If we combine this information with your protected information is beneficial, we may combine your email and website usage information with High red blood cell count doesnt always show symptoms. Our website services, content, and products are for informational purposes only. Mayo Clinic offers appointments in Arizona, Florida and Minnesota and at Mayo Clinic Health System locations. National Heart, Blood, and Lung Institute. In others, the cause may be related to diseases or drugs that increase the production of RBCs. American Society of Clinical Oncology. If you have this medical condition, it means that your bone marrow is producing too many red blood cells. Dietary supplement fact sheet: Vitamin C. Office of Dietary Supplements. A complete blood count test measures the following: Red blood cells, which carry oxygen White blood cells, which fight infection Hemoglobin, the oxygen-carrying protein in red blood cells A systematic analysis of global anemia burden from 1990 to 2010. Polycythemia or high red blood cell count occurs when there is an increase in the number of RBCs in the blood over the above-mentioned values. For example, your RBC count may be low if you are pregnant or menstruating, or if you aren't getting enough iron in your diet. Dietary supplement fact sheet: Folate. In this procedure, a needle is inserted into your vein to draw blood into a designated container or bag. health information, we will treat all of that information as protected health Anemia and polycythemia. The Red Cell Distribution Width (RDW) Blood Test, How Chronic Lymphocytic Leukemia (CLL) Is Staged, Complete Blood Count (CBC) Normals and Abnormals, Red Blood Cell Membrane Disorders: What to Know, Hemoglobin changes after long-term intermittent work at high altitude, Misuse of performance-enhancing drugs that stimulate RBC production, such as, Renal cell carcinoma, a type of kidney cancer, Drug side effects, including chemotherapy, Deficiency of erythropoietin, a kidney hormone that promotes RBC growth, Hemolysis, the abnormal breakdown of red blood cells, Platelets (PLT), the cells responsible for blood clotting. Certain drugs, viruses, toxins, or radiation may also cause aplastic anemia. A complete blood count, or CBC, measures several components of your blood and can help diagnose a broad range of conditions, from anemia and to cancer. Sometimes we also talk about polycythemia vera (primary and secondary). If your blood sample also will be used for other tests, you might need to fast for a certain amount of time before the test. Red blood cells are essential for life. Find doctors & request online appointments. What cancers cause high red blood cell count? Mostly, polycythemia itself is a symptom of an underlying disease. Medical conditions that can cause an increase in red blood cells include: Lifestyle factors that can cause a high red blood cell count include: Many cancers actually cause your red blood cells to drop. All Rights Reserved. You may feel moderate pain or a sharp pricking sensation when the needle enters your arm. Anemia of inflammation or chronic disease. These symptoms may be due to the anemia itself or the cause of anemia. Last reviewed by a Cleveland Clinic medical professional on 04/25/2022. You can find out more about our use, change your default settings, and withdraw your consent at any time with effect for the future by visiting Cookies Settings, which can also be found in the footer of the site. Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press. privacy practices. Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press. Blood. (2020). This content does not have an English version. Last medically reviewed on February 16, 2022. Our expert general medicine specialists verify the clinical accuracy of the content to deliver the most trusted source of information, making the management of health an empowering experience. A low RBC count can indicate a serious problem, but not always. https://www.nhlbi.nih.gov/files/docs/public/blood/anemia-yg.pdf. Hematologic aspects of parasitic diseases. Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. A high red blood cell count may indicate that you have a condition that's preventing you from getting enough oxygen. In The Big Picture Physiology: Medical Course & Step 1 Review. They can also result in unusual RBC levels. https://ods.od.nih.gov/factsheets/Folate-HealthProfessional/. Yes dehydration increases the number of red blood cells. What Does a High Red Blood Cell (RBC) Count Mean? Accessed Oct. 26, 2022. If you are a Mayo Clinic patient, this could This way, your healthcare provider can find the cause and determine if treatment is necessary. When the RBC, hemoglobin, and hematocrit count are below the established normal range, the patient is said to be anemic. 3. It's used to look at overall health and find a wide range of conditions, including anemia, infection and leukemia. Int Jnl Lab Hem. 7th ed. If you have erythrocytosis, you may need a regular phlebotomy. Is a 3.92 RBC low? McGraw Hill; 2022. https://accessmedicine.mhmedical.com. Too many red blood cells can make your blood thick and sluggish and increase your risk of blood clots and complications such as heart attack and stroke. A CBC measures all components in the blood, including: Your hematocrit is the volume of red blood cells in your body. Mayo Clinic on Incontinence - Mayo Clinic Press, NEW The Essential Diabetes Book - Mayo Clinic Press, NEW Ending the Opioid Crisis - Mayo Clinic Press, FREE Mayo Clinic Diet Assessment - Mayo Clinic Press, Mayo Clinic Health Letter - FREE book - Mayo Clinic Press. Hoffman R, et al. the unsubscribe link in the e-mail. Mayo Clinic, Rochester, Minn. Sept. 10, 2015. To provide you with the most relevant and helpful information, and understand which Loscalzo J, et