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A peripheral blood smear (PBS) test is a technique healthcare providers use to examine your red and white blood cells and your platelets under a microscope. Your healthcare provider may order a peripheral blood smear along with a complete blood count (CBC).
Examination of the peripheral blood smear is an inexpensive but powerful diagnostic tool in both children and adults. In some ways, it is becoming a "lost art," but it often provides rapid, reliable access to information about a variety of hematologic disorders.
The results of a blood smear can help diagnose a variety of issues, from anemia to cancer. The test may be done if you have an abnormal complete blood count (CBC) or symptoms of an infection or blood disorder.
Evaluation of a peripheral blood smear can help exclude factors that may interfere with abnormal CBC readings. Familiarity with the reference range is based on local laboratory parameters and to interpret any abnormalities in the clinical context.
The CBC with differential cascade will be performed as follows: 1) Run CBC through analyzer. 2) Apply flags and rules to generate smear. 3) Medical laboratory scientist reviews smear. 4) If criteria met, pathologist reviews smear.
Blood smear. Peripheral smear; Complete blood count - peripheral; CBC - peripheral. A blood smear is a blood test that gives information about the number and shape of blood cells. It is often done as part of or along with a complete blood count (CBC).
Along with a CBC, your provider might order a peripheral blood smear, which gives them more information about how your blood cells look under a microscope. What’s a CBC with differential? A CBC with differential means that the lab also counts each different type of white blood cell and immature (not-yet-fully-developed) blood cells.
A CBC is a routine test that measures many different parts of your blood. Your health care provider may order a blood smear if you have symptoms of a blood disorder, such as: Fatigue. Jaundice, a condition that causes your skin and eyes to turn yellow. Unusual bleeding, including nosebleeds. Fever that lasts, or comes and goes. Bone pain. Anemia.
You should get a blood smear if your complete blood count (CBC) and/or automated WBC differential results are abnormal. Also, take this test when you have signs and symptoms that a health care practitioner suspects are due to a condition affecting your blood cells.
Peripheral Blood Smear. During this procedure, a sample of blood is checked for blast cells, number and kinds of white blood cells, number of platelets, and changes in the shape of the blood cells.