My mother s wbc is high, bilirubin is high, hgb is 6.8 and falling despite 2 units of blood. Bun was fine but now elevated, Bun/creatinine ratio is now elevated. The hospital Dr dx her with hemoletic anemia. Said it is an autoimmune problem. They Don t know what is causing it. Can you tell me reasons why this could be happening. They have ruled our rx medications, travel, food, and environmental triggers.