Test directory: Sodium, 24 Hr Urine

Ordering Code5211
Test NameSodium, 24 Hr Urine
Alias24 Hr Urine Sodium
24 Hr Urine Na+
Preferred SpecimenUrine, 24 Hour
Preferred Container24 Hour Urine Container
Optimum Volume0.5 mL
Collection InstructionsKeep refrigerated during collection. Do not include first morning specimen; collect all subsequent voidings. The last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning's first voiding. Do NOT add preservatives. Record entire 24 Hr volume and collection time on container & requisition.
Handling InstructionsSend a well-mixed, 50 mL centrifuged aliquot of specimen.
Transport RequirementsOahu: Refrigerated
Airline: Refrigerated
Specimen StabilityRefrigerated: 7 Days
Rejection CriteriaInsufficient quantity, Contaminated, Preservatives used,
Specimen older than stability limits, Received ambient
Avail. StatNO
Analytic Time1 Day
MethodologyIon Selective Electrode (ISE)

Reference range(s)

The reference ranges listed below are valid on this date of April 19, 2024.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
24-Hr Urine SodiumALL40-22040-220mEq/24hr
Sodium, UrineALLmEq/LSee report.
Total VolumeALLmLSee report.
Total TimeALLminutesSee report.