Term
| What are the units of RBC count? |
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Definition
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Term
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Definition
| percent volume of pack erythrocytes to whole blood sample |
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Term
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Definition
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Term
| What is a estimated mathematical relationship between RBC, HGB, and HCT? |
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Definition
RRBC x 3= HGB
HGB x 3 = HCT |
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Term
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Definition
| relationship between individual red blood cells and the hemoglobin concentration |
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Term
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Definition
| red blood cell population as a whole and the hemoglobin concentration |
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Term
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Definition
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Term
| What cause macrocytic anemias? |
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Definition
| megaloblastic anemia, polychromasia, or reticuocytosis |
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Term
| MCV is decreased in what type of anemia? |
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Definition
| microcytic hypochromic anemia |
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Term
| How do you calculate MCH? |
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Definition
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Term
| How do you calculate MCHC? |
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Definition
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Term
| An increase in MCHC is seen only in what two disorders? |
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Definition
| spherocytosis and cold agglutinin |
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Term
| What is the first value to become abnormal in blood loss? |
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Definition
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Term
| RDW can be used to diagnose what genetic RBC disorder? |
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Definition
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Term
| What do you call a population of red blood cells that vary from each other in size and shape? |
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Definition
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Term
| Why are platelets difficult to count? |
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Definition
| they are small, must be differentiated from debris, have a tendency to adhere to glass/foreign body or each other causing a false low count to be obtained |
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Term
| What are the two types of causes of thrombocytosis? |
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Definition
| reactive (e.g. d/t blood loss) or primary (e.g. myeloproliferative neoplasm such as essential thrombocythemia) |
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Term
| What can cause decreased production of platlets? |
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Definition
| decreased number of megakaryocytes d/t marrow replacement by a metastatic tumor or leukemia or ineffective production as in megaloblastic anemia |
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Term
| What can cause increased destruction of platelets leading to thrombocytopenia? |
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Definition
| immune thrombocytopenia or disseminated intravascular coagulation |
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Term
| What lab value varies inversely with the platelet count? |
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Definition
| the average volume or size of the platelets |
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Term
| What is the corrected WBC? |
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Definition
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Term
| What age group has NRBCs? |
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Definition
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Term
| Does the manual cell count provide the relative or absolute differential WBC count? |
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Definition
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