A medical test that analyzes blood drawn from a patient to diagnose disease or check health conditions (e.g., blood counts, chemistry).
健康診断で血液検査を受けたら、コレステロール値が高かった。
When I had a blood test during my health check, my cholesterol was high.
医師は症状を聞いたあとに血液検査を指示した。
After asking about my symptoms, the doctor ordered a blood test.
血液検査の結果は翌週に出る予定だ。
The results of the blood test are expected to come out next week.