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<h3 id="n-blood-letting-1">N. Blood Letting: [1]</h3>
<p>[One who lets blood from his shoulders is required to wash his hands one time immediately afterwards.<a href="#_ftn2" name="_ftnref2">[2]</a>] If one does not wash his hands after letting blood from his shoulders, he will have inner fear for seven days without knowing the source of the fear.</p>
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<p><strong><em>Q&amp;A</em></strong></p>
<p><strong>Must one wash his hands after getting a blood test or donating blood?<a href="#_ftn3" name="_ftnref3">[3]</a></strong></p>
<p>This is questionable. Practically it is best to wash hands.</p>
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<p><strong>If one touched blood is he required to wash his hands?<a href="#_ftn4" name="_ftnref4">[4]</a></strong></p>
<p>No.</p>
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<p><a href="#_ftnref1" name="_ftn1">[1]</a> Admur 4:19; See Sefer Shemiras Haguf Vihanefesh [Lerner] 54:24 footnote 41; This is due to the impure spirit which resides on the hand after bloodletting. This applies according to all Poskim. [See Halacha 2 in footnotes]</p>
<p><a href="#_ftnref2" name="_ftn2">[2]</a> Ketzos Hashulchan 2:11</p>
<p><a href="#_ftnref3" name="_ftn3">[3]</a> 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.</p>
<p><a href="#_ftnref4" name="_ftn4">[4]</a> Piskeiy Teshuvos 4:27</p>
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Shulchan Aruch HaRav | 4n. Washing hands after Blood Letting

N. Blood Letting:[1] ] If one does not wash his hands after letting blood from his shoulders, he will have inner fear for seven days without knowing the source of the fear.