Objectives: Vitamin D receptors exist in the reproductive system of women. Vitamin D is a fat-soluble vitamin that plays a double role as vitamin and hormone. Vitamin D defciency is a major health problem around the world. The prevalence of vitamin D defciency is high worldwide. The morbidly adherent placenta is now a signifcant obstetric challenge. Therefore,
we decided to conduct a study on the effects of vitamin D defciency on placenta accreta to help identify high-risk women.

Materials and Methods: This analytical cross-sectional study was conducted from August 2016 to February 2017 at Alzahra hospital affliated to Tabriz University of Medical Sciences, Tabriz, Iran. In our study, we had 2 groups of women who referred to the high risk pregnancy clinic in Alzahra hospital.

Results: According to the results obtained from independent samples t test, serum level of vitamin D was lower than 30 ng/ mL in 97% of the participants.

Conclusions: Based on the results of the present study, since the diagnosis of placenta accreta was made earlier in the pregnancy, it can be determined simultaneously with an anomaly scan during pregnancy to prevent the possible complications of placenta accreta. We hope that with this study we can help prevent and reduce the occurrence of placenta accreta in order to prevent the psychiatric and surgical complications of hysterectomy caused by placenta accreta.