BD Phoenix™ M50 System Quick Reference Guide
Results
MIC
For test panels
? MIC determination is pending (SIR values remain blank)
X MIC value cannot be produced; or Final ID is not claimed in the Taxa listing for AST testing; or the panel’s drug dilution series does
not cover the BD Phoenix™ reportable MIC range; or for additional causes see Special messages
> Growth occurred for all concentrations of antimicrobial
≤ No growth occurred in any concentration of antimicrobial
C Rapid Complete (MIC is pending, BDXpert SIR is based on ID and completed drug and/or resistance marker results). Replaced by
actual MIC values as they are determined.
For QC panels
P Actual MIC value within expected MIC range
F Actual MIC value not within expected MIC range (or is “X”)
Blank No range defined for antimicrobial/organism combination
Interpretations
S Susceptible
I Intermediate
R Resistant
N Not Susceptible (Indicates that the antimicrobial/organism does not have an upper breakpoint. When there is no upper breakpoint
there are no criteria for calling an organism intermediate or resistant. This often occurs when there is an absence of or rare
occurrence of resistant strains of an organism. In this case, if the MIC is below the lower breakpoint the SIR results can be reported
as susceptible but if the MIC is above the lower breakpoint the only result that can be reported is N or not susceptible.)
X Cannot produce interpretation
Blank No SIR (missing or invalid Final ID; MIC = ?, C, or X; unclaimed organism for Final ID)
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Results
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