Fanconi anemia (FA) is a genetic disorder that ultimately leads to bone marrow failure. Your bone marrow is responsible for making three different types of blood cells in your body. These include red blood cells, which bring oxygen to your tissues and organs, white blood cells, which fight infections, and platelets, which promote blood clotting to stop bleeding. FA test is generally conducted by a genetic test via a blood sample. It is natural for your blood cells to die. If your bone marrow isn’t replacing dead blood cells, you’ll develop bone marrow failure.