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Percentage of B cells is high. Is it leukemia?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

Here are my immunohistochemical results of peripheral blood:

Absolute lymphocyte count 5812/uL reference (1000 to 3300) with CD19 (B cells) 62 percent reference (3 to 20 percent), CD45 positive, CD10 positive, and CD5 negative.

How do we know if it is leukemia or not?

Doctors in our town cannot interpret the result. The percentage of B cells is highly abnormal.

Please help.

Thank you.

Answered by Dr. Goswami Parth Rajendragiri

Education:

MBBS

Professional Bio:

Dr. Goswami Parth Rajendragiri is an experienced General Physician and Pathologist with extensive years of clinical expertise. He specializes in diagnosing and managing a wide range of medical conditions while providing holistic care to patients. As a Pathologist, he is skilled in performing and interpreting laboratory investigations that aid in accurate diagnosis and treatment planning. Dr. Rajendragiri is dedicated to delivering patient-focused care with a strong emphasis on preventive medicine and overall well-being.

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome to icliniq.com.

At the age of 55 years, if persistent lymphocytosis is seen, then CLL (chronic lymphocytic leukemia) should be ruled out. For that, monoclonality should be confirmed by flow cytometry investigation and requires a bone marrow study apart from a peripheral smear examination report if needed.

In CLL, usually, the peripheral smear examination report shows smudge cells and more than 90 percent lymphocytes. So, provide a peripheral smear examination report, a bone marrow aspiration study report, and a flow cytometry report if available.

The mentioned markers are of B cells, but CD5 is negative, so further workup is needed, as mentioned.

I hope this will help you.

Thank you.

Medically reviewed by iCliniq medical review team
Published At January 27, 2018
Reviewed At April 15, 2026

Education:

MBBS

Professional Bio:

Dr. Goswami Parth Rajendragiri is an experienced General Physician and Pathologist with extensive years of clinical expertise. He specializes in diagnosing and managing a wide range of medical conditions while providing holistic care to patients. As a Pathologist, he is skilled in performing and interpreting laboratory investigations that aid in accurate diagnosis and treatment planning. Dr. Rajendragiri is dedicated to delivering patient-focused care with a strong emphasis on preventive medicine and overall well-being.

This doctor is not available for online consultations on the platform anymore.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Education:

MBBS

Professional Bio:

Dr. Goswami Parth Rajendragiri is an experienced General Physician and Pathologist with extensive years of clinical expertise. He specializes in diagnosing and managing a wide range of medical conditions while providing holistic care to patients. As a Pathologist, he is skilled in performing and interpreting laboratory investigations that aid in accurate diagnosis and treatment planning. Dr. Rajendragiri is dedicated to delivering patient-focused care with a strong emphasis on preventive medicine and overall well-being.

This doctor is not available for online consultations on the platform anymore.

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