血けっ清せい診しん断だんけっせいしんだんMeanings1nounserodiagnosisMedical term for diagnosis based on serum analysis, such as antibody testing.感かん染せん症しょうの確かく定ていには血けっ清せい診しん断だんが用もちいられる。Serodiagnosis is used to confirm infectious diseases.