U.S. doctors online nowAsk doctors free
A 47-year-old female asked:

What's small cd5 positive b cell population representing 0.4% of total leukocytes?

1 doctor answer1 doctor weighed in
Dr. Nancy Mckinney
Hematology and Oncology 21 years experience
Likely nothing: Monoclonal B cell lymphocytosis is a small population of malignant lymphocyte in the blood. A level of 0.4% is tiny, and likely not going to turn into anything bad. However, these cells are the type that make up chronic lymphocytic leukemia (in far higher numbers)and small lymphocytic lymphoma. It would be good to rule out lymphoma, and follow blood counts every 3-6 months. No treatment needed.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Dec 28, 2017


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.