What should I do if my red blood cell count is elevated?
Feb 24, 2022
Source: Cainiu Health
Dr. Xu Min
Introduction
Severe vomiting, diarrhea, excessive sweating, or inadequate fluid intake can lead to hemoconcentration, potentially causing an elevated red blood cell count. In such cases, increasing fluid intake can help restore normal blood volume and dilute the red blood cells to within the normal range. For polycythemia vera, patients should consult a hematologist in the hematology department for appropriate diagnosis and treatment.
Clinically, a mild elevation in red blood cell (RBC) count typically has no significant impact on the body. For example, in a healthy individual, RBC counts may appear slightly elevated during morning fasting blood tests due to overnight fluid deprivation and consequent hemoconcentration. So, what should one do if RBC levels are elevated? Below, we address this question.
What to Do If Red Blood Cell Count Is Elevated
During routine health examinations or diagnostic testing for specific diseases, blood tests may reveal an elevated RBC count or hematocrit. What could cause this?
1. Severe vomiting, diarrhea, excessive sweating, or inadequate water intake can lead to hemoconcentration, potentially resulting in an elevated RBC count. In such cases, increasing oral fluid intake to rehydrate the body helps dilute the blood and restore RBC levels to normal.
2. Individuals residing at high altitudes—or those with chronic hypoxia due to conditions such as chronic heart disease or chronic lung disease—may develop secondary erythrocytosis due to tissue hypoxia. Treatment options include low-flow oxygen therapy or relocation to a lower-altitude environment, both of which can normalize RBC levels.
3. Certain malignancies—including hepatocellular carcinoma, lung cancer, renal cell carcinoma, and ovarian cancer—can induce paraneoplastic erythrocytosis. Management requires targeted treatment of the underlying tumor to resolve the elevated RBC count.
4. Polycythemia vera, a clonal hematologic disorder characterized by autonomous overproduction of RBCs, falls under the category of myeloproliferative neoplasms. Patients suspected of having this condition should be referred to a hematologist for specialized evaluation and management.
The above outlines key considerations and management strategies for elevated red blood cell counts. We hope this information is helpful to you.
