I also faced for a this kind of situation in 2011 at Asiri Surgical, I went to donate blood for a patient (based on e-mail request), but Asiri blood bank refused to get blood from me (I have donated more that 5 times by that time),
they said I have some issue with my red blood cells, Red cell count is more to the normal and because of that they said I have to consult a doctor and have to flush blood
But I did a Full Blood Count and check, Asiri People are totally wrong. I consult another doctor he said these people do like this.