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Heamatology
| Term | Definition |
|---|---|
| Morphology | Study of former and structure of cells and tissue |
| Smear | A blood film produced by dragging a drop of blood across a glass slide |
| Fixative | A chemical that prevents cells from deterioration |
| Methanol | An alcohol fixative used for blood films |
| Anhydrous | Without water |
| Humidity | The degree of moisture in the air |
| Romanowsky | A group of stains that contain esosin and methylene blue |
| Eosin | A dye that produces a red colour in cells |
| Methylene blue | A dye that produces a blue colour in cells |
| Polychromatic | Multicoloured |
| Supra vital stain | A stain that colours living cells or tissue |
| ESR | Erythrocyte sedimentation rate- the rate at which RBC's settle out from whole blood |
| Wintrobe tube | A thick-walled tube marked 0-100 used for wintrobe ESRs |
| Sickle cell disease | An inherited haemolytic anemia caused by Hbs |
| Malaria | A haemolytic disease cause by a parasite infection |
| Spherocytosis | Increased in spherical red blood cells |
| Macrocyte | A larger than normal cell, usually referring to RBC |
| Hypochromic | Decrease in cell colour, usually refers to RBC |
| Nucleated RBC | Immature RBC which still contains it's nucleus |
| Haematocrit (Hct) | Volume of packed RBC's, as a percentage of whole blood |
| Maturation | Development |
| Poikilocytosis | Variation in shape of RBC's |
| Anisocytosis | Variation in size of RBC's |
| Diff | Differential count in WBC's |
| Bone marrow | Soft organic material that fills the cavities of the bone. Site of blood cell formation |
| Microcyte | A smaller than normal cell, usually refers to RBC |
| Rouleaux | Blood cells in "stacks of coins" formation |
| Polycythemia | An increase in the packed cell volume |
| CBC | Complete blood count. Incorporates all rbc, wbc, and platelet measurements. 20 tests |
| Haemoglobin | Hb test. Measures O2 carrying capacity of blood |
| WBC count | Number of WBC per ml of blood |
| RBC count | Number of RBC per ml of whole blood |
| Red cell indices | MCV-size of average cell MCH-average hb content per cell MCHC-ratio of size to hb concentration RDW- red cell distribution width- spread of size of the red cell population AID IN DIAGNOSING TYPE OF RED CELL PATHOGENESIS |
| Diff | Percentage and values of the different types of white cells |
| Platelet count | Number of platelets per ml of whole blood |
| Reticulocyte count | Measure of bone marrow response to anaemia |
| ESR | Rate of settling RBC |
| Sickle cell preparation | Test for presence of an abnormal hb |
Created by:
Laurenpinky1997
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