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22481 Creatinine Clearance (Corr. for Ht/Wt)

Creatinine Clearance (Corr. for Ht/Wt)
Test Code: CRCLHW
Synonyms/Keywords
​​CRCLHW, Creatinine Clearance w/ Ht & Wt​
Test Components
Urine and Blood Creatinine​
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
​No ​
​
24 Hour Urine
24 Hour Urine jug without preservative
24 Hour Urine jug with 7 g sulfamic acid, 20 mL 6 N HCL, 25 mL 33% acetic acid, 10 g boric acid, or 5 g sodium carbonate
10 mL
0.5 mL


​Plasma/ Serum​
(*See Collection Instructions)
​Lithium-heparin Plasma Separator Tube (PST)
​Serum Separator Tube (SST), Lithium or Sodium-Heparinized Green Top Tube (GTT) or Red Top Tube (RTT)
​1 mL
​0.3 mL
​
Collection Processing Instructions

*If there is no other blood creatinine order on the same encounter within 24 hours of ​urine collection a blood order of .CREAT (Creatinine Level) will be reflexed when the urine order is completely activated and should be drawn when the patient returns the timed urine collection.

Note: Blood specimens are acceptable no earlier than 24 hours prior to the start of the urine collection or no later than 24 hours after the collection ends.

Urine

  • Indicate the collection time.
  • The total volume must be measured, recorded and included with the test request.
  • Patient's height (within 1 inch) and weight (within 10 lbs) should be submitted with the request to allow for result correction to standardized 1.73 sq. meter body surface area.
  • If height and weight are not available, see "CRCL" test code instead of "CRCLHW"​​

Specimen Stability Information
Specimen Type Temperature Time​
Plasma​/Serum ​ ​Ambient 7 days
​Refrigerate ​7 days
​Urine - No Preservative ​ Ambient ​2 hours
​Refrigerate ​4 days
​Urine - With Preservative ​Refrigerate ​7 days
Rejection Criteria

​If either the blood or urine specimen is not available, the test cannot be performed.

Performing Laboratory Information

Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​​Beaver Dam
​Monday through Sunday​Less than 2 hours​Modified Jaffe Reaction/Siemens Dimension​
Marshfield​​
​Monday through Sunday​
Less than 2 hours​Modified Jaffe Kinetic Fixed Assay/Beckman Coulter AU​​
​Rice Lake
Monday through Sunday​​Less than 2 hours​​Modifed Jaffe Reaction/Siemens Dimension​
Weston​
 ​Monday through Sunday​​Less than 2 hours​Modified Jaffe Reaction/ Siemens Atellica
​
Reference Range Information
Performing Location Reference Range
All Performing Sites CLEARANCE, mL/min. 1.73m2
 MALE
  0 - 1 month: 40 - 65   
2 mo - 19 yrs: 92 - 150
20 - 29 years: 85 - 143
30 - 39 years: 78 - 136
40 - 49 years: 72 - 130
50 - 64 years: 65 - 123 
        > 65 yrs: 58 - 116 
FEMALE
   0 -1 month: 40 - 65    
2 mo - 19 yrs: 86 - 140
20 - 29 years: 79 - 133
30 - 39 years: 73 - 126
40 - 49 years: 67 - 121
50 - 64 years: 60 - 114 
        > 65 yrs: 54 - 108 ​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82570  ​
​
 ​Creatinine, other source
​82565
​
​​
​Creatinine, blood
​If needed​
Synonyms/Keywords
​​CRCLHW, Creatinine Clearance w/ Ht & Wt​
Test Components
Urine and Blood Creatinine​
Ordering Applications
Ordering Application Description
4medica

Creatinine Clearance (Corr. for Ht/Wt)

​Cerner ​Creatinine Clearance (Corr. for Ht/Wt)
CRCLHW
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
​No ​
​
24 Hour Urine
24 Hour Urine jug without preservative
24 Hour Urine jug with 7 g sulfamic acid, 20 mL 6 N HCL, 25 mL 33% acetic acid, 10 g boric acid, or 5 g sodium carbonate
10 mL
0.5 mL


​Plasma/ Serum​
(*See Collection Instructions)
​Lithium-heparin Plasma Separator Tube (PST)
​Serum Separator Tube (SST), Lithium or Sodium-Heparinized Green Top Tube (GTT) or Red Top Tube (RTT)
​1 mL
​0.3 mL
​
Collection Processing

*If there is no other blood creatinine order on the same encounter within 24 hours of ​urine collection a blood order of .CREAT (Creatinine Level) will be reflexed when the urine order is completely activated and should be drawn when the patient returns the timed urine collection.

Note: Blood specimens are acceptable no earlier than 24 hours prior to the start of the urine collection or no later than 24 hours after the collection ends.

Urine

  • Indicate the collection time.
  • The total volume must be measured, recorded and included with the test request.
  • Patient's height (within 1 inch) and weight (within 10 lbs) should be submitted with the request to allow for result correction to standardized 1.73 sq. meter body surface area.
  • If height and weight are not available, see "CRCL" test code instead of "CRCLHW"​​

Specimen Stability Information
Specimen Type Temperature Time​
Plasma​/Serum ​ ​Ambient 7 days
​Refrigerate ​7 days
​Urine - No Preservative ​ Ambient ​2 hours
​Refrigerate ​4 days
​Urine - With Preservative ​Refrigerate ​7 days
Rejection Criteria

​If either the blood or urine specimen is not available, the test cannot be performed.

Test Components
Urine and Blood Creatinine​
Reference Range Information
Performing Location Reference Range
All Performing Sites CLEARANCE, mL/min. 1.73m2
 MALE
  0 - 1 month: 40 - 65   
2 mo - 19 yrs: 92 - 150
20 - 29 years: 85 - 143
30 - 39 years: 78 - 136
40 - 49 years: 72 - 130
50 - 64 years: 65 - 123 
        > 65 yrs: 58 - 116 
FEMALE
   0 -1 month: 40 - 65    
2 mo - 19 yrs: 86 - 140
20 - 29 years: 79 - 133
30 - 39 years: 73 - 126
40 - 49 years: 67 - 121
50 - 64 years: 60 - 114 
        > 65 yrs: 54 - 108 ​
For more information visit:
Performing Laboratory Information

Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​​Beaver Dam
​Monday through Sunday​Less than 2 hours​Modified Jaffe Reaction/Siemens Dimension​
Marshfield​​
​Monday through Sunday​
Less than 2 hours​Modified Jaffe Kinetic Fixed Assay/Beckman Coulter AU​​
​Rice Lake
Monday through Sunday​​Less than 2 hours​​Modifed Jaffe Reaction/Siemens Dimension​
Weston​
 ​Monday through Sunday​​Less than 2 hours​Modified Jaffe Reaction/ Siemens Atellica
​
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
82570  ​
​
 ​Creatinine, other source
​82565
​
​​
​Creatinine, blood
​If needed​
For most current information refer to the Marshfield Laboratory online reference manual.