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HelpTest Code URCR Urine Creatinine, 24 hour
Specimen Type
Urine
Container/Tube
Sterile Urine Container
Offsite Collection Instructions
1. Follow clinic instructions for 24 hour collection
process.
2. Keep urine refrigerated during the 24 hour collection
process.
3. Aliquot 10 mL from a well mixed timed sample collection.
4. Indicate collection volume and duration.
5. Transport refrigerated (2-8 ° C).
Turnaround Time
4 hours
Test Includes
Quantitative determination of creatinine in urine
Preferred Volume
0.5 mL
Specimen Minimum Volume
0.2 mL
Reject Due To
N/A
DAY(S) AND TIME(S) PERFORMED
24 hours, 7 days a week including holidays.
STAT DAY(S) AND TIME(S) PERFORMED
N/A
STAT Turnaround Time
N/A
Method Name
Kinetic Colorimetric Assay based on the Jaffé Method.
Synonyms
N/A
CPT
82570
Fee Code
30182570
Test Limitations
The presence of ketone bodies can cause artificially high
results in urine. High homogentisic acid concentrations in
urine
samples lead to false results.
If preservatives need to be used for other analyte orders,
collect sample using Hydrochloric Acid (6N HCl) or Boric Acid
(5
g/L).
Test Usage
The assay of creatinine in urine helps with the diagnosis
and
treatment of renal disease and renal dialysis.
UCMC Collection Instructions
1. Follow clinic instructions for 24 hour collection
process.
2. Keep urine refrigerated during the 24 hour collection
process.
3. Aliquot 10 mL from a well mixed timed sample collection.
4. Indicate collection volume and duration.
5. Transport refrigerated (2-8 ° C).
Reference Values
1000 – 2000 mg/24 hr
Additional Information
N/A
Stability: Room Temp
3 days
Stability: Refrigerated
8 days
Stability: Frozen
3 weeks