What is the normal prothrombin level?

The normal prothrombin time (PT) typically ranges from 11 to 13.5 seconds, reflecting the time it takes for blood to clot. Prothrombin levels can be expressed in International Normalized Ratio (INR), with a normal INR range generally between 0.8 and 1.1 for individuals not on anticoagulant therapy. Values outside this range may indicate clotting disorders or the need for further medical evaluation. Always consult a healthcare provider for personalized assessment and interpretation of results.