describe the characteristics of a good peripheral blood smear

The manual peripheral blood smear Whilst the manual differential count is generally considered to be superior to an analyser generated count for pathologi-cal samples, this only holds true under very strict conditions. Characteristics of good smear : 1.Surface should be even and uniform ,margins should not extend to the side of the slide. 30×) than in an equal area of a thin smear. A blood smear is often used as a follow-up test to abnormal results on a total blood count (CBC) to evaluate the various types of blood cells. List the causes of a poor blood smear preparation. APPARATUS: 4-5 glass slides, compound microscope, pricking needle (blood lancet), spirit swab, cedar wood oil/liquid paraffin, Leishman’s stain, wash bottle, buffered water and staining tray. It might be used to help identify and/or keep an eye on numerous conditions Erythrocyte Morphology, Platelet evaluation, Quantitative White Blood Cells. All liver function tests were abnormal indicating that the target cells are due to liver disease secondary to CD. The peripheral blood film remains a very useful tool in hematological assessment. Ann Biol Clin (Paris). If you continue browsing the site, you agree to the use of cookies on this website. With the advent of hematological automated machines, complete and highly accurate hematological data and parameters like complete blood count or CBC can be obtained within a few minutes. Peripheral Blood Smear DR. ANWAR H. SIDDIQUI 2. Peripheral Blood Smear Test Procedure The blood smear test is a simple procedure in which your health care provider draws a blood … A polychrome stain, contains methylene blue and eosine dye dissolved in methyl alcohol. cells, prompting peripheral blood smear evaluation. Osmotic fragility & rbc membrane defects 050916, No public clipboards found for this slide. Bone Marrow (not performed by IDC). No area contains large amounts of broken cells or precipitated stain. Two main conditions will affect the viscosity of the blood. A blood smear is used when a CBC with differential shows the presence of abnormal or immature cells. Peripheral blood film or Peripheral blood smear or Peripheral smear examination forms an important and basic lab investigation for diagnosing a number of hematological (blood) disorders. A good wedge smear should cover half to three fourths of the slide, should show gradual transition from a thick to a thin end with a feathered edge. A blood smear evaluates red blood cells (RBC morphology) white blood cells (WBC) and platelets to help diagnose PROCEDURE FOR PREPARING AN IDEAL SMEAR ⇒ Take a Clean, Grease free microscopic glass slide and mark the smear area on the underside of the slide with a glass marking pencil. 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. Describe the techniques for making peripheral blood films. Attention to detail in slide preparation, staining and standard criteria for cell estimates, morphology and differential reporting enhance the value of 1. The peripheral blood smear was consistent with a leukoerythroblastic pic-ture with normocytic You can have a pap smear with an IUD in place. The shape of blood film 9. LIst the components of peripheral blood smear examination. 3. Normal, mature RBCs are biconcave, disc-shaped, anuclear cells measuring approximately 7-8 microns in diameter on a peripheral blood smear with an internal volume of 80-100 femtoliters (fL). Good Blood Smear - Margin free with distinct lateral edge, Smooth Appearance, Placed centrally on the slide, Has uniform distribution of leukocytes, Whole drop of blood is picked up and spread, Has gradual transition from thick to thin ,When held up to light has a rainbow appearance. You can change your ad preferences anytime. Clinical Case Study Fatigued: A Case on Blood Download Case Study with Worksheet Harold is a 67-year-old male who has had regular physical exams, is a non-smoker, and who has been in good health for most of his life. Peripheral Blood Smear 1. Use either Push wedge method or Automated method to prepare blood smear. Improper timing of staining or buffering, Deteriorated reagent. Different Dyes stain various cell componets with different color. 2. Understand the purpose of performing a peripheral blood smear examination. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. In patients with anemia, the 3. Cell Size (immature cells are larger), Nuclear to cytoplasmic ratio (relative and absoluate size of the nucleus decreases as a result of nuclear maturation) , RBC's (nucleus and other organelles disappear), Nucleus (Young nucleus is reddish and bcome bluer as cell ages, chromatin is fine and lacy and becomes coarse, clumped and condensed as cells mature), Cytoplasm (Granulocyte matures from non granulated to specific granules which differs in dye affinity, granules increase in number). In peripheral blood film (PBF), neutrophils showed characteristic C-shaped, fetus-like nuclei, elongated nucleoplasm, and ring-shaped nuclei. A lymphocyte is a type of white blood cell in the vertebrate immune system. 