血けっ清せいけっせいFreq.FrequencyTop 50,000Meanings1nounserum; blood serummedicineMedical term for the clear liquid part of blood after clotting; used in contexts such as testing, therapy, and research.血けつ液えきから血けっ清せいを分ぶん離りする。Separate serum from the blood.この検けん査さには血けっ清せいが必ひつ要ようです。This test requires blood serum.