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Evaluate electrolyte composition of urine, electrolyte balance studies
170 - 250 mEq/24 hours (170-250 mMol/24 hours). Random urine collections are reported in units of mmol/L, for which reference values are not established.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect timed 24-hour or a random urine sample. For a 24 hour collection, instruct patient to void at 8:00am (or 8:00pm) and discard the specimen. Then collect all the urine including the final specimen voided at the end of the 24 hour collection period, i.e., 8:00am (or 8:00pm) the following day. Refrigerate during collection. Transport promptly to the laboratory. Container must be labeled with date and time collection started and finished. Outside of specimen container must be clean and free of smeared or leaking specimen.
Collect 24 hour urine specimen with no preservative. Aliquot 5 mL into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Random urine also acceptable.