Fill Heparinized Capillary Question & Answer Guide (With Explanation)

This type of question evaluates analytical and critical thinking skills.

What This Question Is About

This question relates to fill heparinized capillary and requires a structured academic response.

How to Approach This Question

Use appropriate theories and support your answer with clear reasoning.

Key Explanation

This topic involves fill heparinized capillary. A strong answer should include explanation, application, and examples.

Original Question

(a) Fill a heparinized capillary tube with blood (b) Seal the end of the tube with clay (c) Place tube into groove of microcentrifuge Figure 19-4 Steps in preparing a blood sample for hematocrit determination. instructor will show you how to use the reader in your c. What might cause a low hematocrit value? lab. If a reader is not available, then you can still calcu- late the hematocrit for your blood sample by complet- ing the following steps. d. What might cause a high hematocrit value? a. Use a millimeter ruler to measure the length of the whole column of blood in the tube (including eryth- 19 rocytes, buffy coat, and plasma). Length of whole column = Activity 3 Performing a Differential White b. Measure the length of the packed erythrocytes in millimeters. Blood Cell Count Length of packed erythrocytes = Learning Outcomes 1. Perform a differential white blood cell count. c. Use the following formula to calculate the percent- tween normal and abnormal results for a age of erythrocytes in whole blood (hematocrit): 2. Differentiate between differential white blood cell count. 3. Describe the significance of elevated and depressed Hematocrit Length of erythrocytes (in mm) white blood cell counts. Length of whole column (in mm) X 100% = Materials Needed 8. Dispose of your capillary tube in the sharps biohazard O Prepared slide of normal blood O Prepared slide of abnormal blood disposal container and clean your workspace with 10% bleach solution. Compound microscope 9. Remove your gloves and put them in the biohazard Instructions waste container. Wash your hands thoroughly with soap A differential white blood cell count is performed to deter- and water. mine the percentages of each white blood cell type in a 10. Work with your lab group to answer the following blood sample. In a clinical laboratory, this procedure can question set. be done rapidly with computers. In this Lab Activity, you will perform a differential white blood cell count manually a. What is the normal hematocrit value for a healthy using prepared microscope slides and a microscope. Com- adult male? plete the following steps. b. What is the normal hematocrit value for a healthy 1. Position your slide of a normal human blood smear in adult female? the microscope’s field of view so that you are viewing the blood smear near the lower left corner of the slide. 426 UNIT 19 | Blood

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