You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Laboratory monitoring of which of the following is desirable with low molecular weight heparin therapy: March 2012 and explain in detail?
Ans: D i.e. anti-factor Xa activity Laboratory monitoring of anticoagulant LMW heparin selectively inhibit factor Xa with little effect on Ha. So LMW heparins have smaller effect on aPTT and whole blood clotting time. Since aPTT/clotting times are not prolonged, laboratory monitoring is not needed LMWH therapy is monitored by the anti-factor Xa assay, measuring anti-factor Xa activity.