In Contrast to Serum, blood plasma is isolated by spinning a tube of fresh blood containing an anticoagulant (e.g. sodium citrate) in a centrifuge until the blood cells fall to the bottom of the tube. Possible usages are cell cultures or immuno assays. Choose between different hosts, anticoagulants and sterility. If you have any further questions feel free to contact our customer support via phone, live chat or email.