Biometrics renal standardizes in the gestating without pathology because there are no local measurements with these parameters during pregnancy in the country. The presence of renal disorders in pregnant women with medical conditions associated is evaluated. A descriptive, prospective and correlational study review. The sample is non-probabilistic type and intentional selection consisting of 198 pregnant patients, consisting of those who attended the consultation ultrasound of Maternal Fetal Medicine Maternity "Concepcion Palacios", which were distributed in a group of 149 pregnant women had no medical pathologies associated, and a B group of 49 pregnant women if presented. A table of percentiles for renal biometry pregnant was developed by gestational age. Ages ranged from 24.2±6, 2 years and 26.2±7.1 years for groups A and B, respectively. Primigestas predominated with 36.2% in group A and 42.8% in the group B. percentiles are calculated and the corresponding tables of renal diameters pregnant were prepared by gestational age. The sonographic findings reveal that diameters of renal morphology in pregnant women without renal disease in each of the trimesters of pregnancy.