Leu trace..what is that mean?

Nothing: Urine dipstick will indicate presence of white blood cells (leukocytes) as trace amount (TR) or higher amounts (1+,2+,3+,4+). Larger amounts suggest inflammation. Trace amount means nothing, as it is seen in many normal people. Urine must be collected properly to be accurate. Vaginal or foreskin contamination of specimen can falsely elevate leukocytes.