I am from Canada and I donate blood every 56 days which is the mandatory wait time between donations.

I went to donate this morning and they tried to deter me away from donating due to my surgery in 48 days.

They dont think my body will regenerate enough of a hemoglobin count and Iron and will cause me to become anemic for surgery.

I was not warned about this from my doctor who knows I donate blood regularity and read nothing about this online.

I still went through my donation process

I have not read any negative things about surgery with an anemic issue.

Should I be concerned?

Any tips to help raise those levels besides greens, and daily Vitamins?

Chances are, they are not knowledgeable about the sleeve, and were assuming it was like the bypass. The sleeve doesn't have the malabsorbtion issues the bypass has. As long as you are taking your bariatric vitamins, especially the first 6 months or so, you should be fine.

I am working on getting the sleeve and my surgeon was very specific about not donating blood because after the sleeve it can be hard to keep your iron level up and especially after giving blood.