagent containing a metal complex of at least one of hexacyanoferrate and hexacyanoruthenate in the absence of picric acid and in the absence of any enzyme responsive to creatinine, to cause the creatinine to reduce the metal complex,wherein, the urine or blood after the mixing in step (A) has a pH of not less than 2.5 and not more than 7;
(B) electrochemically measuring an amount of the metal complex reduced in step (A); and
(C) determining a concentration of the creatinine contained in the urine or blood from the amount of the reduced metal complex measured in step (B).
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Abstract
A method for measuring a concentration of creatinine includes the steps of: (A) mixing a sample containing creatinine with a creatinine quantitative reagent containing a metal complex of at least one of hexacyanoferrate and hexacyanoruthenate in the absence of picric acid and any enzyme responsive to creatinine, to cause the creatinine to reduce the metal complex; (B) electrochemically or optically measuring the amount of the metal complex reduced in the step (A); and (C) determining the concentration of the creatinine contained in the sample from the amount of the reduced metal complex measured in the step (B).
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7 Claims
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1. A method for measuring a concentration of creatinine contained in urine or blood, comprising the steps of:
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(A) mixing urine or blood containing creatinine with a creatinine quantitative reagent containing a metal complex of at least one of hexacyanoferrate and hexacyanoruthenate in the absence of picric acid and in the absence of any enzyme responsive to creatinine, to cause the creatinine to reduce the metal complex, wherein, the urine or blood after the mixing in step (A) has a pH of not less than 2.5 and not more than 7; (B) electrochemically measuring an amount of the metal complex reduced in step (A); and (C) determining a concentration of the creatinine contained in the urine or blood from the amount of the reduced metal complex measured in step (B). - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification