Both these test are used to evaluate the functioning of blood clotting factors (I, II, V, VII, X). These test are useful for the diagnosis of uncontrolled bleeding and abnormal clot formation. The international normalized ratio (INR) is calculated based on the findings of PT and is used for monitoring and dose adjustments in patients undergoing anticoagulant therapy (blood-thinning medicine, warfarin). The symptoms that lead to recommendation of this test include myocardial infarction, thrombosis, irregular heartbeats, excessive bleeding.
LabEspy recommends Walk-In Lab, Ulta Lab Tests, Direct Labs for this test.