noun, noun or participle which takes 'suru', intransitive verb
blood donation
Refers to the act of donating blood, typically at a blood center or bloodmobile. Commonly used as a noun or with する to mean 'to donate blood'.
昨日、初めて献血をしました。
I donated blood for the first time yesterday.
献血に行く前に、水分をたくさん取ってください
Please drink plenty of fluids before going to donate blood.