Explanation: Yes, flu may affect on WBC. It could up or down. Urine test can be done if you want to be rule out UTI.
Answered 8/8/2016
1.1k views
Blood only: WBC can only be checked with a blood test and a flu or any viral illness can definitely affect it. I would advice waiting till the sickness has run its course before checking the WBC.
Answered 8/8/2016
1.1k views
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