Method, analyzer and sensor for measuring urea concentration.

摘要

A method of measuring the concentration of urea in a liquid sample employing a urea sensor including urease associated with an electrode adapted to generate output response to ammonium ions. The method includes contacting the sensor with the liquid sample so that at least a portion of the urea in the liquid sample is converted by the urease to ammonium ions, the ammonium ions contacting the electrode to generate output related to the urea concentration but being unadjusted for the variation in the proportion of urea converted to ammonium ion by the urease at different urea concentrations; and adjusting the output for the variation in the proportion of urea converted to ammonium ions by the urease at different urea concentrations.