Before Testing
Will being sick or having a cold impact the results of my blood test?
Last updated August 13, 2026
Hello there! Firstly, we hope you feel better soon :)
Yes, common cold can affect blood test results. For example, it might cause your white blood cell count to rise because your body's busy fighting off the infection. Sometimes, these higher levels can stick around even after your cold is gone. So you might consider doing the test when you feel better (that's also safer for the lab staff & other patients).
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