Sodium, Timed Urine

Abbrev Code:UNAT   
Order Code:LAB445Order Name:Sodium Timed Urine
Methodology:Indirect potentiometric
CPT Codes: 84300 x1
Test Includes:Sodium Urine mmol/L; Sodium Urine mmol/spec; Duration in hours; Volume in mL
Turnaround Time:Performed and reported 24 hours/day.
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Urine Collection Procedure

Collection Instructions

Specimen:Urine, timed collection (20 to 28 hours)
Optimal Volume:Submit entire collection; analysis requires 0.2 mL
Container:3 L plastic jug
Alternate Containers: Plastic leakproof container, sterile

Processing and Shipping

Specimen Processing:Mix collection well before aliquot is taken. Aliquot 5 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:Specimens containing red cells or precipitate must be centrifuged. Urine containing bladder fluid is acceptable. Enter coded comment IRRFL (urine contains bladder irrigation fluid). Stability: Room or refrigerated temperature - 1 week; frozen - 1 year.
Test Performed at or Referral Lab Chemistry  (Range, UMMC-East Bank, Lakes, Ridges, Northland, Southdale, UMMC/UMMCH-West Bank, M Health Clinic and Surgery Center, St. Joseph's, St. John's)


Reference Range:40-220 mmol/24 hours; varies with diet.

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