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US 6,475,801 B1Granted
Anticoagulant and hemanalysis method
AssigneeSysmex Corporation
InventorsMikiko Nishizaki, Yasumasa Akai, Sayaka Nakamura
Life of this patent
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Abstract
An anticoagulant for blood cell counting containing at least two kinds of the following antiplatelet agents: theophyllines, adenosines and dipyridamoles. The anticoagulant also contains citric acid, an alkali metal salt thereof or a mixture of citric acid and an alkali metal salt thereof.
Claims1
A hemanalysis method comprising:
- adding, to a blood sample, a dry anticoagulant comprising at least two kinds of antiplatelet agents selected from the group consisting of theophyllines, adenosines and dipyridamoles, as well as citric acid, an alkali metal salt thereof or a mixture of citric acid and an alkali metal salt thereof,
- counting at least two kinds of blood cells selected from the group consisting of leukocytes, erythrocytes and platelets in the blood sample, and
- carrying out a blood coagulation test to determine prothrombin time or fibrinogen.
Dependencies are inferred from the claim text.