To find out if lower levels of vitamin D is more prevalent in preeclamptic women

Inclusion Criteria:

• Parity: primigravida.
• Age: 18 - 35 years.
• Singleton pregnancy.
• Gestational age: 36-40 weeks.
• No past history of any medical disorder and with no other medical complications during pregnancy

Exclusion Criteria:

• Women with preexisting medical conditions like rheumatoid arthritis, thyroid, hepatic or renal failure, metabolic bone disease, diabetes mellitus, malabsorption and lupus.
• History of intake of medications influencing bone, vitamin D or calcium metabolism e.g. antiepileptic, theophylline, antitubercular drugs in the last 6 months.
• Women with multiple pregnancy.
• Women with congenital fetal malformation.
• Women with known thrombophilia

This study will be carried out on 90 pregnant women recruited at pre labour room at Ain Shams University Maternity Hospital. They will be divided into preeclamptic group and non preeclamptic group, 45 cases in each one