Further studies of this and other tools are necessary to identify inexpensive practical tools for quantification of thickened liquid consistency. Thus, the results of the current study suggest that the LST may be useful in the broad categorization of fluids into therapeutically significant groupings but that it cannot be used more specifically to measure fluid viscosity. Our testing services, expert advice and practical consultancy support will help you measure and predict the critical quality attributes of your food. Furthermore, the LST was not predictive of viscosity. Rheology, viscosity, texture and biotribology testing provides a wealth of information to the food and beverage industries for product development, process design and quality control applications. Whereas the LST was able to separate the juices into nectar and honey categories, it was not able to separate barium mixtures into these categories nor compare barium to juices. Twenty-six liquids (10 powder-thickened "nectar" juices, 10 powder-thickened "honey" juices, and 6 barium mixtures) were assessed using both a viscometer for objective measurement of viscosity and the LST. The current study analyzed the utility of the Line Spread Test (LST) in this regard. This lack of standardization leads to variability in practice and points to the need for a simple tool for clinicians to assess thickened liquid consistency. Although dietary modification is a common treatment strategy used to manage dysphagic patients who aspirate thin liquids, there are no standard definitions for thickened liquid preparation.
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