Abstract
Pseudothrombocytopenia (PTCP) is a relatively rare phenomenon in vitro, the mechanism is not completely clear, and there is no unified solution for it. How to identify and solve PTCP accurately is a challenge for laboratory personnel. According to the patient's clinical manifestations, thrombocytopenia caused by hypersplenism was excluded. PTCP was confirmed by platelet volume histograms, scattergrams and platelet clumps on the blood smears. Commonly used alternative anticoagulants such as sodium citrate or heparin were used for platelet counting. The corrective effect of the platelet count was not good, so non-anticoagulant blood was collected and tested immediately, and blood smears were used to count platelets manually. The PTCP of the patient could not be solved using sodium citrate and heparin anticoagulation. By collecting non-anticoagulant blood and testing immediately, the platelet count returned to normal (180 x 109/L), which is consistent with the results of manual counting on the patient's blood smears (175 x 109/L). When PTCP is confirmed, commonly used alternative anticoagulants can be used. If these do not work, non-anticoagulant blood can be collected and tested immediately, and blood smears can be used to count platelets manually.
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