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Test Code U24 Ca Urine 24 Hour, Calcium Level

Patient Preparation

No special patient preparation required

Special Collection Instructions

Specimen must be received with the following information included:

  • Total volume of collection
  • Start date and time
  • Stop date and time

Collection Method

24 hour urine collection

Minimum Volume

  • Adults: 0.5 ml
  • Pediatric: 0.3 ml

Container

24 hour urine container

Acceptable Specimens

24 hour urine container

Reference or Target Ranges

100 – 300 mg/24 hour period

Reportable Units

mg/24 hour period

Critical Value

Not defined for this assay

Reasons for Rejection

 


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Hemolysis Threshold 1000 mg/dL
Icterus Threshold 30 mg/dL
Lipemia Threshold 500 mg/dL
Other QNS, contaminated, improperly Labeled, improper specimen type, collection information not provided

Specimen Stability

 


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Ambient 2 days
Refrigerated (4°C to 8°C) 4 days
Frozen(-40°C to 0°C) 3 weeks

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
Methodology/Method Description Siemens Atellica – Colorimetric Assay

CPT Codes

81050;82340