<prompt> All of the following are done in case of VVF exceptMethylene blue 3 swab testUrine cultureCystoscopyMRI  <response>: Ans. is d. i.e. MRIRef: Shaw 16thed, p221 222The Investigation done in VVF are: Urine culture USG IVP Cystoscopy Methylene blue 3 swab test 