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Hematology
| Question | Answer |
|---|---|
| Reticulocyte counts are not part of | the CBC |
| What do I use to check the setting on hematology instruments | controls |
| major part of red blood cells | hemoglobin |
| What is erythropoiesis | production of red blood cells |
| What anticoagulant do you use for hematology analyzers | EDTA |
| What is hemolytic anemia | breakdown of red blood cells |
| What is the most common type of abnormal hemoglobin | hemoglobin S |
| What method is used for hematology analyzers | flow cytometry |
| Abnormal amounts of fat in blood | lipemia |
| What is the MCV | average volume of RBC's |
| How is a hematocrit reported | measures the percent volume of the red blood cells in a volume of whole blood |
| What is hematology | study of blood and blood forming tissues |
| What is elevated in polycythemia | hematocrit |
| What is the average hematocrit percentage in an adult male | 42-52% |
| when should we use good quality control | ALWAYS |
| What are three levels of controls | abnormal low, normal, and abnormal high |
| What carries hemoglobin molecules | Red blood cells |
| Three causes of anemia are: | excessive bleeding, erythropoiesis, and malnutrition |
| When Spinning blood how is it separated (layers) | red blood cells, Buffy coat, plasma |
| What is normal hemoglobin level for adult males | 14-18 |
| What is the normal adult RBC | 4-6 million RBC |
| How often are controls run when a lab has extended hours | every 8 hours |
| When are red blood cells seen on a white blood cell count | when they are immature and still nucleated |
| What is the main function of WBC's | immunity |
| Why do we use split specimen testing | check accuracy |
| What specimen do you use for manual WBC or RBC counts | whole blood |
| What instrument is used to perform a manual WBC count | hemacytometer |
| What is the one hematology test that is not measured by an analyzer | sedimentation rate |
| What's the normal WBC for an adult | 4500-12000 |
| What is the white blood cell layer on the top of packed RBC's called | Buffy coat |
| What are the RBC's called that are released from bone marrow | reticulocytes |
| What is the main function of the red blood cells | carry oxygen |
| When is the WBC count at it's lowest daily | first thing in the morning |
| What are erythrocyte indices used for | three indicators to diagnose anemia |
| What is the word that means lacking oxygen | anoxia |
| What is most commonly seen on a differential slide | red blood cells |
| What is the most common type of WBC | Neutrophil |
| What do granulocytes consist of | monocytes and lymphocytes |
| What is the least important RBC indice | MHV |
| another name for thrombocyte | platelet |
| What additive is used in blood samples used for blood smears | EDTA |
| How are sed rates set up? | in a long tube straight up left to settle |
| What WBC's are used to calculate RBC indices | None |
| How many drops of blood are needed for a smear | one small drop |
| If the angle of the slider is to great what happens | smear is going to be to thick |
| MCV represents what | column of packed RBC |
| What is the most common used stain | Wright's stain |
| When do you read an ESR | one hour after setup |
| How many WBC's are counted on a blood smear | 100 |
| What features are examined on a differential | cell, nucleus, cytoplasmic |
| What is an immature neutrophil | A Band |
| What is a single nuclear cytoplasmic granules | lymphocyte |
| Blood smear should cover how much of a slide | two thirds |
| When do Eosinophils increase it indicates | allergies |
| A patient with Mono will have increased | lymphocytes |
| What stain is used when staining reticulocytes | supra vital stain |
| What is the shape of a CBC | biconcave |
| What power is used to view RBC on the microscope | oil emersion |
| What are we looking for on a blood smear | cells, shape, size, color of nucleus, cytoplasm |
| What is the least type of WBC in the blood stream | Basophils |
| What is the life span of RBC's | 120 days |
| What forms antibodies | lymphocytes |
| A smear must be set up within _________ after drawing blood | two hours |
| The opening in the probe of an electrical impedance or electron optical cell counter: | aperture |
| an automated hematology instrument that analyzes formed elements based on their impedance of an electrical current: | electrical impedance cell counter |
| the method of studying the formed elements in blood that depends on their resistance to the flow of an electrical current is the: | electrical impedance method |
| this technique analyzes cells as they are forced through a detector system (electrical, light, laser, or fluorescent dyes) | flow cytometry |
| artificial blood containing both human and animal cells for checking settings: | hematology controls |
| a graph derived from sampling showing frequency distributions is: | histogram |
| optical counting method is also know as: | lights scattering method |
Created by:
CWillems
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