Prothrombin time (PT)/international normalized ratio (INR) is the primary blood test to diagnose vitamin K deficiency. This simple blood test measures the time it takes for blood to clot ...

If your diet is lacking in vitamin K, ahead you'll find nine foods high in vitamin K. Parsley delivers a jumbo dose of the ...

a Patient had a surgical procedure in April for which his warfarin was discontinued for five days. b During this visit, the patient was prescribed prednisone 10 mg orally daily and his warfarin ...