Platelet count normal range

Thrombocytosis, or a high platelet count, is diagnosed when platelet levels are greater than 450,000 platelets per microliter of blood. Many times, a high platelet count doesn’t cause any symptoms or mean something serious is going on. However, having a high platelet count can lead to clotting problems and, in some cases, may be associated with serious conditions, like cancer. While these conditions and circumstances tend to result in a high platelet count returning to normal, if these aren't treated, monitored, or managed appropriately, they can lead to more concerning risks. Short-Term Conditions Certain short-term conditions can lead to a high platelet count. However, this is temporary, with platelet counts tending to return to normal quickly. Examples include: High Platelet Count in a Child Pre-term infants are often born with high platelet counts. In most cases, this is not something to worry about as it tends to resolve on its own a few weeks after birth. In older children, high platelet counts are usually a result of infection and also resolve once the infection passes. Surgery or Trauma Surgeries and trauma can lead to a high platelet count. For example, spleen removal surgery, or a splenectomy, is significantly associated with secondary thrombocytosis, impacting up to 90% of individuals who undergo this procedure. Associated high platelet levels tend to last about three months before they return to normal. Summary Having a high platelet count, or thrombocytosis, d...