Platelet thrombocyte count. Mean platelet volume MPV. There are many other reasons that a doctor may want this blood test, including to: Find the cause of symptoms such as fatigue, weakness, fever, bruising, or weight loss. Check for anemia. See how much blood has been lost if there is bleeding. Diagnose polycythemia.
Check for an infection. Diagnose diseases of the blood, such as leukemia. Check how the body is dealing with some types of drug or radiation treatment. Check how abnormal bleeding is affecting the blood cells and counts. Screen for high and low values before a surgery. See if there are too many or too few of certain types of cells. This may help find other conditions. For instance, too many eosinophils may be a sign of an allergy or asthma. A blood count can give valuable information about the general state of your health.
How To Prepare In general, there's nothing you have to do before this test, unless your doctor tells you to. How It Is Done A health professional uses a needle to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all from the needle. Risks There is very little chance of having a problem from this test. Results Normal Each lab has a different range for what's normal.
Blood smear results Normal: Blood cells are normal in shape, size, color, and number. High values Red blood cells RBC. Conditions that cause high RBC values include smoking, exposure to carbon monoxide, long-term lung disease, kidney disease, some cancers, certain forms of heart disease, alcohol use disorder , liver disease, a rare disorder of the bone marrow polycythemia vera , and a rare disorder of hemoglobin that binds oxygen tightly.
Conditions that affect the body's water content can also cause high RBC values. These conditions include dehydration , diarrhea or vomiting, excessive sweating, and the use of diuretics.
The lack of fluid in the body makes the RBC volume look high. This is sometimes called spurious polycythemia. White blood cells WBC, leukocytes. Conditions that cause high WBC values include infection, inflammation, damage to body tissues such as a heart attack , severe physical or emotional stress such as a fever, injury, or surgery , kidney failure, lupus , tuberculosis TB , rheumatoid arthritis , malnutrition, leukemia , and diseases such as cancer.
The use of corticosteroids , underactive adrenal glands , thyroid gland problems, certain medicines, and removal of the spleen can also cause high WBC values. You can reassure them that bodies make new blood all the time and that their body will not run out of blood. Parents or caregivers can help distract children during blood tests to help make it easier for them. Toddlers 1 to 2 years might like to watch bubbles or toys that move or make sounds, such as magic wands, light-up toys or pinwheels.
They may want to hold their favourite toy. Preschoolers 3 to 5 years may want to hold a favourite toy or watch toys that light up and make sounds. Teenagers 13 to 18 years can try deep breathing or imagining their favourite place. They also might want to hear a joke or story. Preparing a child for a blood test depends on the age and experience of the child. Find out more about helping your child cope with tests and treatments. Home Treatments Tests and procedures Complete blood count cbc.
Complete blood count CBC. Why a CBC is done. How a CBC is done. A CBC is usually done in a community lab or hospital. Side effects. What the results mean. Common terms used to describe CBC results are: anemia — not having enough healthy RBCs or hemoglobin leukopenia — a low number of WBCs neutropenia — a low number of neutrophils leukocytosis — an increased number of WBCs thrombocytopenia — a low number of platelets thrombocytosis — an increased number of platelets CBC results can be low or high for many reasons.
Abnormal RBC counts. A low RBC count may be due to: anemia due to prolonged bleeding or blood loss hemorrhage , a diet lacking iron or certain vitamins, certain types of chemotherapy, blood disorders or chronic disease Hodgkin lymphoma and other lymphomas cancers of the blood, such as leukemia and multiple myeloma some myeloproliferative disorders A high RBC count may be due to: dehydration, such as from severe diarrhea kidney tumours lung diseases polycythemia vera a myeloproliferative disorder.
Abnormal WBC counts. A low WBC count may be due to: viral infection severe bacterial infection bone marrow suppression caused by treatments like chemotherapy or radiation therapy bone marrow diseases, such as leukemia or myelodysplastic syndrome MDS anemia A high WBC count may be due to: infection leukemia some myeloproliferative disorders some types of cancer, such as bronchogenic carcinoma certain drugs, such as colony-stimulating factors stress, allergies or tissue injury.
Abnormal platelet counts. A low platelet count may be due to: some types of cancer, such as leukemia or lymphoma autoimmune diseases bacterial infection viral infection chemotherapy or radiation therapy having many blood transfusions certain drugs, such as nonsteroidal anti-inflammatory drugs NSAIDs including acetylsalicylic acid ASA, Aspirin, salicylate and ibuprofen Motrin, Advil, Nuprin A high platelet count may be due to: prolonged bleeding or blood loss hemorrhage anemia from low iron levels infection inflammation surgical removal of the spleen splenectomy polycythemia vera some types of leukemia.
What happens if the results are abnormal. A CBC is a safe and common test for many conditions. Doctors may provide one as part of a routine checkup. Many conditions affect the number and characteristics of red and white blood cells and platelets. A CBC can determine if these changes are different from what they should be and whether or not they require attention.
White blood cells are vital for immune system functioning. In this article, learn about what types there are and what can affect them. Anemia is the most common blood disorder. The body does not have enough red blood cells and is unable to deliver enough oxygen around the body.
A low red blood cell count, or anemia, causes many symptoms and complications. People can increase their red blood cell count with lifestyle changes…. Blood circulates throughout the body, transporting substances essential to life.
Here, learn about the components of blood and how it supports human…. Platelets are an essential component of the blood because they help with clotting. Natural ways to increase platelet count include dietary changes…. What is a complete blood count?
Medically reviewed by Alana Biggers, M. What is a CBC? What does it measure? Normal blood count ranges. This sample will be processed at a lab for review. There is no special diet that needs to be followed prior to this CBC test. You are encouraged to eat and drink as you normally would to see how your routine diet affects your blood.
The test will take only a few minutes, after which you can get back to your daily work. The amount of blood taken is not enough to make you dizzy. If the provider has ordered other blood work along with CBC then you may need to fast. There is nothing special needed to be done prior to the test. This will mostly be done in the morning, so the doctor might ask you to come for the test on an empty stomach.
In very rare cases, the doctors provide special instructions on how the test will be conducted. When you get a CBC done, your report will have two columns. The higher or lower your result when compared to the reference range the doctor will provide you with proper assessment and plan for the same. In many cases, mild anemia is the cause of a difference in the reference range and your result.
Be aware that each lab has a different reference range and how they compare the two. Different factors can easily affect your blood. These factors include your age, sex, as well as height above sea level.
A CBC is never taken as a definitive diagnostic tool. It only helps the doctor to understand the levels of certain blood cells. If a person is being treated for a specific condition, a CBC test usually followed up with other tests that help with the diagnosis of that condition. Your doctor will suggest the required tests based on your CBC report.
A CBC may also be done before a treatment is recommended to help understand how your body might react to it. A CBC is useful to evaluate the overall health status of a person. There are very low to absolutely no risks associated with a CBC test.
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