protein residue test
Chemical test used to detect protein contamination remaining on medical instruments after cleaning.
Full Definition
Protein residue tests are qualitative or quantitative chemical assays used to evaluate cleaning efficacy by detecting protein contamination on medical instrument surfaces. These tests typically use colorimetric reactions that change color in the presence of proteins, providing immediate visual results. Common test types include ninhydrin-based, biuret, and fluorometric assays. Protein testing is essential for cleaning validation and routine monitoring because protein residues can interfere with sterilization, harbor microorganisms, and cause adverse patient reactions. Test results help optimize cleaning protocols and verify acceptable cleanliness levels.
Usage
Usage note: Distinguish from ATP tests (adenosine triphosphate) which detect general organic matter, not specifically proteins.
In Context
- "The protein residue test showed acceptable results following the modified cleaning protocol." — Cleaning validation report
- "Random protein residue testing revealed inadequate cleaning of complex laparoscopic instruments." — Quality assurance audit