Alsever's solution

Alsever's solution is a saline liquid used to prevent coagulation of blood.^[1][2] It is composed of 2.05% dextrose, 0.8% sodium citrate, 0.055% citric acid, and 0.42% sodium chloride. For usage, an equal volume of blood is gently, but thoroughly, mixed with the solution. This solution is used to study in vitro anti-inflammatory activity of crude drugs by the human red blood cell stabilization method.^[3] It is also used to preserve blood cells from other sources.^[4][5]

The test was invented in 1941 by the American Hematologist, John Bellows Alsever (1908–1978).^[6]