Hello
The high WBC count can be due to benign cause like infections or some thing more serious like Leukaemia.Leukemias as well as many other myeloproliferative disorders the total leukocytic counts are above 20, 000 (commonly above 30, 000) at the time of diagnosis.I would recommend Differential leucocyte count to investigate this further.
Since you have history of sinus infections for 7 weeks is the most likely cause of raised WBC.
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