BST requires for its activity, to provide plasma derivatives to hospital pharmacies for the treatment of patients who require it. Since one of the main activities provided by the Blood Bank is the supply of plasma derivatives (blood products), it is necessary to contract for this exercise and the next one, since without this benefit the care activity cannot be carried out optimally that BST has entrusted.

Hiring of the supply of blood products obtained by industrial fractionation of human plasma collected by the BST for obtaining plasma derivatives for therapeutic use and the subsequent making available of these blood products to the BST.