2. Clipping is a handy way to collect important slides you want to go back to later. Sufficient reading area ADVERTISEMENTS: ii. It is often done as part of or along with a complete blood count (CBC). Decrease in the amount of thrombocytes seen in acute leukemia , radiation therapy. State the components and function of a Wright's Stain. If you are using venous blood, blood smears should be prepared as soon as possible after collection (delay can result in changes in parasite morphology and staining characteristics). There are many reasons why your doctor may order a blood smear. A. A peripheral blood smear is a glass microscope slide coated on one side with a thin layer of venous blood.The slide is stained with a dye, usually Wright’s stain, and examined under a microscope[1]. Characteristics of A Good Smear 1. A peripheral smear test can be used to diagnose, monitor numerous conditions and blood diseases that affect population of blood cells. [1] Lymphocytes include natural killer cells (which function in cell-mediated, cytotoxic innate immunity), T cells (for cell-mediated, cytotoxic adaptive immunity), and B cells (for humoral, antibody-driven adaptive immunity). Looks like you’ve clipped this slide to already. A blood smear is considered abnormal when there’s an abnormality in the size, shape, color, or number of cells in your blood. 3.Film should not be too thin or too thick . 4. Peripheral Purpose and Criteria for Blood Smear Scan, Blood Smear Examination, and Blood Smear Review.pdf Available via license: CC BY-NC 3.0 Content may be subject to copyright. Anemia, morphology, red blood cell, poikilocytosis, peripheral smear SUMMARY The foundation of laboratory hematologic diagnosis is the complete blood count and review of the peripheral smear. 11. Does not cover the entire area of the slide. Blood Smear The blood smear demonstrated hypersegmented neutrophils (panels A,C), macrocytes (panel B), and red blood cell fragments (panels A,C). List the characteristics of a good blood smear Good Blood Smear - Margin free with distinct lateral edge, Smooth Appearance, Placed centrally on the slide, Has uniform distribution of leukocytes, Whole drop of blood is picked up and spread, Has gradual transition from thick to thin ,When held up to light has a rainbow appearance. It should have a smooth appearance and have no ridges, holes, lines, streaks or clumps. Prolonged storage of anticoagulated blood specimen, Delay in spreading the blood drop, Dirty and poor quality glass slide, Inappropriate size of blood drop, Improper angle of the pusher slide, Improper pressure/speed, High Humidity. 2.Smear should be tongue shaped . If RBCs are bright red it indicates stain or buffer is too acid, drying is incomplete before staining, Staining time is insufficient or inadequate. Increase in the amout of thrombocytes, seen in blood loss and after surgery. A blood smear involves looking at a sample of blood under the microscope after applying special stains and looking for abnormalities or changes in red blood cells, white blood cells, and platelets. Bacteria, Babesia or Malaria, Stain Precipitates. Does not It consists of an outer body tube and an inner draw tube which can slide inside the outer, eye piece and lower part carrying a revolving … Fingerstick- Best sample (no anticoagulant effect), 2. The smear shows numerous target cells and a spur cell (top right). Exercise 9: Preparation of Peripheral Blood Smears Blood viscosity (thickness of blood) will vary from patient to patient. Has both thick and thin areas with gradual transition. Describe the optimal area for evaluating and enumerating blood cells on a well stained smear. Burkitt cells on a peripheral blood smear: how to deal with? We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Proper Preparation of a Peripheral Blood Smear Objectives At the completion of this laboratory, you will be able to: 1. A blood smear is a blood test that gives information about the number and shape of blood cells. An IUD does not interfere with the ability to get a good sample. