A blood smear is a type of blood test. It looks at the appearance, number, and shape of your red and white blood cells and platelets to see whether they are normal. A blood smear can also detect parasites in your blood. It is now more common to have blood analyzed by a computer.
What test requires a blood smear?
You may need a blood smear if you have abnormal results on a complete blood count (CBC). A CBC is a routine test that measures many different parts of your blood. Your health care provider may also order a blood smear if you have symptoms of a blood disorder.
Should the physician specifically request a review on the peripheral blood smear PBS )?
However, at present scenario the automated blood cell analyzers can provide fast and accurate measurements of cellular sizes and differential white blood cell counts with increasing workload, so routine manual PBS examination is no longer practiced in most modern laboratories.
What is the criteria for good blood smear?
The blood smear must not be too thin or too thick and the tail of the smear must be smooth. The perfect quality smear is influ- enced by three factors: speed, angle and drop size. thinner the smear will be. The slower the slide is moved, the shorter and thicker the slide will be.
Why is a good blood smear necessary for accurate counts?
From the clinical standpoint, blood smear examination serves 3 important objectives. First, it serves as a quality control tool in verifying the results generated by the automated analyzers. Second, it allows for identification of abnormal/immature/atypical cells, if present.
Whats the advantage of a blood smear compared to a CBC?
Unlike automated tests (such as a CBC), a technician or healthcare provider looks at a blood smear under the microscope in order to detect a wide range of changes that give clues to underlying diseases.
What does a blood smear test tell you?
A blood smear is a blood test used to look for abnormalities in blood cells. The three main blood cells that the test focuses on are: red cells, which carry oxygen throughout your body. white cells, which help your body fight infections and other inflammatory diseases.
What conditions can be evaluated using the peripheral blood smear?
Common clinical indications for peripheral blood film analysis include unexplained cytopenia: anaemia, leucopenia or thrombocytopenia; unexplained leukocytosis, lymphocytosis or monocytosis; unexplained jaundice or haemolysis; features of congenital haemolytic anaemias such as splenomegaly, jaundice or bone pains; …
What is CBC with smear review?
CBC (includes Differential and Platelets) with Smear Review – A complete blood count is used as a screening test for various disease states including anemia, leukemia and inflammatory processes.
What is a CBC smear review?
A blood smear is often used as a follow-up test to abnormal results on a complete blood count (CBC) to evaluate the different types of blood cells. It may be used to help diagnose and/or monitor numerous conditions that affect blood cell populations.
Why is a good blood smear is necessary for accurate counts?
What does an abnormal blood smear indicate?
A blood smear is considered normal when your blood contains a sufficient number of cells and the cells have a normal appearance. A blood smear is considered abnormal when there’s an abnormality in the size, shape, color, or number of cells in your blood.
What tests can be done with a blood smear?
Other tests that may be done in conjunction with a blood smear include: Reticulocyte count: A reticulocyte count is a measure of the number of immature red blood cells and is a good measure of how well the bone marrow is functioning Bone marrow aspiration and biopsy Chemistry panel (including kidney and liver function tests)
What can a blood smear tell you about your health?
The blood smear can reveal important information about many blood-related conditions as well as kidney disease, liver disease, and more. Sometimes a diagnosis can be made based on the blood smear alone (such as with hereditary elliptocytosis) 3 and other times further testing will be indicated.
When is a peripheral smear review indicated in the workup of anemia?
Review of the peripheral smear is not required in all patients with a hematological disorder. Certain straightforward conditions such as iron deficiency anemia can be easily diagnosed on the basis of clinical information and basic laboratory data (eg, mean corpuscular volume, serum iron, ferritin) alone.
What is a physician-initiated request for a blood smear?
A physician-initiated request for a blood smear is usually a response to perceived clinical features or to an abnormality shown in a previous complete blood count. A laboratory-initiated request for a blood smear is usually the result of an abnormality in the complete blood count or a response to “flags” produced by an automated instrument.
