Test Information:
The kidney is central to the regulation and conservation of electrolytes in the body. Urinary sodium (Na+) excretion varies with dietary intake, and there is a large diurnal variation with the rate of Na+ excretion during the night being only 20% of the peak rate during the day. Urine sodium testing is used on the evaluation of acid-base abnormalities, water balance, water intoxication, and dehydration.
Specimen Container:
Sterile / Plain Urine Container
Specimen Type:
Random Urine
Required Volume:
5 mL
Patient Preparation:
No Patient Preparation
Notes:
N/A (Not Applicable)
Storage & Stability
(Before Processing)
- Storage: 2 to 8°C
Stability: 14 days - Storage: 15 to 25°C
Stability: 14 days - Storage: – 20°C
Stability: 1 month
Transport Temperature:
Ref (2˚C – 8˚C)
Test Category:
Routine
Test Schedule:
Daily
Results Availability:
Within 4 hours