Diagnosis typically involves a combination of medical history, physical examination, and laboratory tests. Important aspects include:
- History and Physical Examination: Detailed history of recurrent infections, growth patterns, and exposure to risk factors. - Laboratory Tests: Blood tests to evaluate white blood cell counts, immunoglobulin levels, and specific antibody responses. - Specialized Testing: In some cases, more specific tests such as lymphocyte proliferation assays or flow cytometry may be required.