THE PTT, OR APTT, IS A LABORATORY TEST USED TO MEASURE HOW LONG IT TAKES BLOOD TO CLOT. IT IS PRIMARILY USED TO EVALUATE THE INTRINSIC PATHWAY OF BLOOD COAGULATION, WHICH INVOLVES SEVERAL CLOTTING FACTORS. AN ABNORMAL PTT RESULT CAN INDICATE A DEFICIENCY OR DYSFUNCTION OF ONE OR MORE OF THESE CLOTTING FACTORS, LEADING TO BLEEDING OR CLOTTING DISORDERS. THE PTT TEST IS COMMONLY USED TO MONITOR ANTICOAGULANT THERAPY, SUCH AS HEPARIN OR LOW-MOLECULAR-WEIGHT HEPARIN, WHICH WORK BY PROLONGING THE CLOTTING TIME.

PROTHROMBIN TIME (PT) STUDIES ASSESS YOUR BLOODS CLOTTING ABILITY. IT MEASURES HOW LONG IT TAKES FOR A BLOOD CLOT TO FORM. THIS TEST IS ESSENTIAL FOR DIAGNOSING BLEEDING DISORDERS, MONITORING ANTICOAGULANT THERAPY LIKE WARFARIN, AND EVALUATING LIVER FUNCTION. BY ANALYZING CLOTTING FACTORS, PT HELPS DETERMINE IF YOUR BLOOD CLOTS TOO QUICKLY OR TOO SLOWLY, WHICH CAN INCREASE THE RISK OF BLEEDING OR BLOOD CLOTS.