IVIG infusion

I have not had this, but isn't it blood plasma from donors?

Hopefully someone else knows more about this.

Until they can test blood better, I don't want someone else's blood unless I am dying.

I just don't want something else on top of lyme.

Isn't this IVIG infusion quite expensive too? And I have not read of many getting this until all antibiotics have been given a chance to work first.

I really should not respond because I have not read up on this sufficiently.