It is used in the production of antitoxins and antivenoms (for example treatments against snake bites diphtheria or tetanus) where horses are immunized and their serum is harvested for protective antibodies.Donor horse serum is used as a supplement in cell culture media to promote the growth and maintenance of cells in vitro. It plays a role in manufacturing vaccines and biological products.

The purpose of donor horse serum is to supply essential nutrients hormones and growth factors to maintain and support the survival proliferation and differentiation of cultured cells in laboratory research.

Donor horse serum is a sterile cell-free liquid derived from the blood of healthy horses. It contains proteins growth factors and nutrients essential for supporting cell growth in vitro.