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Blood Cultures
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Megan Brashear, CVT, VTS (ECC), demonstrates the proper preparation and procedure for collecting blood cultures performed in a dog hospitalized for a fever of unknown origin.Sidebar Bookmark Button
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Megan Brashear
CVT VTS(ECC)
Enrolled: 07/2011
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Our clinic always pulls enough blood for both vials at the same time. What is the advantage of waiting an hour to pull for the second vial?
Thanks,
Ryan
Hi Ryan,
By both vials I am assuming you're talking about aerobic and anaerobic which is a slightly different issue. Because blood cultures can be tricky to determine if the organism that is grown is from the blood and not from the skin or other contaminant, and because bacteria can be shed into the blood at different time intervals, we draw two separate cultures from two separate vessels an hour apart. If the lab grows the same organism from both separate cultures, we can be more confident that it is indeed from the blood. This depends on your hospital protocol, if you are having success then keep it up!
What was the medium used in the blood culture? Also, did the cultures come back with anything interesting on this patient?
Kristen, here we use Oxoid Signal Blood Culture bottles, ordered through our outside lab. In this particular patient they did not grow anything exciting or interesting and he did well!