In point-of-care testing, the purpose of EQC is to:
a. monitor whether the blood sample has been hemolyzed.
b. calibrate the blood glucose standards.
c. test the instrument's internal and analyte circuits.
d. determine if the blood specimen has hemoglobin too high for testing in the POC
instrument.
C
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A small focal spot should be used for each of the following situations, except when
a. fine detail demonstration is important. b. extremities are imaged. c. the milliamperage setting is above 300. d. the patient can control motion.
As hygroscopic aerosol particles enter the respiratory tract, what do they tend to do?
a. Decrease in size because of the absorption of molecular water. b. Increase in size because of the absorption of molecular water. c. Increase in size because of the evaporation of molecular water. d. Decrease in size because of the evapora-tion of molecular water.