Does drawing blood with a medical needle invalidate ablution?

Answer: Taking blood with a needle does not invalidate ablution. The scholars of the school of thought said something similar about leech-like creatures, mosquitoes, and the like, if they absorb more than a drop from the body of the person performing ablution: It does not invalidate ablution.

From the fruits of knowledge and wisdom by the eminent scholar, Mr. Muhammad Abdullah Awad, may God protect him