The case of a 24-year-old man who sustained a 100% body surface area burn and inhalation injury is presented. Hemoglobinuria reappeared 2 hours after haptoglobin was first administered. In addition to individualized fluid resuscitation and plasma administration, a large dose of haptoglobin was repeatedly administered while we monitored for occult blood in the centrifuged urine. As a result, postburn shock and acute renal failure were prevented.