Our daughter was diagnosed with mild hydronephrosis last summer.
The urologist is monitoring her for now with monthly urine checks
with our pediatrician's office. Every month her urine has had
leukocytes (spelling?) so they culture it overnight. The culture comes
back fine. Why does she always have leukocytes and is this
normal? She goes back to the urologist this summer for another
ultrasound and checkup.
Leukocytes are simply white blood cells. They are often a sign of infection and that is why your pediatrician continues to culture the urine. Pyuria is defined as 8 or more leukocytes per cubic millimeter, this translates into 2-5 leukocytes per high power field on a slide.(microscopic evaluation)
The assessment of pyuria however is imperfect. The leukocyte count on a routine urinalysis can be affected by factors that alter the concentration of the urine. Furthermore, error may be introduced by variation in the amount of fluid that is eventually placed on the slide.
A second test that assesses the leukocyte esterase content on a rapid dipstick test is also used to predict pyuria. This dipstick test is 94% specific with 2-4% false positives. Substitution of this test for the gold standard microscopic evaluation may prove to be cost effective, yet , other information on the microscopic evaluation may be lost.
When in doubt a culture is sent, this seems to be the case at your pediatrician
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.