An elevated platelet count of 0.34% can indicate the presence of hematologic disorders and other problems, but to determine whether there is anything wrong, it is necessary to combine with other tests. Clinically, the normal reference value of platelet pressure is 0.11% to 0.23%, and platelet pressure is considered to be elevated when it exceeds 0.23%. Therefore, the platelet pressure of 0.34% is already relatively obviously elevated, and it is necessary to consider whether it is caused by the disease. Clinically, elevated platelet pressure can be seen in massive vomiting, diarrhea caused by blood concentration, primary thrombocythemia, acute hemolysis. However, it is worth noting that high platelet count alone cannot diagnose whether a patient is suffering from a serious disease or not, but has to be combined with the patient’s specific clinical manifestations, as well as other auxiliary tests such as blood routine, myelocytology and other tests, which need the help of a professional doctor to be able to carry out. To summarize, to determine whether a high platelet count of 0.34% will be okay or not, we need to consider the patient’s situation, and it is recommended to consult a doctor in time when such a high value occurs.