MRSA Detection Medium Using Sub-Inhibitory Antibiotics

The patent replaces complex molecular biology techniques with a simplified cultural medium-based detection system. The medium uses chemical substrates that react with enzymatic activities of MRSA bacteria, producing visible color changes or fluorescence, thereby substituting complex laboratory equipment and procedures with a simpler, visually detectable system that can be performed by less specialized personnel.

The detection medium performs the detection function autonomously through its chemical composition. The medium contains substrates that automatically react with bacterial enzymatic activities, producing detectable signals without requiring external equipment or complex operational procedures. This self-service characteristic eliminates the need for expensive molecular biology equipment and highly skilled personnel.

The patent applies local quality by incorporating specific substrates (such as chromogenic substrates or fluorescent substrates) into the culture medium at defined locations or concentrations. These substrates are selectively reacted with by MRSA bacteria's enzymatic activities, creating localized detectable signals only where MRSA is present, thereby maintaining ease of operation while achieving high detection specificity.

The patent utilizes color changes as the detection mechanism. The culture medium contains substrates that undergo color transformation when acted upon by MRSA bacterial enzymes. This visual color change provides immediate, specific indication of MRSA presence, maintaining the simplicity of conventional culture media operation while dramatically improving detection specificity through visual differentiation.