What is a slide blood test?
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. These include: Red blood cells, which carry oxygen from your lungs to the rest of your body. White blood cells, which fight infection.
What are blood slides used for?
How is the blood smear used? 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.
How do you make a blood sample slide?
- Place clean glass slide on a flat surface. Add one small drop of blood to one end.
- 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.
- Make 2 smears, allow to air dry, and label clearly.
Why is the slide called a blood smear?
It consists of a fluid called plasma and cells (formed elements) that are suspended in the plasma. The slide from which this image was prepared was a blood smear–it was made by putting a drop of blood on one end of a slide, and using a second slide to spread the blood into a thin, uniform layer over the slide.
What is a normal hemo slide number?
14.5–24.5 g/dL or 145–245 g/L. In general, a normal hemoglobin level is about one-third the value of the hematocrit. Red blood cell indices footnote 1. Mean corpuscular volume (MCV)—Adults: 84–96 femtoliters (fL)
What does a normal blood smear look like?
Normal Results Red blood cells (RBCs) normally are the same size and color and are a lighter color in the center. The blood smear is considered normal if there is: Normal appearance of cells. Normal white blood cell differential.
How are blood smear made?
A blood smear is made by placing a drop of blood on one end of a slide, and using a spreader slide to disperse the blood over the slide’s length. The aim is to get a region, called a monolayer, where the cells are spaced far enough apart to be counted and differentiated.
What is blood smear technique?
The most common technique of blood smear preparation is called the “wedge or push” technique. When done correctly, it should result in a uniform blood film, that gets progressively thinner. A small drop of blood is placed on the midline at the end of a glass slide.
What is normal blood smear?
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 is blood smear interpretation?
What do the results mean? 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 shows infection in CBC?
White blood cell count. 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.
Why is blood smear done?
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 does low MCV MCH MCHC and high RDW and RBC mean?
a high RDW and typical MCV suggests an iron, B12, or folate deficiency, or possibly chronic liver disease. a high RDW and low MCV suggests iron deficiency or microcytic anemia. a high RDW and high MCV indicates a lack of B12 or folate, macrocytic anemia, or chronic liver disease.
What is normal MCHC?
Normal Results MCHC: 32 to 36 grams/deciliter (g/dL) or 320 to 360 grams per liter (g/L)
What is a normal CBC count?
Results
| Red blood cell count | Male: 4.35-5.65 trillion cells/L* (4.35-5.65 million cells/mcL**) Female: 3.92-5.13 trillion cells/L (3.92-5.13 million cells/mcL) |
|---|---|
| Hematocrit | Male: 38.3-48.6 percent Female: 35.5-44.9 percent |
| White blood cell count | 3.4-9.6 billion cells/L (3,400 to 9,600 cells/mcL) |
Can CBC detect viral infection?
In summary, the CBC cannot be used in isolation to differentiate bacterial from viral illness. The CBC can, however, augment clinical data from the history and physical examination to predict the likelihood of serious bacterial illness.
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.
Why is Leishman stain used?
Atlas Leishman’s stain is used for staining of blood and bone marrow. It is generally used to differentiate and identify leucocytes, malaria parasites, and trypanosomas (unicellar parasitic protozoa). It is based on a mixture of methylene blue and eosin.
How do you read a blood smear?
Scan the smear at low magnification (10x objective). A WBC count can be estimated (with practice) when scanning across the smear (feathered edge through monolayer through body of smear). Check the feathered edge: Look for platelet clumps, large cells or infectious agents.
What is MCHC in CBC?
Doctors use information from the CBC to calculate your MCH. A similar measure to MCH is something doctors call “mean corpuscular hemoglobin concentration” (MCHC). MCHC checks the average amount of hemoglobin in a group of red blood cells. Your doctor may use both measurements to help in a diagnosis of anemia.