good morning doc,I am a mother from the Philippines.my son had a kidney surgery to remove a stone a year ago.I took him for urinalysis today and the results are:Color:yellow,Reaction 5.5,pus cells 0-4/hpf,rbc 1-4/hpf epith cells few,mucus:many,but no presence of albumin.character is clear and sugar is negative.pls help me to interperet this doctor.thank you very much