Whats a blood smears?

Last Update: April 20, 2022

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Asked by: Ms. Myrna Lakin IV
Score: 4.5/5 (25 votes)

A blood film—or peripheral blood smear—is a thin layer of blood smeared on a glass microscope slide and then stained in such a way as to allow the various blood cells to be examined microscopically.

What does a blood smear do?

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.

What causes a blood smear?

These abnormalities are often caused by a mineral or vitamin deficiency, but they can also be caused by inherited medical conditions, such as sickle cell anemia. White blood cells are an integral part of your body's immune system, which is a network of tissues and cells that help your body fight infection.

What is human blood smear?

A blood smear is a sample of blood that's tested on a specially treated slide. For a blood smear test, a laboratory professional examines the slide under a microscope and looks at the size, shape, and number of different types of blood cells.

How do you do a blood smear test?

  1. Place clean glass slide on a flat surface. Add one small drop of blood to one end.
  2. Take another clean slide, and holding at an angle of about 45 deg, touch the blood with one end of the slide so the blood runs along the edge of the slide by capillary action. ...
  3. Make 2 smears, allow to air dry, and label clearly.

Making and staining blood smears

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