Determine your blood type quickly and easily with the Eldon Card blood type self-test. The test determines both your blood type and Rh factor. Knowing your blood type is advantageous in many situations. It is particularly important during surgeries, blood transfusions, and prenatal care. Determining the Rh factor is also helpful, for example, during pregnancy if the child has a positive Rh factor while the mother has a negative one. During childbirth, blood can mix and trigger an antigen-antibody reaction. Warning: Do not use to determine blood type prior to a transfusion. The blood type test kit comes with detailed instructions. Discreet shipping to protect your privacy – no one outside your package can see the contents. All products are additionally packaged in opaque material inside your box, ensuring discretion even in case of damage.