White blood cells show how your immune system is reacting and can hint at infection or inflammation.
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Clinicians order a WBC count to check immune activity, investigate symptoms like fever or fatigue, and monitor recovery from illness. It also helps track effects of medicines that affect the bone marrow, such as chemotherapy or steroids. Results can guide follow-up tests like a differential or repeat testing. You can test this marker with Aniva across Germany and Finland.
Clinicians order a WBC count to check immune activity, investigate symptoms like fever or fatigue, and monitor recovery from illness. It also helps track effects of medicines that affect the bone marrow, such as chemotherapy or steroids. Results can guide follow-up tests like a differential or repeat testing. You can test this marker with Aniva across Germany and Finland.
High: Often rises with infections, inflammation, stress, smoking, pregnancy, or steroid medicines; can be temporarily elevated after hard exercise.
Low: Can occur with viral illnesses, certain medicines, vitamin deficiencies, autoimmune conditions, or bone marrow suppression. If your result is unexpected, a repeat test and a WBC differential can add clarity. Share recent illnesses, workouts, and medicines with your clinician.
Common factors that can skew results include recent infections, strenuous exercise, emotional stress, smoking, dehydration, pregnancy, and high altitude. Medicines such as corticosteroids, lithium, beta-agonists, clozapine, and some antibiotics can raise or lower counts. Poor sample handling or delays can also affect the result.
Special situations (when to confirm or adjust): repeat after recovery from acute illness or hard exercise; discuss adjustments during pregnancy, chemotherapy, or immunosuppressive therapy; consider a differential for context.
What does my WBC result mean in simple terms? It shows how active your immune system is. Higher or lower counts can reflect infection, inflammation, medicines, or bone marrow activity.
Do I need to fast for a WBC test? No fasting is needed. Drink water and follow any instructions from your clinician.
What can temporarily change my WBC count? Recent illness, hard workouts, stress, smoking, pregnancy, and some medicines (like steroids or lithium) can shift results.
How often should I test WBC? It depends on your symptoms and care plan. Many people test only when unwell or when a clinician is monitoring treatment.
How long do results take? Most labs report within 1–2 business days. Timing may vary with additional tests like a differential.
What should I discuss with my clinician? Share recent infections, exercise, and all medicines or supplements. Ask if you need a WBC differential or a repeat test for confirmation.
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