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Test Code:
NAU

Order Name:
Sodium (Random Urine)

 
Useful For:
Assessing acid-base balance, water balance, water intoxication, and dehydration
 
Methodology:
Ion-selective electrode diluted (Indirect)
 
AliasesName:
Na+ (Sodium), Random urine
 
 
 
Test Code:
NAU

Order Name:
Sodium (Random Urine)

 
Collection Specimen Or Container:
Urine, Clean container 
 
Specimen Testing Type:
Urine, minimum volume 10 mL
 
Sub Mission Container:
Clean container
 
Specimen Stabillity:
Specimen Type Temperature Time
Random urine Refrigerated, 2oC to 8oC 45 days
Frozen, -20oC 12 months
 
 
 
Test Code:
NAU

Order Name:
Sodium (Random Urine)

 
Method detail:
Ion-selective electrode diluted (Indirect)
 
Schedule:
Tested daily (24 hours)
 
Turnaround Time:
Collected specimen to report within 1.5 hours (90 mins)
 
Performing Location:
Chemistry, Laboratory Department Tel. 13224
 
Specimen Retention Time:
7 days
 
 
 
Test Code:
NAU

Order Name:
Sodium (Random Urine)

 
 
Clinical Information:
Sodium is the major cation of extracellular fluid; it plays an essential role in the normal distribution of water and in the maintenance of osmotic pressure in extracellular fluid compartments. Decreased levels of sodium may be caused by an excessive use of diuretics, prolonged vomiting, a decrease in the intake of sodium in the diet,
and metabolic acidosis. Increased levels of sodium may be found in Cushing’s syndrome, severe dehydration, or in high levels of salt intake without an adequate supply of water.
 
Interpretation:
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.
 
Clinical Reference:
  1. Manufacturer’s reagent package insert, Architect® ICT (Na+, K+, Cl-) Sample Diluent, Abbott Laboratories, Diagnostic Division, Abbott Park IL 60064 , May 2016.
  2. http://www.mayomedicallaboratories.com (Retrieved: 01 Jan 2019)