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Creatinine biosensor

  • US 6,861,232 B2
  • Filed: 05/14/2001
  • Issued: 03/01/2005
  • Est. Priority Date: 05/16/2000
  • Status: Expired due to Term
First Claim
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1. A method for producing biosensors comprising at least two enzymes for the amperometric determination of enzymatically degradable substances in biological liquids wherein the enzymes are immobilized on a working electrode, comprising applying an enzyme together with one or more surface-active substances in an aqueous solution on the working electrode, allowing said enzyme together with the one or more surface-active substances in the aqueous solution to dry, and chemically immobilizing the at least second enzyme thereupon.

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