No. Fasting is not required before the test. You may maintain your normal diet, but it is recommended to avoid strenuous exercise and inform your physician about any medications you are taking.

Test reports are typically available within 7–10 business days. The turnaround time may vary depending on specimen quality and laboratory analysis.

Yes. This test is suitable for individuals of all ages, including children. The need for testing should be determined by a physician based on the individual's health condition.

Abnormal B cell subset distribution or function may be associated with autoimmune diseases, immunodeficiency, chronic infections, or hematologic disorders. Further clinical evaluation is recommended.

Follow-up testing every 6–12 months is generally recommended to monitor changes in B cell populations, immune function, and treatment response.

The test requires only a small peripheral blood sample and is considered a low-risk procedure similar to a routine blood test.