(Specimen Container)
Plastic urine container, no preservative
(Transport Temperature)
| Temperature | Period |
|---|---|
| Room temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 30 days |
10 mL urine aliquot from 24-hour collection – no preservative , Record total volume and collection duration on specimen container and test requisition.
Assessing acid-base balance, water balance, water intoxication, and dehydration. The excretion of sodium varies with dietary intake. There is a diurnal variation of sodium excretion with excretion being greater during daytime than during the night. Decreased levels are seen in congestive heart failure, excessive sweating, diarrhea, pyloric obstruction, malabsorption and primary aldosteronism. Increased levels may be due to increased salt intake, failure of the adrenal glands, diabetic acidosis, salt losing renal disease, diuretic therapy and water deprivation dehydration.
52 – 380 mmol/L/24 hour
