3B63.10/D47.3 Secondary thrombocytosis



Secondary thrombocytosis is a condition in which the platelet count is higher than the normal range and is caused by an underlying health condition or a response to a certain drug. Possible causes of secondary thrombocytosis include certain types of anemia, cancer, infection, inflammation, autoimmune disorders, and certain medications.


Secondary thrombocytosis is diagnosed with a complete blood count (CBC) test. This test measures the number of platelets in the blood, as well as other components of the blood such as red blood cells and white blood cells.

Differential diagnosis

In order to differentiate secondary thrombocytosis from other causes of increased platelet counts, a doctor may need to perform additional tests to rule out other possible causes such as leukemia or other blood disorders.


Treatment of secondary thrombocytosis will depend on the underlying cause. If the cause is an infection or inflammation, treatment may involve antibiotics or other anti-inflammatory medications. If the cause is anemia or another blood disorder, treatment may involve medications to treat the underlying condition.


The prognosis for secondary thrombocytosis is generally good, as most cases can be successfully treated. The prognosis will depend on the underlying cause, as well as the response to treatment.

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