| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Creatinine Clearance, Timed Urine with Plasma or Serum
MessagePlasma/Serum and Urine are required.
Test Code
CRCLA - NOCO
CPT Codes
82565, 82575
Preferred Specimen
1 mL plasma from Green top (Lithium Heparin)
AND
Entire specimen or 10 mL well mixed aliquot from 24 hour Urine Collection
AND
Entire specimen or 10 mL well mixed aliquot from 24 hour Urine Collection
Minimum Volume
0.5 mL plasma or serum
0.5 mL urine
0.5 mL urine
Other Acceptable Specimens
1 mL serum from SST or Red Top
Instructions
- Plasma/Serum must be obtained within 12 hours of the collection of urine.
- Height and Weight are required for processing.
- Collect urine for 24 hours.
- Refrigerate specimen during collection.
- Starting and ending times of collection are required for processing.
- Total Volume is required for processing.
Specimen Stability
| Temperature | Time |
| Refrigerated - Serum | 5 days |
| Refrigerated - Urine | 5 days |
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis
Methodology
Bichromatic Rate
Setup Schedule
Monday through Sunday; Continuously
Report Available
Same day
Reference Range
Male
0-6 months: 50 – 75 mL/min
6-18 months: 50 – 110 mL/min
18 months – 150 years: 85 – 125mL/min
Female
0-6 months: 50 – 75 mL/min
6-18 months: 50 – 110 mL/min
18 months – 150 years: 75 – 115mL/min
0-6 months: 50 – 75 mL/min
6-18 months: 50 – 110 mL/min
18 months – 150 years: 85 – 125mL/min
Female
0-6 months: 50 – 75 mL/min
6-18 months: 50 – 110 mL/min
18 months – 150 years: 75 – 115mL/min
Clinical Significance
Creatinine is an endogenous substance most commonly used to measure the glomerular filtration rate (GFR) of the
kidneys. The linear decrease of creatinine clearance over time, as renal function fails, has been thoroughly documented
for several forms of chronic glomerulonephritis (including chronic membranous glomerular nephritis, diabetic
nephropathy, chronic interstitial nephritis, and at least some cases of chronic pyelonephritis).
kidneys. The linear decrease of creatinine clearance over time, as renal function fails, has been thoroughly documented
for several forms of chronic glomerulonephritis (including chronic membranous glomerular nephritis, diabetic
nephropathy, chronic interstitial nephritis, and at least some cases of chronic pyelonephritis).
Performing Laboratory
Banner Fort Collins Medical Center Laboratory
Mckee Medical Center Laboratory
North Colorado Medical Center Laboratory
