How to Cite: Tahseen, Y. H., Amin, K. M., Ali, O. S., Jirjees, S. Y., & Salman, Y. J. (2022). Study the changes in vitamin D3, magnesium, phosphorus, parathyroid hormone and calcium levels among women positive for SARS-2 n COVID-19 concerning rubella infection. International Journal of Health Sciences, 6(S5), 9427–9443. https://doi.org/10.53730/ijhs.v6nS5.11978 International Journal of Health Sciences ISSN 2550-6978 E-ISSN 2550-696X © 2022. Manuscript submitted: 9 April 2022, Manuscript revised: 18 June 2022, Accepted for publication: 27 July 2022 9427 Study the changes in vitamin D3, magnesium, phosphorus, parathyroid hormone and calcium levels among women positive for SARS-2 n COVID-19 concerning rubella infection Yildiz Hasan Tahseen Kirkuk-Medical College. Assist Prof Clinical Biochemistry Khalidah Mohammed Amin Kirkuk-Medical College. Assist Prof. Gynecologist and obstetrician Ola Salih Ali Tikrit Educational Office. Ph.D. Parasitologist Sarab Yahya Jirjees Kirkuk Health office. Assist senior Lab. Technologist Yahya Jirjees Salman Kirkuk-Medical College. Prof. Clinical Microbiologist Corresponding author email: dr.yahyajirjeessalman@yahoo.com Abstract---Background: After February 2020, SarsnovelCovid-19 became pandemic; therefore, Iraqi people were implicated in this enigma. Rubella infection in women in Kirkuk Provence as Bad Obstetric History (BOH) was more common. Suspecting co-infection for these two viruses' infections and the changes in the women's body like Vitamin D, Calcium, Magnesium, and other biochemical changes. Aims: this current study was carried on to assess and grant that. Setting: a cross-sectional observational study on 154 women of childbearing age with approved SARS n-covid-19 by real-time PCR was enrolled as a test group. Versus 45 women negative for covid with previous BOH were taken as a control group, and their ages ranged from 15 to 50 years. Methodology: Rubella IgM and IgG antibodies using ELISA kits were used for each woman. Vitamin D3, Parathyroid hormone (PTH) ELISA kit also used. For determining serum Calcium, Magnesium, and Phosphorus, routine spectrophotometry biochemical kits were tested. Results: The rate of Rubella infection was 77.92% IgG, contributed to 77.92 % of Rubella IgM versus 72.27 %. Controversy to the following rates 35.56 % and 8.88% of IgG and IgM