Normally, basophils make up less than 1 percent of your circulating white blood cells. A healthy range is 0 to 3 basophils in each microliter of blood. A low basophil level is called basopenia. It can be caused by infections, severe allergies, or an overactive thyroid gland.

Is 0% basophils bad?

Basophils: Normal And Abnormal Ranges

This count can be as low as 0.5%. As an absolute count, an adult human should have 0 to 300 basophils per microliter of blood. There usually are no symptoms for an abnormal range of basophils.

What percentage of basophils is normal?

Normally, basophils account for 0.5% to 1% of your white blood cell count.