Magnesium, Timed Urine

Sunquest Code:UMGT  
Epic Code:LAB3842Epic Name:Magnesium Timed Urine
Order Instructions:Order UCRT in addition to UMGT. Enter collection volume and duration.
Methodology:Bichromatic end point
Test Includes:Urine magnesium and creatinine.
Turnaround Time:Performed and reported 24 hours/day.
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Urine Collection Procedure

Collection Instructions

Specimen:Urine, timed collection (20-28 hours)
Optimal Volume:Submit entire collection; analysis requires 1 mL
Container:3 L plastic jug

Processing and Shipping

Specimen Processing:Mix collection well before aliquot is taken. Aliquot 5 mL, 1 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:Urine containing bladder fluid is acceptable. Enter coded comment IRRFL (urine contains bladder irrigation fluid).
Test Performed at or Referral Lab Chemistry  (UMMC-West Bank, UMMC-East Bank)


Reference Range:73-122 mg/24 hours
Use:As an index of repletion of magnesium deficiency in hypomagnesemia; to rule out renal magnesium wasting.

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