An index for evaluating the effectiveness of the antimicrobial combinations, the fractional inhibitory concentration (FIC) is obtained by calculating the sum of the ratios of the MICs for each drug in the combination to the MIC for the substance alone. FIC = (MIC of Drug A in Combi / MIC of A Alone) + (MIC of Drug B in Combi / MIC of B Alone).
Interpretive report provided.
3 - 7 days
Bacteria should be in pure culture, actively growing, placed in a proper mailing container (agar plates are not acceptable), and labeled as an etiologic agent. Keep at room temperature. If culture was done by MLabs, contact the MLabs Client Services Center within 7 days of initial culture date to request that the patient's isolate be saved for MBC testing. Indicate organism identification, antibiotic(s) to be tested, specimen source, and collection date/time.
Test sent to Mayo Medical Laboratories; performed by Focus Diagnostics.