Introduction

BioGnost’s Hayem’s solution is used in routine manual counting of erythrocytes. It is important to correctly prepare and dilute the sample of blood in the specified volume during every counting method. Basic advantages of Hayem’s solution (compared to other solutions for erythrocyte counting) are isotonicity (no hemolysis occurs), fixation (erythrocytes do not lose their shape, no autolysis occurs, so counting may be conducted a few hours after blood dilution). Hayem’s solution also prevents agglutination and has a longer shelf life.