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 is the normal level of basophils in blood?

Normally, basophils account for 0.5% to 1% of your white blood cell count. A basophil level that is higher or lower than this amount can point to something irregular.