I had multi level lumbar fusion in Aug 23, and I refused blood transfusions or any other biological that may have spike proteins in it. From the research I did, the blood centers won't let anyone know if the blood you will be given has spike proteins from the jab. You CAN have blood privately donated but you have to pay the $200 or up cost to "sterilize" it. It's a long, complicated process to have it approved too. From all I read, the jab itself isn't the worry, it's the spike proteins in the blood. Research I read showed some people who get the jab never stop producing the spike proteins.