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Test Code U Mg Urine, Magnesium Level

Aliases

Random urine magnesium

Patient Preparation

No special patient preparation required

Collection Method

Sterile urine collection

Minimum Volume

  • Adults: 0.5 ml
  • Pediatric: 0.3 ml

Container

Sterile Urine Cup

Preferred Specimen

Sterile Urine Cup

Acceptable Specimens

Urine

Reference or Target Ranges

No reference values for random urine given

Reportable Units

mg/dL

Critical Value

Not defined for this assay

Reasons for Rejection



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Hemolysis Threshold
 800 mg/dL
Icterus Threshold
 60 mg/dL
Lipemia Threshold
 2000 mg/dL
Other
 QNS, contaminated, improperly Labeled, improper specimen type

Specimen Stability



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Ambient
 3 days
Refrigerated (4°C to 8°C)
 3 days
Frozen(-40°C to 0°C)
 1 year

Performance Information



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Days and Time Performed
 24/7
Expected Turn Around Time
 Stat: 1 hour
Routine: 4 hours
Stat Availabilty
 Yes
Performing Bench
 UH Chemistry, WCH Chemistry
Methodology/Method Description
 Roche Cobas – Colorimetric endpoint method

CPT Codes

83735