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What does it indicate if a person has a high RBC count?

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

Patient's Query

Hello doctor,

I have attached a report as part of my regular annual check-up. My free RBC (red blood cell) indicators are very high, and when I researched a bit, it pointed to PCV (packed cell volume) and leukemia. I am apprehensive. As a follow-up, I also tested for LDH (Lactate dehydrogenase). It was average at 172. Please tell me what your opinion is. I am scared.

Please guide.

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.

Hi,

Welcome to icliniq.com.

I understand your concern. Following is my opinion of your asked questions. I have seen the attached report (attachments removed to protect the patient's identity). It shows borderline high hemoglobin, high PCV, and RBC mass. So it could be polycythemia. But it does not necessarily indicate any cancer. Dehydration, smoking, lung disease, and cardiac disease can cause secondary polycythemia. So let me know if any of such history is present. Your lymphocyte count is also high, usually seen in some chronic inflammation or viral infection.

Consider drinking lots of water, and if any smoking habit or clinical complaint is present, let me know. It would help if you repeated your CBC (complete blood count) after a few days to check your lymphocyte count and hematocrit value again after a few days. Peripheral smear report shows normal morphology of white blood cells, so the possibility of blood cancer is less. Hope this information will help you. Let me know if you have more questions in mind.

I hope this helps you.

Thank you.

Patient's Query

Hello doctor,

Thank you for the reply. I do not smoke now. I quit two years ago and have not smoked after that. I also got an LDH (Lactate dehydrogenase) test done. It was 178 IU/L. Regarding polycythemia, is it some form of blood cancer? What should I do about it? I do not have any viral infection symptoms for many months now. I am average and working out fine. So is polycythemia cancer or a disorder?

Please guide me on the next steps.

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 back to icliniq.com.

The following are my different opinions. Polycythemia is of two types. Primary polycythemia is a blood cancer, and secondary polycythemia is a benign disorder secondary to causes, as mentioned in the previous answer. Consider drinking lots of water and investigating with chest X-ray and EKG (electrocardiogram) to rule out secondary polycythemia.

After a few days, repeat your CBC (complete blood count). Suppose hemoglobin, RBC (red blood cells), and PCV (packed cell volume) is elevated after a few days. In that case, serum EPO (erythropoietin) estimation, bone marrow aspiration, and further investigation are needed, for which you need to visit a hematologist.

Hope this helps. Kindly revert for further queries.

Thank you.

Medically reviewed by Dr. K. Shobana
Published At November 30, 2022
Reviewed At June 17, 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.

Education:

BDS

Professional Bio:

Dr. K. Shobana is a Dental Surgeon specializing in oral health and dental care. She is skilled in preventive dentistry and provides oral hygiene education. She can do restorative treatments such as fillings and crowns. She can handle periodontal problems such as gum diseases and periodontitis. She can do root canal treatment.

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!

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Decision Helper
High RBC Count Decision Helper

Is your high RBC count a concern?

This quick check helps you understand potential reasons for an elevated red blood cell count and whether you should consult a doctor for further investigation.

  • Polycythemia can be primary (a blood cancer) or secondary (a benign disorder).
  • Secondary causes include dehydration, smoking, lung disease, and heart conditions.
  • This tool is for guidance only and not a diagnosis.

Medications should be taken after consulting a physician. The dosages will be prescribed by the physician. Do not alter, start, or stop medications without consulting a healthcare professional.

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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