55137-4

LOINC code 55137-4 identifies "Penicillin Parenteral [Susceptibility] for meningitis by Minimum inhibitory concentration (MIC)". Susceptibility of an isolate to parenteral penicillin in the context of a patient with meningitis, i.e., the "meningitis breakpoint". Various agencies, including the FDA and CLSI in the U.S. and EUCAST in Europe, publish guidelines for determining susceptibility of different organisms to different antimicrobials. In most cases, susceptibility does not vary by type of infection, but for a few specific types of infection, including meningitis, pneumonia and urinary tract infection, certain antimicrobials have different susceptibility thresholds.

This code measures Penicillin.parenteral in Isolate.meningitis. It belongs to the ABXBACT class in the LOINC classification.

LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.