Blood Loss. Blood loss is the most common cause of anemia, especially iron-deficiency anemia. Blood loss can be short term or persist over time. Heavy menstrual periods or bleeding in the digestive or urinary tract can cause blood loss. Surgery, trauma, or cancer also can cause blood loss.
second most common cause of acid-base imbalance. recognized by low blood pH and HCO3- levels. indicated by rising blood pH and HCO3- levels, is much less common than metabolic acidosis. typical causes are vomiting of the acidic contents of the stomach and intake of excess base.
Most often, the uric acid level in the blood becomes abnormally high when the kidneys cannot eliminate enough uric acid in the urine. This cause is usually determined by the person's genes. Too much uric acid in the blood can result in uric acid crystals being formed and deposited in and around joints.