A 90-year-old woman with a fractured neck of femur is receiving low-molecular-weight heparin (LMWH). Which of the following statements regarding LMWH is true?
It has molecular weight below 4000 d. Its anticoagulant effect is by binding to antithrombin III. It should be administered two to three times a day. It has lower bioavailability than standard heparin.