Trial A measurements were significantly lower than trial B measurements (F1,80 = 5.769, P = .0186). The sensitivity of the hydrometer and reagent strips was calculated as the number that were both disease positive and test positive, divided by the number that were disease positive, times 100.24 The specificity of a test indicates how well a test excludes disease negatives (ie, those without the condition, such as dehydration). Instant results - Readings are done "on the spot;" no need to wait for lab results. What are the advantages of using a refractometer compared to a urinometer? In conclusion, our results suggest that the refractometer is a reliable measure of urine specific gravity. Refractometer measurements are commonly made using the Pulfrich or ABBE refractometer design. Posted on May 31, 2022 by May 31, 2022 by Search. In one tertiary care facility, nurses used the refractometer to test urine specific gravity and the reagent strip to test for other substances. This study was designed to provide data to determine if the reagent strip and the refractometer were interchangeable for measuring urine specific gravity in pediatric clients. Reliability of refractometry, hydrometry, and reagent strips was assessed between trials and among testers. First, it is a non-invasive and cheap method that can be performed in large populations in everyday-life conditions. It is more of a qualitative test than a quantitative one. This quick test can help determine how well your kidneys are diluting your urine. Comparison of hydrometry, refractometry, osmometry, and Ames N-Multistix SG in estimation of urinary concentration. Byproducts of both normal and abnormal metabolisms, Abnormal levels of a particular substance in the blood. Average hydration status indicated variability among some of the instruments: digital refractometer USG=1.01940.0075, 2 What are the advantages of refractometry? What to keep in mind when performing urinalysis? The N-MULTISTIX 10 SG Reagent Strips (Miles Laboratories, Inc, Elkhart, IN) have a specific-gravity scale ranging from 1.000 to 1.030, with color blocks in intervals of 0.005 units. Epub 2021 Mar 1. What is specific gravity refractometer urine? Finally, the recent National Athletic Trainers' Association position statement on fluid replacement for athletes stated that urine specific gravity measured by a refractometer should be used to determine the hydration status of athletes.10. Testing was done before the start of the wrestling season, and subjects had not exercised within 24 hours of testing. large volume needed correct for temp. Urinometer Refractometers are especially useful for determining urine specific gravity on veterinary samples because they require relatively small sample volumes. Start urinating in the toilet and pass the collection container in the urine stream. Although urine specific gravity is not regarded as the gold standard, current literature suggests a clinical refractometer is a valid, reliable, and practical method for official website and that any information you provide is encrypted Refraction of light offers advantages for the determination of solute concentrations because the measurement requires no chemical alteration of the specimen. Read the scale value at the point where the dark and light portions meet. Popowski LA, Oppliger RA, Patrick Lambert G, Johnson RF, Kim Johnson A, Gisolfi CV. it needs to be corrected for temperature. Unable to load your collection due to an error, Unable to load your delegates due to an error. National Collegiate Athletic Association Wrestling Rules Committee. Refractometers can also measure chemical concentrations, validate mixtures and determine the purity of materials. 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. Urine Intraclass correlation coefficients were calculated between methods and trials. Finally, analysis of the data in Table Table11 and Figure Figure55 reveals that reagent-strip measurements were not consistent between trials for the testers or among testers. 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. McCrossin and Roy12 described the overall correlation between refractometry and hydrometry as good. In studies comparing refractometry with reagent strips, several researchers have suggested that reagent strips are an acceptable alternative to refractometry,1315 whereas others have concluded that they are not.12,1619 Although these findings are contradictory, the interclass Pearson correlation coefficients reported in these previous validity studies might not be the most appropriate statistical approach to use when comparing 2 methods of measurement.20,21 Furthermore, none of these authors assessed the reliability of refractometry, hydrometry, or reagent strips.
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