Questions and Answers
Whole blood, anticoagulated with ______, is stained with a supravital stain.
EDTA
The purpose of the White Blood Cell (WBC) Count is to detect hidden ______.
infections
The Erythrocyte Sedimentation Rate (ESR) measures the rate at which red blood cells ______.
sediment
A common hematology test that helps monitor the effectiveness of chemotherapy is the ______ Count.
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The ______ is a nonspecific test used to measure inflammation.
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A supravital stain like new methylene blue or brilliant ______ is used in reticulocyte counts.
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EDTA is used for modified Westergren (ESR) due to its effect on ______.
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The combination used for blood coagulation tests includes 2 ml EDTA blood and 0.5 ml of 3.8% ______.
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The White Blood Cell Count is often included in a ______.
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Monitoring the effectiveness of radiation treatment in cancer patients can be done through a ______ Count.
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One disadvantage of using oxalate is it can cause ______ of WBCs and platelets.
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Mixing 2 ml EDTA blood with 0.5 ml of NSS is done to adjust the ______ of the blood sample.
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Citrate functions primarily by binding ______ to prevent coagulation.
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Using EDTA can change the morphology of ______ due to the preparation of blood samples.
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EDTA is not recommended for ______ tests and platelet counts.
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One of the main disadvantages of using oxalate for blood tests is its impact on peripheral blood ______.
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The concentration of ______ in the blood is measured using HGB determination.
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The purpose of HGB in the blood is to assess ______.
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Included in Sahli's hemoglobinometer set is a hemoglobin ______.
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The percentage of each type of ______ is measured in a differential count.
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Accuracy refers to the closeness of an estimated value to the true ______.
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The type of blood sample collected via venipuncture is ______ blood.
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When an error is detected, corrective ______ are performed to address the system.
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Reproducibility relates to the ______ of a result, indicating its consistency over multiple tests.
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The basic screening test is known as a ______.
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A WBC differential count can indicate potential ______.
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The test that measures the number of red blood cells (RBCs) is called ______.
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To detect hidden infections, a ______ test is conducted.
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A hematocrit test measures the volume of packed RBCs that occupy a given ______ of whole blood.
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The reticulocyte count assesses the ______ activity of the bone marrow.
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The concentration of hemoglobin in the blood is measured through ______ determination.
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One of the most frequently ordered laboratory procedures is the ______ test.
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Oxalate binds ______.
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A light blue top evacuated tube contains ______.
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The recommended concentration of oxalate in blood is ______ mg/ml.
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The anticoagulant buffer concentration for citrate is ______% / 0.109 M Na Citrate.
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The three forms of oxalate used in blood collection are Double Oxalate, Lithium ______, and Sodium Oxalate.
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Heparin is commonly used for ______ testing and immunotyping.
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Double Oxalate is also known as ______ Oxalate.
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A disadvantage of using oxalate is that it can cause ______ or clumping of WBCs and platelets.
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Study Notes
Basic Hematological Methods of Examination
- Basic screening tests include Complete Blood Count (CBC) and White Blood Cell (WBC) differential counts.
- WBC differential count detects abnormalities that may indicate potential health issues.
- Red Blood Cell (RBC) Count determines the number of RBCs and platelets in circulation.
Key Tests in Hematology
- Hematocrit test measures the volume percentage of packed RBCs in whole blood.
- Hemoglobin (HGB) determination assesses the concentration of hemoglobin in the blood, essential for oxygen transport.
- A reticulocyte count evaluates erythropoietic activity in the bone marrow.
Blood Collection and Specimen Quality
- Whole blood is anticoagulated with EDTA for testing.
- Venous blood is typically collected via venipuncture.
- Quality assurance includes preventive activities before testing, assessment during testing, and corrective actions if errors arise.
Test Specifics and Techniques
- Erythrocyte Sedimentation Rate (ESR) measures the rate at which RBCs settle in one hour, serving as a nonspecific indicator of inflammation.
- Comparator systems, hemoglobin pipettes, and stirrers are used during accuracy assessments.
Anticoagulants in Hematology
- EDTA is commonly used for various blood tests but may alter RBC morphology if samples are old.
- Sodium citrate, typically at 3.8% concentration, is preferred for coagulation studies.
- Separate use of ammonium and potassium oxalate can cause RBC swelling and shrinking, respectively.
Special Considerations for Specimen Handling
- Double oxalate is beneficial as it minimizes the effects on RBCs, making it suitable for RBC valuation tests.
- Yellow blood tubes are used primarily for blood cultures.
Conclusion
- Proper understanding of hematological methods, specimen collection, and quality assurance processes is vital in diagnosing and monitoring hematological conditions.
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Description
This quiz covers essential hematological methods, including blood specimen collection, quality assurance, and basic screening tests. It delves into topics like the complete blood count (CBC) and white blood cell (WBC) differential counts. Prepare to test your knowledge on key concepts in hematology.
