Reformed churches have no teaching prohibiting blood transfusions or other medical uses of blood products. The biblical prohibitions on consuming blood (e.g., Acts 15:29; Leviticus 17:10–14) are understood in Reformed hermeneutics as pertaining to eating blood as food or as a ceremonial/purity regulation in the Mosaic context, not to medical procedures such as transfusions.

Reformed theology embraces medicine as a legitimate field of human endeavor that reflects God's general grace and common kindness toward creation. The use of available medical treatments to preserve life and reduce suffering is consistent with the Reformed theology of vocation and stewardship of the body as God's gift. There is no controversy within Reformed churches on this question.