The site is secure. WebRefractometers are designed for specific operations, such as measuring liquids such as oils, or water-based liquids, gases, and transparent or translucent solids, such as gemstones. Any abnormalities can be linked to a particular disease or illness. Bookshelf Pediatr Nephrol. Advantages of Reractometer. During preparticipation physical examinations, athletic trainers identified collegiate football players and monitored hydration status (n = 69 samples) during preseason practices. Therefore, our purposes were to assess the reliability of refractometry, hydrometry, and reagent-strip measurements across multiple trials and testers and to investigate the validity of hydrometer and reagent-strip measurements compared with refractometry using a variety of statistical approaches. PMC (1, 2, and 3). Refractometer. Refractometers are fast, simple, no need to bring down to calibrated temps. Guthrie et al15 collected urine samples from 279 hospital outpatients and found r = .88 between reagent strips and refractometry when no correction was made for the presence of glucose in the urine and r = .92 when a correction was made for glucose. Specific gravity = Density of urine / Density of water. The strength of the intraclass correlation coefficients was assessed according to the rating scale of Vincent.23 We prepared Bland-Altman plots21 to evaluate agreement between measurement methods for urine specific gravity. Still cheaper than a refractometer. WebRefractometers are especially useful for determining urine specific gravity on veterinary samples because they require relatively small sample volumes. Popowski LA, Oppliger RA, Patrick Lambert G, Johnson RF, Kim Johnson A, Gisolfi CV. It has been suggested that, when multiple tests are given for the same variable, intraclass correlation coefficients should be used.20 Furthermore, Bland and Altman21 have proposed that the best statistical approach when comparing measurement devices is the Bland-Altman plot. Image 3: The image shows the proper way of collecting a urine sample. With no water in the tank, and no weights on the scale, the arm is horizontal.
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