Thermo Scientific™ Oxoid™ Levofloxacin LEV, Antimicrobial Susceptibility discs

Thermo Scientific™ Oxoid™ Levofloxacin Antimicrobial Susceptibility Discs are high-precision tools for manual antimicrobial susceptibility testing (AST) using the disc diffusion method. These discs are impregnated with levofloxacin, a broad-spectrum fluoroquinolone antibiotic, and are available in two standardized concentrations—1 µg (CT1586B) and 5 µg (CT1587B)—to accommodate both routine clinical testing and specialized surveillance.

Each disc is housed in a spring-loaded, shatterproof cartridge and sealed with a desiccant to maintain moisture below 2%, ensuring long-term stability and accurate zone-of-inhibition results. The cartridges also feature clear labeling and end-of-cartridge indicators to streamline laboratory workflows and reduce handling errors.

Validated to BSAC guidelines, the discs enable laboratories to classify isolates as resistant, intermediate, or susceptible, while also providing visual cues that may suggest contamination, resistant subpopulations, or potential antibiotic interactions.

Key Features and Benefits

• Dual Strength Options: Available in 1 µg and 5 µg formats for standard and extended susceptibility profiling.
• Reliable and Reproducible: Complies with recognized standards (e.g., BSAC) to ensure consistency and regulatory alignment.
• Optimized Cartridge Design: Spring-loaded delivery ensures uniform disc placement on agar surfaces.
• Enhanced Stability: Desiccant-sealed cartridges preserve disc activity over long storage durations.
• Visual Diagnostic Support: Provides insights into inoculum quality, contamination, resistance mutations, and potential synergy or antagonism with other agents.
• Streamlined Workflow: Color-coded and labeled cartridges improve identification and reduce test setup time.

Product Specifications

Intended Use

These discs are intended for use in semi-quantitative agar diffusion tests to guide clinical decision-making regarding the use of levofloxacin against Gram-negative and Gram-positive pathogens. They are essential in AST workflows for infection control, resistance surveillance, and antimicrobial stewardship.

Thermo Scientific™ Oxoid™ Levofloxacin Antimicrobial Susceptibility Discs offer a robust, standardized solution for phenotypic AST. With dual concentrations, BSAC-compliant performance, and long-term stability, these discs are an ideal choice for laboratories conducting antimicrobial resistance testing across clinical, public health, and pharmaceutical settings.