CORE-ABR
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Pathogen

Cutibacterium acnes

An anaerobic gram-positive rod of normal skin. Most often a colonizer or contaminant; a genuine cause of device, shoulder and spinal-hardware infection.

Also: Propionibacterium acnes, P. acnes

Gram-positive bacteriaWound panelGraded on the antibiogram

How CORE-ABR grades it

Intrinsic resistance applied: metronidazole. Beta-lactams generally retain activity. Colonizer likelihood is characterized in the summary.

What the report shows for Cutibacterium acnes

  • Detected or not detected, with Ct, limit of detection and cycles above LOD — see PCR reporting.
  • A short pathogen summary, including colonizer likelihood where it applies.
  • A graded column on the antibiogram, and therapy options by scenario on the P.A.C.T. report.
  • When not detected, it is still listed among targets tested.

Resistance genes CORE-ABR applies

When detected, each of these genes is applied to Cutibacterium acnes only for the agents its mechanism defeats.

ermB / ermCMLSb resistance7 organisms on paneltetB / tetMTetracycline resistance9 organisms on panel

Tagged

Decision support only. The treating clinician decides. Molecular genotype does not replace phenotypic susceptibility testing, culture, or public-health reporting. Absence of a detected resistance gene does not establish susceptibility. Organism targets vary by panel; CORE-ABR is configured to the assay each laboratory runs.