CREATININE, URINE, 24 HOUR

Test Code

CR24U

CPT Codes
82570

Preferred Specimen

24 Hour Urine Container without preservative
(aliquot or transfer urine into a transfer tube and note the total volume)

Minimum Volume

4mL aliquot

Other Acceptable Specimens

Urine preserved with Boric Acid will be accepted.
Urine treated with 6N HCL will be accepted.

Instructions

Mix the specimen well and measure the 24-hour volume
Record the total volume
Aliquot (pour off) 20 mL of urine into a separate plastic screw-cap container
Refrigerate if not tested immediately

Transport Temperature

Refrigerate

Specimen Stability

2-8°C up to 4 days

Methodology
Enzymatic rate

Setup Schedule

M, Tu, W, Th, F, Sa, Su

Report Available

Report available within 24 hours of receipt at the performing laboratory.

Reference Range

Age in Years	Male Reference Range	Female Reference Range
3-8	140-700 mg/24hr	140-700 mg/24hr
9-12	300-1300 mg/24hr	300-1300 mg/24hr
13-17	500-2300 mg/24hr	400-1600 mg/24hr
18-50	1000-2500 mg/24hr	700-1600 mg/24hr
51-80	800-2100 mg/24hr	500-1400 mg/24hr
81 and older	600-2000 mg/24hr	400-1300 mg/24hr

Clinical Significance

Used in the diagnosis and treatment of renal diseases, in monitoring renal dialysis, and as a calculation basis for measuring other urine analytes.

Performed By
Alverno Laboratories

Performing Laboratory
Alverno Central Lab
NCHB1 (Chemistry, Beckman AU)

Additional Information
24 Hour Urine Collection

Last Updated: July 5, 2023

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.