The fibrometer relies on the principle of conduction or impedance of an electrical current by fibrin In the photo-optical method, the change in light transmission vs the time _____ is used to determine the activity of coagulation factors/ stages. In measuring platelet aggregation, platelet-rich plasma can be D treated with _____ to aggregate platelets. A. saline B. collagen C. epinephrine D. both B and C A source of error when using the fibrometer in coagulation studies D can be A. improper reaction temperature B. overincubation of the substrate reagent C. overincubation of the test plasmas D. all of the above Match the following principles of cell counting instrumentation 262. The output 262) As each cell passes through the sensing zone of the flow cell, it histogram is a scatters the focused light. display of the 263) The output histogram is a display of the distribution of cell volume distribution of cell and frequency. volume and frequency 263. Optical detection principle Match the characteristics of light scatter 264. Low-angle 264) Diffracted light, which relates to the size or volume of the cell light scatter 265) Refraction of internal components, which correlates with internal 265. Orthogonal complexity light scatter True or False? Laser light is almost exclusively of one wavelength. True True or False? Laser light is multicolored. False True or False? Laser has parallel waves that travel in one direction. True With a particle-counting instrument, a high background count can contaminated be due to diluent The term parameter means A statistical The term, sample, means A subset of a population A statistic is Any numerical value describing a sample The delta check method of quality control Uses the patient’s own data to monitor population values
The fibrometer relies on the principle of conduction or impedance of an electrical current by fibrin In the photo-optical method, the change in light transmission vs the _____ is used to determine the activity of coagulation factors/ stages. time In measuring platelet aggregation, platelet-rich plasma can be treated with _____ to aggregate platelets. A. saline B. collagen C. epinephrine D. both B and C D A source of error when using the fibrometer in coagulation studies can be A. improper reaction temperature B. overincubation of the substrate reagent C. overincubation of the test plasmas D. all of the above D Match the following principles of cell counting instrumentation 262) As each cell passes through the sensing zone of the flow cell, it scatters the focused light. 263) The output histogram is a display of the distribution of cell volume and frequency. 262. The output histogram is a display of the distribution of cell volume and frequency 263. Optical detection principle Match the characteristics of light scatter 264) Diffracted light, which relates to the size or volume of the cell 265) Refraction of internal components, which correlates with internal complexity 264. Low-angle light scatter 265. Orthogonal light scatter True or False? Laser light is almost exclusively of one wavelength. True True or False? Laser light is multicolored. False True or False? Laser has parallel waves that travel in one direction. True With a particle-counting instrument, a high background count can be due to contaminated diluent The term parameter means A statistical The term, sample, means A subset of a population A statistic is Any numerical value describing a sample The delta check method of quality control Uses the patient’s own data to monitor population values
Hematology%20TB%20Flashcards%20Unit%204.docx