Question | Answer |
Hemostasis | Bleeding stops |
Differential Count | Count of 100 WBCs on a stained smear for the purpose of determining the approximate percentage of each type of WBC |
Complete Blood Count (CBC) | Group of blood tests that include hemoglobin, hematocrit, RBC and WBC counts, differential count, platelet count or estimate and RBC indicies |
Erythrocyte Sedimentation Rate (ESR) | Measurement of how far red cells fall in a given amount of blood in 1 hour |
Thrombocyte | Platelets; necessary for coagulation/clotting |
Normocyte | Normal sized cell |
Monocyte | Largest WBC, has no granules in cytoplasm, irregular shaped nucleus, may contain holes in cytoplasm because it is active in phagocytosis |
Macrocyte | Larger than normal sized RBC |
Microcyte | Smaller than normal sized RBC |
Leukocyte | AKA WBC; main function is immunity to fight infection |
Lymphocyte | Smallest WBC; contains no granules in cytoplasm; elevated in viral infections |
Serum | Liquid portion of blood after clotting takes place; contains no coagulation factors |
Hematocrit | Percentage of packed RBCs in total volume of blood |
Hemoglobin | Iron pigment on RBC that carries oxygen |
Mean Corpuscular Value (MCV) | A measure of the average volume of a red blood corpuscle (or RBC). |
Mean Corpuscular Hemoglobin (MCH) | The average mass of hemoglobin per red blood cell in a sample of blood |
Mean Corpuscula Hemoglobin Concentration (MCHC) | A measure of the concentration of hemoglobin in a given volume of packed red blood cells |
Prothrombin Time (PT) | A test used to help diagnose bleeding or clotting disorders |
International Normalized Ratio (INR) | A calculation based on results of a PT and is used to monitor individuals who are being treated with the blood-thinning medication (anticoagulant) |
What is one function of hemoglobin? | Carry oxygen to cells throughout the body |
What test is used as an indicator for the presence of inflammation? | ESR |
What material are capillary tubes being switched to and why? | Plastic or mylar coated to reduce the risk of injuries due to broken tubes |
Would a COPD Pt have an increase or decreased hemoglobin level? | Increased as a result of the body compensating for the lack of oxygen supply in Pts with lung disease |
What anticoagulant is a heparinized capillary tube coated with? | Heparin |
A microhematocrit tube fills by… | Capillary action |
What is the most common method for prepping a blood smear? | Slide or wedge method |
What are the two most common stains used in blood smears? | Wright and Giemsa |
What objective on a microscope is used to perform the differential count? | Oil immersion objective |
What does a U-shaped nucleus in a neutrophil indicate about a cell? | It is a band or stab |
White Blood Cell Counts (normal values): | Adults -- 4,500 to 11,000/cu mm; Neonates -- 9,000 to 25,000/cu mm |
Hemoglobin (normal values): | Males -- 13-18 g/dL; Females -- 12-16 g/dL; Neonates -- 15-20 g/dL |
Hematocrit (normal values): | Males -- 42-52%; Females -- 36-45%; Neonates -- 44-64% |