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Urea
Alternative Names/Synonyms
Laboratory
Core Laboratory & Transfusion Medicine
Sub-section
Biochemistry
Specimen Type
Blood
Test Code
UREAS, UREAP
Clinical Significance (If applicable)
Evaluating renal function and assisting in identifying azotemia.
Specimen Requirements (Sample Type)
Serum, Plasma
Specimen Requirements (Volume (mL))
0.5 mL
Specimen Requirements (Tube Type)
Serum (Gold SST)
Plasma (Light Green PST)
Collection Containers – Tube Types
Draw (mL)
4.5 mL
Collection Requirements
Collection Instructions
Sample Stability
Room Temperature
: 7 days
Fridge
: 7 days @ 2-8°C
Freezer
: 1 year @ -20°C
Cause for Rejection
Specimen Acceptability and Transport Guidance
Instrument, Methodology
Roche cobas c 702, enzymatic
Test Availability
24 hours a day, 7 days a week
STAT Turnaround Time
1 hour
Routine Turnaround Time
3 hours
Reference Ranges
3.0 - 7.0 mmol/L
In case of discrepancies, always interpret results using reference ranges as stated on laboratory reports and/or electronic patient chart.
Laboratory Contact Information
416-586-4800 extension 4688
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