al. You can have elevated red blood cell count for months or years without noticing it. This content does not have an Arabic version. The number of red blood cells stays the same. Copyrights - 2020. http://www.uptodate.com/home. Carbon monoxide exposure (usually related to smoking). Advertising revenue supports our not-for-profit mission. Causes By Mayo Clinic Staff Low oxygen levels, misuse of certain drugs and blood cancers can cause a high red blood cell count. Anemia and polycythemia. Accessed Nov. 30, 2015. There are many possible causes for anemia. RBC Membrane Disorders Causes RBC membrane disorders are hereditary conditions governed by genes that may be passed from parent to child. These conditions include: An abnormally functioning kidney due to renal disease, kidney transplant, and kidney cancer can cause the production of too much erythropoietin, which enhances the production of red blood cells. Red blood cell count: An unrecognized risk factor for nonalcoholic fatty liver disease. If you have chronic kidney disease, you might produce less EPO than normal. Accessed Dec. 4, 2015. If you have cancer, kidney failure or another chronic condition, you could be at risk of anemia of chronic disease. Accessed Dec. 4, 2015. Diagnostic tests, such as ultrasounds or electrocardiograms, can look for conditions affecting the kidneys or heart. This is called anemia. Amber J. Tresca is a freelance writer and speaker who covers digestive conditions, including IBD. These include any over-the-counter (OTC) drugs or supplements. 2nd ed. The three main types of blood cancer are: Your doctor will discuss any abnormal results with you. Signs and symptoms, if they do occur, might include: Fatigue Weakness Pale or yellowish skin Irregular heartbeats Shortness of breath Dizziness or lightheadedness Chest pain Cold hands and feet Headaches At first, anemia can be so mild that you don't notice it. These are often symptoms of an abnormal RBC count. http://www.nhlbi.nih.gov/health/health-topics/topics/anemia/. Ford J. Lifestyle and health factors can also cause an increase in the red blood cell count. These factors place you at increased risk of anemia: Chronic conditions. (n.d.)https://www.lls.org/managing-your-cancer/lab-and-imaging-tests/understanding-blood-counts, High Red Blood Cell Count. For people assigned male at birth, 4.7 million to 6.1 million red blood cells per microliter of blood. The number of red blood cell will also be more concentrated. Save my name, email, and website in this browser for the next time I comment. The cause of secondary polycythemia is the result of external factors such as sleep apnea, hypoxia, and certain tumors, affecting red blood cell production. Get doctor-approved health tips, news, and more. If you have a high red blood cell count, its important to talk to your healthcare provider. 5 causes for a low red blood cell count. American Association for Clinical Chemistry/Lab Tests Online. Anemia is a condition in which you lack enough healthy red blood cells to carry adequate oxygen to your body's tissues. You'll soon start receiving the latest Mayo Clinic health information you requested in your inbox. However, bone marrow transplantation is used in advanced cases where the bone marrow is disturbed by the presence of myelofibrosis. https://www.uptodate.com/contents/search. Many cancers actually cause your red blood cells to drop. A high red blood cell count is generally considered to be anything above 6.1 million red blood cells for males, 5.4 million for females, and 5.5 for children. What does a higher than normal RBC count mean? If we combine this information with your protected Anemia and polycythemia. Men: RBC count shouldn't exceed 6.1m/mm3. Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. The main job of red blood cells is to move oxygen from the lungs to the rest of the body. These include: Leukemia & Lymphoma Society. "Mayo," "Mayo Clinic," "MayoClinic.org," "Mayo Clinic Healthy Living," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research. Sign up for free, and stay up to date on research advancements, health tips and current health topics, like COVID-19, plus expertise on managing health. For example, results slightly outside the typical range on a CBC might not be of concern for someone who's healthy and has no symptoms of illness. A high red blood cell count is an increase in a type of cells made in bone marrow and found in blood. Exercise to improve your heart and lung function. You'll soon start receiving the latest Mayo Clinic health information you requested in your inbox. You might be able to prevent some types of anemia by eating a healthy, varied diet. information submitted for this request. Hoffman R, et al. These could include: A CBC will often be part of a routine physical exam. Advertising on our site helps support our mission. By Amber J. Tresca https://www.uptodate.com/contents search. A red blood cell count is a blood test that your doctor uses to find out how many red blood cells (RBCs) you have. The following are expected complete blood count results for adults. Please consult your healthcare provider for the interpretation of your test results. Sign Up For The Latest Healthy Living Updates. All rights reserved. Mayo Medical Laboratories. Mayo Clinic on Incontinence - Mayo Clinic Press, NEW The Essential Diabetes Book - Mayo Clinic Press, NEW Ending the Opioid Crisis - Mayo Clinic Press, FREE Mayo Clinic Diet Assessment - Mayo Clinic Press, Mayo Clinic Health Letter - FREE book - Mayo Clinic Press, Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic School of Continuous Professional Development, Mayo Clinic School of Graduate Medical Education, Essential Thrombocythemia: Looking for information and support. 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