My answer to What could cause an low basophil count?

Answer by Connie b. Dellobuono:

Basophil count can be too low in if you are suffering from a severe allergy or hyperthyroidism. A low basophil count can also occur if you are pregnant, ovulating, stressed or taking corticosteroids.

Basophils Function, High, Low Basophil Count

What could cause an low basophil count?