Category: A

  • Reflectometer

    An instrument that measures the light reflected by a surface. Reflectometers are used to analyze blood and urine specimens.  

  • Diffuse reflection

    The reflection of a light ray by a rough surface in which the angle of reflection is not equal to the angle of incidence. As opposed to specular reflection by a smooth surface in which the angle of reflection equals the angle of incidence. Employed in the analytical technique of reflectometry.  

  • Spectral reflectance

    The reflectance of light from a polished surface in which the angle of reflectance equals the angle of incidence.  

  • Reflectance photometer

    An instrument used to measure reflectance; used clinically in chemical analyzers, glucometers, and dipstick readers.  

  • Diffuse reflectance

    The reflectance of light from a rough or non-polished surface in which the radiant energy tends to scatter. The angle of reflectance does not equal the angle of incidence.  

  • Refine

    To purify or render free from foreign material.  

  • Referral bias

    The difference that arises from the study of those patient populations who receive primary care as opposed to those who receive care at tertiary care centers.  

  • Reference woman

    An idealized female, used in research models, described the same as reference man, except in weight (66 kg) and caloric intake (2000 kcal/day).  

  • Reference pricing

    A method of health care cost control in which the cost of all items in a class of roughly equivalent products or services is reimbursed at a fixed dollar amount. Patients or providers who seek care that is more expensive than the reference price pay additional fees. Those who agree to use standard services are…

  • Reference

    A standard for the evaluation of objects, data, or ideas.