This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
Route of administration of LMWH for prophylaxis of thrombosis in a patient who had undergone surgery few hours back is: 
Select and explain. 
A. Subcutaneous, B. Intravenous, C. Inhalational, D. Intramuscular
A: Subcutaneous
Answer: A: Subcutaneous 
Explanation: Ans. (A) i.e. Subcutaneous(Ref: Goodman Gilman 13thed; pg. 589)LMWH and fondaparinux can be used by subcutaneous route once a day for both treatment and prophylaxis of thrombosis.Unfractionated heparin can be used by subcutaneous route twice a day for prophylaxis and by intravenous route four times a day for treatment of thrombosis.