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Evaluation of electrolyte balance, hyperosmolar status and hydration status
No established reference range for fluid osmolality samples.
Collect specimen in clean container with no preservative (SST or red top tube Vacutainer® tubes are also acceptable). Body fluid must be of liquid consistency for analysis. Watery stool sample acceptable.
Collect body fluid in clean container with no preservative (SST or red top tube, Vacutainer® tubes are also acceptable). Refrigerate. Body fluid must be of liquid consistency for analysis. Watery stool sample acceptable.