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Laboratory Medicine

Test catalogue

Electrolytes, Urine 24Hrs ( 24Hrs Urine Lytes)

Test name

Electrolytes, Urine 24Hrs ( 24Hrs Urine Lytes)

Plain 24 bottle Specimen Type / Requirements

Container Type = 24 hour plain container bottle

Minimum Volume = 5 mL urine from mixed urine Collection

Specimen Handling

Collection Instructions: 24h urine collected in plain container without preservative. Ensure collection bottle is labelled correctly. Keep the collected urine refrigerated if possible and return to lab ASAP.

Write your "start" and "end" date and time of collection on the collection label or requisition.

Stability: Urine lytes 24h collection without preservative is stable for 24 h at room temperature, 2 weeks refrigerated and frozen at -15 to -200C for 3 months.

Transportation: Send sample to SMH core lab as soon as possible.

Laboratory Staff Instructions: 5 mL urine from mixed 24 h urine collection. Includes creatinine measurement for calculation of ACR.

Sample Rejection Criteria: Urine collected with acid / alkaline or leaking specimen will be rejected

Required Documentation

Turnaround Time (TAT)

2 Days Except Weekends


Test Utilization

Reference Value

Sodium: 40-220 mmol/d

Potassium : 25-100 mmol/d

Chloride: 110 - 250 mmol/d

Test Code



Indirect ISE

Testing Location


Other Information

Last Updated: June 06, 2019