<prompt> A 16 yr old female presents with Primary Amenorhea. Examination shows a Sho Blind Vagina, with absent Uterus. The Next Investigation of choice is :KaryotypingIVPGonadotrophin leviesSerum Prolactin  <response>: Answer is A Karyotyping : A ,female phenotype along with amenorrhea, absent uterus and sho blind vagina may result from either : - Female XX with mullerian agenesis or - Male pseudo-hermophrodite XY - Karyotyping is the investigation of choice, to make such a distinction 