Partial thromboplastin time (PTT, PTT/INR)
Reading time: 1 minute
PTT and PTT/INR are coagulation tests - the TT test can be used to measure coagulation in general when assessing the risk of bleeding, while the INR test can be used in the follow-up of oral anticoagulant therapy. An effort is made to standardize the INR assay in the laboratory so that values determined using different reagents and de...