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Suitable potentiometric enzyme sensors for urea and creatinine.

The Analyst (1990-06-01)
L Campanella, M P Sammartino, M Tomassetti
ABSTRACT

Enzyme sensors for urea and creatinine were developed by coupling an ammonia gas-diffusion electrode with triacetate cellulose membranes entrapping urease or creatinine deiminase enzymes. Satisfactory results were obtained by using these sensors both in standard solutions and in authentic biological matrices.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Creatinine Deiminase microbial, lyophilized powder, ≥25 units/mg protein