Usage patterns
〈人〉の血液を採るto draw someone's blood
The doctor drew blood from the patient.
血液検査を受けるto undergo a blood test
I had a blood test as part of my health checkup.
血液が固まるblood clots
The blood at the wound clotted and stopped the bleeding.
血液が流れるblood flows (through the body/vessel)
Blood is flowing through the blood vessels.