Schedule an Appointment Pay Bill View My Results

Test Directory

Test Directory Creatine, 24-Hour Urine

Creatine, 24-Hour Urine

Test Summary

Creatine, produced by the liver, is essential for metabolism of the brain and muscles. Creatine is converted to creatinine and excreted.

Aliases

Specimen Collection

Special Instructions

N/A

Preferred Specimen

3 mL of 24-hour urine collection submitted in a leak-proof urine container

Minimum Volume

2 mL

Instructions

Do not use preservatives. Keep refrigerated during collection.
⁠⁠⁠⁠⁠⁠⁠
Freeze immediately.
Record 24-hour urine volume on test request form and urine vial.

Patient Preparation

N/A

Storage

N/A

Transport Temperature

Frozen

Specimen Stability

Room temperature: 4 hours
Refrigerated: 24 hours
Frozen: 90 days

Limitations

N/A

Other Acceptable Specimens

N/A

Unacceptable Specimens

N/A

Order Code

CRTINE

EPIC (Premier) Code

LAB824

Includes

Creatinine

CPT code 81050 may be added at an additional charge for volume measurement

CPT Code

82540

Billing Code

670236
500002

CPT Statement

Methodology

Colorimetric (C) • Enzymatic

FDA Status

This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Physician Attestation of Informed Consent

N/A

Testing Laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153

Department

Reference Testing

Reference Range

Creatine, 24-Hour Urine

Male	6-56 mg/24hr
Female	8-170 mg/24hr

Setup Schedule / Expected Turnaround Time

Monday - Saturday morning; Report available: 1 day