· Potassium salt of Edta was used as Anticoagulant.
· The inner surface of the tubes was prepared by spraying K3 Edta and drying.
· It is produced in various volumes.
· It is generally used in hematology tests in clinical chemistry laboratories.
· K3 Edta, which is used as an active ingredient, prevents the coagulation process of the blood by blocking calcium ions in the blood.

· With EDTA tubes; Hemogram, Reticulocyte, Formula Leukocyte, Blood Croup, Cross-match, Direct Coombs, Indirect Coombs tests are performed.
· In EDTA blood, blood smears can be made for erythrocy- te and leukocyte counts, determination of hematocrit and the formula of leukocyte. However, EDTA blood is not suitable for the determination of electrolyte and calcium