Hello and welcome to HCM.
Thank you for your query.
An MCU test is an investigation to check if your child's renal system and urinary tract
, etc.) are functioning appropriately. This would have been advised as an infection carrying 100-150 pus cells is a serious one, this could have many reasons for it, but urinary stagnation due to various other conditions (eg. urinary reflux) or a poorly functioning kidney(s) or urinary system
could also be the cause.
At this tender age, it is best to diagnose any underlying condition in order to improve quality of life and control any conditions diagnosed. Please go ahead with the MCU as the antibiotics used are also of a high grade, which means this infection most probably has some underlying cause to it. Do not worry.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: http://doctor.healthcaremagic.com/doctors/dr-shoaib-khan/64581 . I would gladly help you.