I am 5 1/2 months pregnant, at my last ob appointment (yesterday) they took a urine sample as usual, but this time the records show that i have "large leukocytes" but tested negative for nitrites. what does this mean?

White blood cells: This basically means that your urine had some white blood cells which can indicate a bladder infection. Not having nitrates decreases the risk that this is a bladder infection. Your doctor can send your urine for urine culture to determine

The leukocytes: may represent a bladder infection! Ask your OB-GYN who may want to do a urine culture! Hope this helps! Dr Z

UTI: a urine test with large leukocytes is indicative of an infection. A confirmatory microscopic evaluation of your urine could be done and then a culture to see if indeed there is an infection. In my practice I would usually treat pending the culture results if the microscopic exam of the urine was positive.