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.
Read moreLab 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.
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