“…In chronic cases, initial laboratory examinations may include complete blood count, fasting blood glucose, erythrocyte sedimentation rate, C-reactive protein, kidney and liver function tests, urinalysis, and total serum Immunoglobulin-E levels. Additional tests such as antinuclear antibody, rheumatoid factor, complement C 3 and C 4 levels, thyroid hormones and autoantibodies, serology of Hepatitis viruses, Helicobacter pylori antigen, and fecal parasite examination can be performed if an infectious disease or an autoimmune disease is suspected [1,12].…”