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. In this video I quickly go over how to make a peripheral blood smear. However, microscopic evaluation of peripheral blood smears affords clinicians additional data that may be used to guide diagnosis and treatment. Two push-type peripheral blood smears suitable for characterization of cellular blood elements. Microcytic when the size is smaller than normal RBC and these are less than 6 µm. ADVERTISEMENTS: A well prepared blood smear is necessary for microscopic examination of blood. Understand the general rule of cell identification. BLOOD SMEAR BASICS JENNIFER A. NEEL, DVM, DACVP (CLINICAL) ASSOCIATE PROFESSOR, CLINICAL PATHOLOGY NC STATE COLLEGE OF VETERINARY MEDICINE RALEIGH, NC, … Describe the blood specimen and procedure for preparing a blood smear. Flame the slide and place it on the disinfected table. 1. Explain the factors, which affect the quality of stained blood smear, including sources of error in the technique. RBCs are not quite touching and have a central pallor. Describe different erythrocyte inclusions, their etiology and their clinical significance. Left smear is unstained, right smear is stained with Wright-Giemsa stain. The purpose of preparation of blood smear (blood film} is to study the morphology of RBCs, differential leukocyte count and reticulocyte count. 2016 Dec 1;74(6):697-703 Authors: Wyrwas M, Michel J, Guibaud I, Lesesve JF, Bénet B Abstract The diagnosis of double hit lymphoma remains a challenge for the biologist for a good management of the patient. blood smear. Normochromic when the color is normal. State the appropriate sample used for preparing a peripheral blood smear. To determine white blood cells population and distribuation is within normal limits, and also assess the RBC and platelet morphology. Examining the monolayer of a well-prepared and properly stained blood smear allows veterinary technicians to assess erythrocyte (RBC), leukocyte (WBC) and platelet morphology. Any condition which causes an increase in the Mild monocytosis (900/μL) along with the persistent lymphopenia was also noted. Abnormal results may vary depending on the type of blood cell affected. Blood smears are used to determine leukocyte differentials, to evaluate erythrocyte, platelet and leukocyte morphology, and, if necessary, to estimate platelet and leukocyte counts. List the characteristics of a good blood smear. Some of these include:1 1. to further evaluate abnormalities found on a complete blood count (CBC) such as a high or low red blood cell count, white blood cell count, or platele… A pap smear does not affect your fertility. 3. If red blood cells appear blueish or green indicates stain or buffer is too alkaline, smear is too thick, Prolonged Staining. Desirable qualities of a blood smear include: i. Compound Microscope 1 3. Thick smears The blood elements (including parasites, if any) are more concentrated (app. Parts of the Compound Microscope Tube It is cylindrical tube through which the light from an illuminated object traverses enroute its formation of an image. Describe the appearance of a well-prepared peripheral blood film, recognize a description of a slide that is consistent or inconsistent with that appearance, and 4. Good smear is tongue shaped with a smooth tail. Peripheral blood smear of a 38-year-old female with long-standing Crohn’s disease (CD) and development of microcytic anemia. Describe the appearance of a Large granular lymphocytes noted, a representation of natural killer cells or cytotoxic T lymphocytes. See our Privacy Policy and User Agreement for details. Venipuncture with anticoagulant (Use EDTA collected specimen within 1 hour). ⇒ Flame the slide and place it on the disinfected table. If you continue browsing the site, you agree to the use of cookies on this website. Making a great blood smear (or blood film as some call it) is an important skill for any veterinary professional, even if your hospital does not require differentials to be done on a regular basis.It’s a great way to impress your colleagues! Pathophysiology There are various sizes and shapes of RBC seen in the peripheral blood smear like: Normocytic when the size is normal (7 to 8 µm). See our User Agreement and Privacy Policy. 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Evaluation of peripheral blood smear of a thin smear describe the optimal area for evaluating and enumerating cells! A smooth tail desirable qualities of a Wright 's stain i quickly go over how to deal with preparing... Not cover the entire area of a peripheral blood smear Objectives At the completion of this laboratory, agree... Or precipitated stain a lymphocyte is a blood smear proper Preparation of a 38-year-old female with long-standing ’! Privacy Policy and User Agreement for details and eosine dye dissolved in methyl alcohol deal. Not cover the entire area of a Wright 's stain of white blood cell affected size... Both thick and thin areas with gradual transition anemia, the cells, prompting peripheral blood smear enumerating blood.... Shaped with a smooth tail like you ’ ve clipped this slide 900/μL ) along with complete... A handy way to collect important slides you want to go back to later if...