Learn about Blood Film Comment/Peripheral Blood Film medical tests, including what the tests are used for, why a doctor may order a test, how a test will feel, and what the results may mean.
Blood film comment is a blood test used to look for abnormalities in blood cells. The three main blood cells that the test focuses on are:
The test provides information on the number and shape of these cells, which can help doctors diagnose certain blood disorders or other medical conditions.
To evaluate your red blood cells (RBCs), white blood cells (WBCs), and platelets, to distinguish between the different types of WBCs, and to determine their relative percentages in the blood; to help detect, diagnose, and/or monitor a range of deficiencies, diseases, and disorders involving blood cell production, function, and lifespan. The blood smear test is often done to diagnose conditions that are causing:
A blood sample drawn from a vein in your arm or by pricking a finger, ear or, in the case of an infant, a heel. You may want to wear a shirt with sleeves that can easily be rolled up to make it easier to collect the blood sample. This usually takes less than five minutes.
The results of a blood smear typically include a description of the appearance of the red blood cells, white blood cells, and platelets as well as any abnormalities that may be seen on the slide.
Red Blood Cells (RBCs) | |
---|---|
Normal Result | |
Size | Uniform in size (7-8 µm in diameter) |
Nucleus | Absence |
Shape | Appear pink to red in color with a pale center |
Colour | Round and flattened like a donut with a depression in the middle instead of a hole (biconcave) |
Abnormal Result | |
Anisocytosis | Variable sizes of red blood cells may indicate anemia |
Poikilocytosis | Various shapes of red cells |
Anisopoikilocytosis | Variability in both RBC size and shape |