Question | Answer |
what are the components of the cellular portion of the blood? | Erythrocyte 5 million leukocytes 5000 from both sites 140,000 to 400,000 in each cubic |
what are the components of the fluid portion of the blood? | Water 91.5% |
how would blood settle in an anticoagulated tube from top to bottom? | plasma, buffy coat, erythrocytes |
what is the difference between serum and plasma? | Serum is plasma with fibrinogen and clotting factors removed |
what anti-coagulant is in a lavender to? And what is it used for? | EDTA, heem studies |
what anti-coagulant is in a gold tube and what is it primarily used for? | None, yields serum, chemistry |
what anti-coagulant is in a blue top to and what is it primarily used for? | Sodium citrate, PT, PTT coagulation studies |
what two samples are unacceptable for hematology study? | hemolyzed and clotted |
what is leukocytosis? | WBC count above normal |
what causes leukocytosis? | bone marrow stimulated by bacteria or foreign particles example pollen, moldor acute bacterial infections such as pneumonia appendicitis |
what is leukopenia? | WBC count below normal |
what causes leukopenia? | Viral infections, influenza certain chemicals |
what are the normal values for an adult WBC? | 4000 to 11000 WPC per millimeter cubed |
what is an example of a critical WBC count value? | Less than 2000 or more than 50,000 |
how is the operation of automated cell counters classified? | Moderately complex by CLIA |
what tests make upa complete routine CBC? | red blood cell count; WBC; hemoglobin; hematocrit; differential WBC count; estimation of platelet number; red cell indices |
explain red blood cell count | number of red blood cells |
explain white blood cell count | number of white blood cells |
explain hemoglobin | the protein inside the RBC that carries oxygen |
explain hematocrit | percent packed red cell volume |
explain differentialWBC count | % of each type of WBC |
explain estimation of platelet number | platelets observed for approximate number and any abnormalities |
explain red cell indices | info to determine RBC disorders |