What are the variables and normal ranges for a Urine C&S (Culture & Sensitivity) test?

What are the variables and normal ranges for a Urine C%26amp;S (Culture %26amp; Sensitivity) test when diagnosing a UTI (urinary tract infection)?

What are the variables and normal ranges for a Urine C%26amp;S (Culture %26amp; Sensitivity) test?
Normal range is no bacteria isolated at all. Normally, urine is sterile. Most of the variables can be encountered with the collection process. If you do not get a really good clean-catch midstream specimen you risk contamination with normal skin flora, vaginal discharge (if you're a woman,obviously!) or even fecal contamination. The old standard for considering urine to be infected was for there to be greater than 100,000 bacteria per milliliter present, if it was a voided (collected by just peeing) specimen collected first thing in the morning. A much lower number was important from a catheterized specimen. More recently the MDs are considering lower numbers to be important in most specimens. Of course a Sensitivity test is only performed on whatever bacteria is grown in the culture, and it tells what antibiotics are likely to kill the bug. Hope this helps you out..