How to separate antibodies from human blood?

To separate antibodies from human blood, a common method is to use serum separation techniques. First, blood is drawn and allowed to clot, after which it is centrifuged to separate the liquid serum from the cellular components. The serum, which contains antibodies, can then be collected. Further purification may be achieved using techniques like protein A/G affinity chromatography or ion-exchange chromatography to isolate specific antibodies from the serum.