| 摘要 |
A sensor for detecting a substance in a sample comprises composite-forming means which is comprised of a first capturing molecule and two or more electrodes, for forming on the two or more electrodes a composite comprising the first capturing molecule for specifically capturing the substance, the substance captured by the first capturing molecule and a second capturing molecule having a catalyst and being modified by the substance, current-detecting means for detecting a current flowing through at least one of the working electrodes having the catalyst thereon so as to detect a product formed when an catalytic substrate capable of acting with the catalyst is contacted with the catalyst, and substance-detecting means for determining the amount of the substance in the sample on the basis of the current value detected by the current-detecting means in a specified period of time after the catalyst has contacted with the catalytic substrate.
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