The transfer may occur directly in which the catheter is loaded with the embryos before catheter placement, with a trial transfer followed by the actual transfer empty catheter is passed through the cervix before loading the catheter with an embryo for transfer, or the afterload transfer The catheter is passed through the cervix, after which the inner catheter is removed, with the outer catheter left in place in the canal buy priligy in the usa The clinical question should be addressed even if no abnormality is detected in the area related to the clinical question