Would these normal flora bacteria remain viable in urine over time?
Alan Junkins (junkinsa at SMTPGW2.MUSC.EDU) wrote:
: Normal human urine is sterile when it's in the bladder. But as
: it passes through the urethra it will pick up some normal flora.
: These are usually skin and intestinal bugs that make their
: way through the urethral opening, guys like
: coagulase-negative staph, Corynebacterium, enterics, and
: anaerobes such as Bacteroides and Propionibacterium. So
: urine that has been passed would be expected to have fairly
: low numbers (less than 10,000 CFU/ml) of these bugs. The
: original question then becomes are Nitrobacter and
: Nitrosomonas included among those. To that I can't really
: speak intelligently, but I would be very surprised if they were
: "normal" flora since they seem to me to be more dirt and
: water bugs. Perhaps transient flora once in a blue moon.
: Alan D. Junkins, Ph.D.
: Assoc Prof, Medical Laboratory Sciences
: Medical University of South Carolina
:junkinsa at musc.edu:http://www.musc.edu/mls/
"The ceiling isn't glass; it's a very dense layer of men."