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Test Code URCR Urine Creatinine, 24 hour

Important Note

If ordering a random collection use order code RCRE

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