[Performance] White crystal powder, odorless, soluble in water, easy to absorb moisture, molecular weight of 404.6, pH value of 4.8±1 (5% aqueous solution, g/ml), solubility in water ≥ 60% (g/ml, 25℃). Stable at room temperature. The main content of EDTA in our company is ≥ 99.0%. See the product test report for other indicators.  

[Scope of application]EDTA salt can protect the cellular components of the blood, does not affect the white blood cell count and size, has the least effect on the morphology of the red blood cell , and can inhibit the aggregation of platelets, which is suitable for general hematological test. Except for the isolation and examination of platelets, it is not suitable for coagulation test and platelet kinetic energy test, nor for the determination of calcium, potassium, sodium, iron, alkaline phosphatase, creatine kinase and leucine amino peptidase and PCR test.

International Committee for hematology Standardization (ICSH) recommended dipotassium EDTA as anticoagulant for blood cell count and classification. Compared with tripotassium EDTA, it has lower solubility and slower anticoagulation speed. 

[Precautions]

The key to the preparation of the whole blood test specimen is the complete anticoagulation, so the blood must be reversed 5 ~ 8 times as soon as possible to prevent the formation of tiny blood clots. In particular, when the ambient temperature of blood collection is higher than 25℃, the mixing of blood and dipotassium EDTA must be timely and sufficient, or it may easily lead to blood coagulation or local coagulation.

The anticoagulation of EDTA salt is not irreversible, so the test should be completed within 24 hours after blood collection in EDTA anticoagulation test tube, otherwise the test result may be wrong. The preservation time of EDTA salt anticoagulant samples was 48 hours at 4 ℃ and no more than 24 hours at 23 ℃ for white blood cells counting. When used for platelet counting, it can be stored for 24 hours at 4 ℃.