<prompt> The anticoagulant of choice for performing coagulation studies is -EDTAHeparinTri sodium citrateDouble oxalate  <response>: The most commonly use anticoagulant for in vitro Coagulation Studies is Citric Acid.It is generally employed in the form of Sodium Citrate.In Vitro use of anticoagulantsFor coagulation studies-Sodium CitrateFor Hematological studies-EDTAFor estimation of ESRWintrobes method-Double oxalate.Westergren method-Sodium Citrate. 