Please note: The answers on constitute friendly advice rather than fatwas. Where relevant, we translate the opinions and fatwas of respected scholars and present them in our answers.

Do blood tests or donating blood nullify the fast?

I need to have a blood test will this invalid my fast that I’m making up for Ramadan?

The removal of blood from the bloodstream, whether for tests or for donation, does not affect the fast, so you can do that without issue.


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