Standard range of rbc in urine 2-4/hpf. is that normal?

No. IF on a spun specimen then maybe. Need more details on what was done. And be certain it was a clean catch midstream urine. See: Perm J. 2009 Winter; 13(1): 37–46 go to pubmed & search for this. More than 3 is considered abnorm done on a proper specimen in at least 2 of 3 times. Urine not collected within 48 hrs of exercise. I would repeat 2 more at least 48 hr after exercise.