Complete blood count may indicate anemia (acute or chronic blood loss or malabsorption of iron, folate, or B₁₂), leukocytosis (inflammation), eosinophilia (parasitic, neoplastic, and inflammatory bowel diseases). Serum levels of calcium, albumin, iron, cholesterol, folate, B₁₂, vitamin D, and carotene; serum iron-binding capacity; and prothrombin time can provide evidence of intestinal malabsorption or maldigestion.