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www.mayoclinic.org/symptoms/high-red-blood-cell-count/basics/definition/sym...

A high red blood cell count is an increase in oxygen-carrying cells in your bloodstream. Red blood cells transport oxygen from your lungs to tissues throughout your body. A high red blood cell count can result from a condition that limits your oxygen supply or a condition that directly increases red blood cell production.

www.medicalnewstoday.com/articles/315133.php

White blood cells are vital components of the blood. Their role is to fight infection, and they are essential for health and well-being. A high white blood cell count may indicate that the immune ...

www.medicinenet.com/polycythemia_high_red_blood_cell_count/article.htm

Polycythemia is a condition in which the body's red blood cells are elevated. Primary polycythemia is caused by a changes in the body's JAK2 gene, but what causes this change is not known. Secondary polycythemia is caused by long-term exposure to low oxygen levels (for example, at high altitudes). Symptoms include fatigue, headache, itching, abdominal pain, and joint pain.

www.emedicinehealth.com/polycythemia_high_red_blood_cell_count/article_em.htm

Polycythemia is an increased number of red blood cells in the blood. In polycythemia, the levels of hemoglobin (Hgb), hematocrit , or the red blood cell (RBC) count may be elevated when measured in the complete blood count , as compared to normal.

www.steadyhealth.com/articles/what-does-high-white-blood-cells-count-indicate

A high white blood cell count (also called leukocytosis) isn't a specific disease but could indicate an underlying problem. This is why a high white blood cell count always requires further medical evaluation. A normal white blood cell count is between 4,500 and 10,000 cells per microliter: 5,000 to 10,000 for men and children; 4,500 to 11,000 ...

www.verywellhealth.com/red-blood-cell-rbc-count-1942659

The red blood cell (RBC) count is used to measure the number of oxygen-carrying blood cells in a volume of blood. It is one of the key measures we use to determine how much oxygen is being transported to cells of the body.

en.wikipedia.org/wiki/Red_blood_count

A complete blood count will normally include: White cells. Total white blood cells are reported, and a differential reports all the white cell types as a percentage and as an absolute number per unit volume. A high WBC may indicate an infection, leukemia or some other hematological disorder.

www.froedtert.com/benign-hematology/conditions/abnormal-blood-counts

Abnormal blood counts treatment at Froedtert Hospital in Milwaukee, ... In rare cases, an abnormal blood count can indicate an immune disorder or a cancer. ... (High Red Blood Cells) Polycythemia vera is a low-grade cancer marked by the overproduction of red blood cells.

www.mayoclinic.org/symptoms/high-red-blood-cell-count/basics/causes/sym-20050858

High red blood cell count may be caused by low oxygen levels, kidney disease or other problems. Low oxygen levels. Your body may increase red blood cell production to compensate for any condition that results in low oxygen levels, including: Heart disease (such as congenital heart disease in adults)

www.healthline.com/health/blood-cell-disorders

A blood cell disorder is a condition in which there’s a problem with your red blood cells, white blood cells, or the smaller circulating cells called platelets, which are critical for clot ...