When to see a doctor

By Mayo Clinic Staff

A test a healthcare professional orders to diagnose a condition can show a low white blood cell count. A low white blood cell count rarely is found by chance.

Talk to your healthcare professional about what your results mean. A low white blood cell count plus results from other tests might show the cause of your illness. Or you might need other tests to find out more about your condition.

A very low white blood cell count over time means you can get infections easily. Ask your healthcare professional about ways to stay safe from illnesses that pass from one person to the next. Wash your hands regularly and well. Think about wearing a face mask. Stay away from anyone with a cold or other illness.

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Feb. 19, 2026

See also

  1. Pediatric white blood cell disorders