CREATININE CLEARANCE

Message

Submit the Total Volume in mLs.
Submit Height in INCHES only (do not submit as feet and inches).
Submit Weight as a WHOLE NUMBER only (do not include "lbs" or any other text).

Test Code

NCRCL

CPT Codes
82575

Includes

Includes: Height, Weight, BSA (body surface area), Total volume, Serum creatinine, Urine creatinine, and Creatine clearance.

Preferred Specimen

2 containers:

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

Minimum Volume

10 mL urine aliquot and
0.5 mL serum

Other Acceptable Specimens

or 2 containers:

1 Green tube (Lithium Heparin) and
24 Hour Urine Container without preservative (aliquot or transferurine into a transfer tube and note the total volume)

Instructions

Mix the specimen well and measure the 24-Hour volume
Note the total volume in mLs.
Pour off 20 mL of urine into a separate plastic screw-cap container.
Note the patient height in inches.
Note the patient weight as a whole number.
Centrifuge blood tube(s) for complete separation of plasma/serum and red cells.
If whole blood was collected, aliquot plasma.
Refrigerate both urine and serum/plasma specimens until tested.

Transport Container

Urine: Plastic screw-cap container
Serum or Plasma: Standard transport tube

Transport Temperature

Refrigerate

Specimen Stability

2-8°C up to 4 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Incomplete collection

Methodology
Enzymatic Rate

Setup Schedule

M, T, W, Th, F, Sa, Sun

Report Available

Within 24 hours of receipt at the performing laboratory.

Reference Range

Creatinine Urine 24hr	0.7-1.6 G/24 hr
Creatinine	0.6-1.2 mg/dL
Creatinine Clearance	71-151 mL/min
eGFR Non-African American	>60
eGFR African American	>60

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)

Last Updated: September 30, 2024

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.