People who have experienced chronic abdominal pain, diarrhea, fever, weight loss, and anemia may be examined for signs of Crohn's disease. In addition to a complete medical history and physical examination, diagnostic procedures for Crohn's disease may include: Blood tests.
The differential diagnosis of lymphocytopenia includes: 1  Infections, acute General acute infections. 2  Immunodeficiency AIDS. 3  Immune Systemic lupus erythematosis. 4  Endocrine ACTH. 5  Lymphatic circulation defects Intestinal lymphangectasia. 6  Medications Corticosteroids. 7  Miscellaneous Renal failure.
Lymphocytosis is usually detected when a complete blood count is routinely obtained. The absolute lymphocyte count (ALC) can be directly measured by flow cytometry, or calculated by multiplying the total white blood cell (WBC) count by the percentage of lymphocytes found in the differential count.