Nishmat's Women’s Health and HalachaIn memory of Chaya Mirel bat R' Avraham

  • Hebrew
  • English
  • Espnaol
  • Francais

IVF and blood test on Shabbat

4 April, 2005


I am about to start IVF procedures. There is a schedule of injections, blood tests and sonograms. Depending upon when I get my period, it is possible that I might have to have a blood test on shabbos. I won’t know until probably the day of or before. Can I do this? If I can’t, the entire previous 3 weeks of medications and tests will be a waste and I will not be able to proceed with the retrieval. This will likely happen any time I try to do IVF. Thank you.


It would be preferable, if at all possible, to check with your doctor about scheduling the blood test for immediately before or immediately after Shabbat.

Should a situation arise in which there is no alternative, please consult a Yoetzet Halacha Fertility Counselor to clarify how best to proceed. (This is a free service, details here.).

Behatzlacha with your treatment!

This response was updated on 13 April, 2021.

This internet service does not preclude, override or replace the psak of any rabbinical authority. It is the responsibility of the questioner to inform us of any previous consultation or ruling. As even slight variation in circumstances may have Halachic consequences, views expressed concerning one case may not be applied to other, seemingly similar cases. All health and health-related information contained within Nishmat's Women's Health & Halacha Web site is intended to be general in nature and should not be used as a substitute for consulting with your health care professional. The advice is intended to offer a basis for individuals to discuss their medical condition with their health care provider but not individual advice. Although every effort is made to ensure that the material within Nishmat's Women's Health & Halacha Web site is accurate and timely, it is provided for the convenience of the Web site user but should not be considered official. Advice for actual medical practice should be obtained from a licensed health care professional.

For further questions or comments: 

The Nishmat Women's Health and Halacha Site is a public service of Nishmat, The Jeanie Schottenstein Center for Advanced Torah Study for Women. This project and others like it are made possible by contributions from people like you. If you have benefited from the service, and wish to enable us to help others, click here to donate.

Users of Internet filtering services: This site discusses sensitive subjects that some services filter without visual indication. A page that appears 100% complete might actually be missing critical Jewish-law or medical information. To ensure that you view the pages accurately, ask the filtering service to whitelist all pages under