Blood culture contamination sources

Skin contaminants are the most common blood culture contamination source. Roughly 20% of the microbes present in skin reside deep in the dermis layer and may be drawn into blood specimens.1 Without a means of skin contaminant diversion, hospitals accept high rates of seemingly unavoidable false positives blood cultures.

“It is currently accepted that most organisms identified as contaminants in BCs originate from the skin of the patient.”
– AJIC, 20151

Common blood culture contamination sources by phase

blood culture contamination source