Lab tests: There is no blood test that can confirm that a person has atrial fibrillation . However, blood tests may be done to check for certain underlying causes of atrial fibrillation and to rule out heart damage, as from a heart attack.
Lab tests: There is no blood test that can confirm that a person has atrial fibrillation . However, blood tests may be done to check for certain underlying causes of atrial fibrillation and to rule out heart damage, as from a heart attack.