In the present study of outpatient settings, pyelonephritis was diagnosed in pregnant women by the history and physical examination & supported by urinalysis result. After a clinopathological confirmation of pyelonephritis, 50 pregnant women were selected. The urine sample was subjected for routine examination & urine sediment was examined for the evidence of pyelonephritis & particularly attention was given to the presence of white blood cell cast. A total of 13% of these patients had WBC cast in urine. Acute pyelonephritis is a bacterial infection of the kidneys that affects 1 to 2 per cent of pregnant women. In most cases, the infection first develops in the lower urinary tract. If it’s not diagnosed and treated properly, the infection may spread from your urethra and genital area to bladder and then to one or both of kidneys.

Keywords: Urine; Pyelonephritis; White Blood Cell Cast.