❓Must one wash his hands after getting a blood test or donating blood?

Author: Rabbi Yaakov GoldsteinPublished: August 10, 2026

Must one wash his hands after getting a blood test or donating blood?[1] This is questionable. Practically it is best to wash hands. [1] Kaf Hachaim 4:91; Peri Megadim 4 A”A 22; However see Piskeiy Teshuvos 4:27 which brings in name of Rav SZ”A that one is not required to

Must one wash his hands after getting a blood test or donating blood?[1]

This is questionable. Practically it is best to wash hands.

[1] Kaf Hachaim 4:91; Peri Megadim 4 A”A 22; However see Piskeiy Teshuvos 4:27 which brings in name of Rav SZ”A that one is not required to wash hands.

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