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HelpTest Code CRCLR CREATININE CLEARANCE, SERUM AND URINE
Additional Codes
| Software | Test Code |
|---|---|
| Label Text | CRCLR |
| EPIC | LAB818 |
Performing Laboratory
NorDx Laboratories
Useful For
A renal function test to measure glomerular filtration rate
Method Name
Enzymatic Colorimetric Assay
Reference Values
66 - 143 mL/min
Click here to view the Estimated Glomerular Filtration Rate Interpretation Guide
Days and Times Test Performed
Monday through Sunday
Report Available
1 Day
Available Stat
Profile Information
|
Individual Test Description |
|---|
| COLLECTION TIME IN MINUTES |
| CREATININE |
| CREATININE CLEARANCE, 24 HOUR URINE |
| CREATININE, 24 HOUR URINE |
| DATES OF COLLECTION, 24 HOUR URINE |
| EGFR, AFRICAN AMERICAN |
| EGFR, NON-AFRICAN AMERICAN |
| VOLUME, 24 HOUR URINE |
Specimen Type
Submit all of the following:
~ Serum
~ Urine, 24-Hour
Preferred Container
24-Hour Urine Container – For urine testing no preservative is preferred; HCL, Acetic Acid, Boric Acid, Sodium Carbonate are acceptable.
Serum Separator Tube (SST)
Preferred Volume
Serum: 1 mL (Serum Separator Tube (SST))
Urine, 24-Hour: 10 mL (24-Hour Urine Container)
Minimum Volume
Serum: 0.3 mL (Serum Separator Tube (SST))
Urine, 24-Hour: 1 mL (24-Hour Urine Container)
Specimen Collection and Handling
Both serum and urine are required for this test (see below):
SERUM/PLASMA:
1. Spin specimen, separate from clot and send refrigerated. Label specimen appropriately (serum).
2. Serum specimen must be drawn within 24 hours of start or completion of urine collection
URINE:
1. No preservative preferred; HCL, Acetic Acid, Boric Acid, Sodium Carbonate are acceptable. Refrigerate specimen during collection.
2. Prior to aliquoting sample during processing, mix specimen well and record volume and any urine preservative information.
3. Label specimen appropriately (urine) and send refrigerated.
Click here to view the Urine Aliquoting Guide for Processing
Specimen Stability Information
Specimen Type: Serum
Refrigerated: 7 Days
Must be spun/separated within: 2 Hours
Note: Same stability limits apply to plasma.
Specimen Type: Urine, 24-Hour
Refrigerated: 6 Days
Add On Capable
Yes
Advance Beneficiary Notice Requirements
No ABN Required
CPT Code Information
|
CPT Code |
CPT Description |
CPT Disclaimer |
|---|---|---|
| 82575 | Creatinine Clearance, Quantitative |
Keywords
CREATININE
Performing Laboratory Location
NorDx Laboratories
Acceptable Alternative Container(s)
Plasma Separator Tube (PST)
Red Top Tube
Clinical Significance
Creatinine Clearance Calculation:
((Total Volume 24 Hour Urine, mL / 24 Collection Time, Minutes) x Creatinine, Urine) / Creatinine, Blood
Example:
Total Volume 24 Hour Urine : 2424 mL/24H
Collection Time: 1440 minutes
Creatinine, Blood: 2.00 mg/dL
Creatinine, Urine: 200.0 mg/dL
((2424 mL / 1440 minutes) x 200.0 mg/dL) / 2.0 mg/dL = 168.3 mL/min
CRCLR = 168.3 mL/min