In some cases, if your results are significantly above or below the normal ranges, your doctor may refer you to a doctor who specializes in blood disorders hematologist. Results in the following areas above or below the normal ranges on a complete blood count may indicate a problem. Red blood cell count, hemoglobin and hematocrit. The results of your red blood cell count, hemoglobin and hematocrit are related because they each measure aspects of your red blood cells. If the measures in these three areas are lower than normal, you have anemia.
Anemia causes fatigue and weakness. Anemia has many causes, including low levels of certain vitamins or iron, blood loss, or an underlying condition. A red blood cell count that's higher than normal erythrocytosis , or high hemoglobin or hematocrit levels, could point to an underlying medical condition, such as polycythemia vera or heart disease. White blood cell count. A low white blood cell count leukopenia may be caused by a medical condition, such as an autoimmune disorder that destroys white blood cells, bone marrow problems or cancer.
Certain medications also can cause white blood cell counts to drop. If your white blood cell count is higher than normal, you may have an infection or inflammation. Or, it could indicate that you have an immune system disorder or a bone marrow disease. A high white blood cell count can also be a reaction to medication. For specifics about what your complete blood count results mean if they fall outside the normal ranges, talk to your doctor.
You should also keep in mind that some blood may pool under the skin, causing a bruise after the test. If you are scared of needles, you may experience general anxiety about the test. Some people who are prone to fainting may faint during the test or can feel lightheaded. In rare cases, excessive bleeding can be a more serious response to the test. Abnormal test results could be an indication of a serious health problem or a simple one that can be remedied by eating better or taking supplements.
These are some of the health problems that can be identified by a CBC:. Last Updated: September 8, This information provides a general overview and may not apply to everyone.
Talk to your family doctor to find out if this information applies to you and to get more information on this subject. However, if you have to travel, there are ways to decrease…. Visit The Symptom Checker. Read More. Blood Test: Lipid Panel. Pelvic Ultrasound. Rapid Strep Test. Abdominal Ultrasound. CT Head Scan. Other reasons your doctor may order a CBC can include: If you are ill and have a fever or if he or she suspects any kind of infection.
If you are tired or are losing weight without trying. If you have any sign of cancer, including general weakness, bruising, or bleeding. Normal complete blood count ranges depend on age and sex. A CBC can help diagnose a broad range of conditions, including anemia, infections and cancer. A complete blood count test is usually ordered by doctors to diagnose a suspected medical condition, to monitor a medical condition, or to monitor medical treatment.
Red blood cells are the most common blood cell, and contain hemoglobin, an important protein for transporting oxygen around the body. White blood cells are cells found in the blood that fight against viruses, bacteria and parasites. Platelets are tiny cell fragments that circulate through the body and make blood clot normally. Red blood cell count includes examining hemoglobin and hematocrit.
If the red blood cell, hemoglobin, or hematocrit counts are low, this indicates anemia. If these levels are higher than normal, this can indicate a medical condition such as polycythemia vera or heart disease. If the white blood cell count is high, this might be because of an infection or inflammation.
However, it can also indicate problems with the bone marrow or immune system, or a reaction to a medication. In contrast, a low white blood cell count may indicate an autoimmune disorder destroying white blood cells, white blood cell production issues, or even cancer. An abnormally high or low platelet count often indicates a medical condition.
It can also be due to side effects from medication. A CBC is a complete blood count, and offers a complete overview. This is why they are such a common test.
Some of the most common diseases a CBC detects include anemia, autoimmune disorders, bone marrow disorders, dehydration, infections, inflammation, leukemia, lymphoma, myeloproliferative neoplasms, myelodysplastic syndrome, sickle cell disease, thalassemia, nutritional deficiencies e.
Depending on the condition, CBC results often will not result in a diagnosis. Follow up tests may be done to properly determine the condition. What these tests will include depends on the abnormalities found, medical history, and the suspected condition.
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