Blood culture contamination: Difference between revisions
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* '''Almost never''' true bacteremia |
* '''Almost never''' true bacteremia (almost always contaminant) |
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** [[Corynebacterium]], except [[Corynebacterium jeikeium]] |
** [[Corynebacterium]], except [[Corynebacterium jeikeium]] |
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** [[Bacillus]], except [[Bacillus anthracis]] |
** [[Bacillus]], except [[Bacillus anthracis]] |
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* '''Sometimes''' true bacteremia |
* '''Sometimes''' true bacteremia |
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** [[Micrococcus]] |
** [[Micrococcus]] |
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** [[Clostridium perfringens]] |
** [[Clostridium perfringens]] |
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** [[Coagulase-negative staphylococci]] |
** [[Coagulase-negative staphylococci]] |
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** [[Viridans group streptococci]] |
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** [[Lactobacillus]] |
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** [[Nutritionally variant streptococci]] ([[Abiotrophia]] and [[Granulicatella]]) |
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* '''Often''' true bacteremia |
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** [[Aerococcus]] |
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* '''Always''' true bacteremia (or at least, always treated as such) |
* '''Always''' true bacteremia (or at least, always treated as such) |
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** [[Staphylococcus aureus]] |
** [[Staphylococcus aureus]] |
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Latest revision as of 14:52, 6 February 2026
- Almost never true bacteremia (almost always contaminant)
- Sometimes true bacteremia
- Often true bacteremia
- Always true bacteremia (or at least, always treated as such)
- Coagulase-negative staphylococci are rarely significant (12%), but because they are so common (70-80% of all positive cultures), they are the most common cause of bacteremia
Further Reading
- Laboratory approaches to determining blood culture contamination rates: an ASM Laboratory Practices Subcommittee report. J Clin Microbiol. 2023;62:e01028-23. doi: 10.1128/jcm.01028-23
