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Urea Nitrogen, Urine 24 hour
Test Code: U24UN Assay Schedule: Daily Reporting Schedule: Same day CPT: 84540 ; 81050 if TriCore aliquots Collection Specimen(s): Urine, 24-hour or Urine, 24-hour aliquot Acceptable Container(s): 24-hour Urine container Volume: Preferred: 5.0mL Minimum: 1.0mL Stability: Ambient: Unacceptable Refrigerated: 5 days Frozen: 6 months Processing & Shipping Specimen Processing: CRITICAL: Refrigerate urine during and after collection. Collect in a 24-hour urine container and mix well. Aliquot urine into transport tubes and refrigerate. Shipping Instructions: Ship refrigerated Special Instructions: Mesure and record total volume and collection intervals on the tube and requisition. A Creatinine, Urine 24 hour (U24CR) will be performed with this test. Rejection Criteria: Specimens shipped ambient are unacceptable.

Urea Nitrogen, Urine 24 hour

Test Code:  U24UN
Assay Schedule:  Daily
Reporting Schedule:  Same day
CPT:  84540 ; 81050 if TriCore aliquots

Collection

Specimen(s):

Urine, 24-hour or Urine, 24-hour aliquot

Acceptable Container(s):

24-hour Urine container

Volume:

Preferred: 5.0mL
Minimum: 1.0mL

Stability:

Ambient: Unacceptable
Refrigerated: 5 days
Frozen: 6 months

Processing & Shipping

Specimen Processing:
CRITICAL: Refrigerate urine during and after collection. Collect in a 24-hour urine container and mix well. Aliquot urine into transport tubes and refrigerate.

Shipping Instructions:
Ship refrigerated

Special Instructions:
Mesure and record total volume and collection intervals on the tube and requisition. A Creatinine, Urine 24 hour (U24CR) will be performed with this test.

Rejection Criteria:
Specimens shipped ambient are unacceptable.

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