Patient Preparation

No special patient preparation required.
Obtain 24 hour urine collection container from physician office or laboratory.

Collect

Urine: Unpreserved 24 hour urine in a clean, dry container that has been refrigerated during collection.

  • Preferred container: 3 liter 24 hour urine collection container

AND

Blood: Collected within 24 hours of urine collection

  • Preferred container:
    • SST
  • Alternate container
    • Green-top, Lithium heparin
    • Red-top
    • Lavender-top, EDTA
    •  

24 Hour Urine Instructions

Specimen Preparation

URINE:
  • Refer to 24 Hour Urine Instructions in  "Collect" section.
  • Record height and weight of patient on requisition and container when submitting specimen.
  • Note: Non-local clinics submit a minimum 10 mL aliquot of the well mixed 24 hour urine.
BLOOD (Serum or Plasma):
  • Specimens should be centrifuged and separated from cells within 2 hours of collection.
No special handling required.

............................
SJH Lab instructions: Prior to testing urine, all urine specimens must be centrifuged at 4114 RCF x 5 min.
 

Unacceptable Conditions

URINE:
  • Preservative
  • Random
  • Unrefrigerated during collection
BLOOD (Serum or Plasma):
  • Obvious microbial contamination. 

Storage/Transport Temperature

Local clinics: Store refrigerated at 2-8° C and transport to lab as soon as possible.

Non-local clinics: See stability section to determine appropriate transport temperature for aliquoted specimen.

Stability (from collection to initiation)

URINE:
_Room temperature: <= 3 days
_Refrigerated: <=5 days
_Frozen: <= 6 months

BLOOD:
After serum or plasma is separated from cells
_Room temperature: <= 5 days
_Refrigerated: <= 30 days
_Frozen: <= 6 months

Temperature Key:
Room Temperature 20-25 °C; Refrigerated 2-8 °C; Frozen ≤-20 °C

Performed

Sunday - Saturday.

Performed

Sunday - Saturday.

Methodology

Two-point rate (Creatinine tests)
Calculation (Creatinine Clearance, BSA, 24 hr Creatinine)

Reported

Results will be reported within times below, after receipt in the lab.
STAT: 1 hour
Routine: 6 hours

Synonyms

  • Creatinine Clearance, 24 hour Urine
  • CC

Notes

Online menu updated 10/15/21.

Reference Interval

Test Component Sex Age Range Reference Range UOM**
Creatinine (Blood)        
  Female All 0.52 - 1.04 mg/dL
  Male All 0.66 - 1.25 mg/dL
Total Volume Urine        
  All All Not Apply mL
Height        
  All All Not Apply inch
Weight        
  All All Not Apply lb
Creatinine Clearance        
  Female All 75 - 115 mL/min
  Male All 85 - 125 mL/min
U24 Creatinine        
  All 0 min - 18 yrs None mg/24hr
  Female 18 yrs - 150 yrs 800 - 1800 mg/24hr mg/24hr
  Male 18 yrs - 150 yrs 1000 - 2000 mg/24hr mg/24hr
BSA*        
  All All Not apply m2
*BSA - Body Surface Area
**UOM - Units of Measure

CPT Codes

82575 Creatinine Clearance
82565 Creatinine, Serum or Plasma

LOINC

  • 2160-0 Creatinine
  • 58446-6 CC
  • 2161-8 U24 Creat
  • 19153-6 Total volume
  • 30211-7 Hours collected
  • 43372-2 Height
  • 29463-7 Weight

Performing Lab

SJH

Interfaced Client/Test Mapping

Mapping - Pending
Order Order code Result Result Code AOE Prompt Prompt Code Prompt Response Response Code
               
               
Collection

Patient Preparation

No special patient preparation required.
Obtain 24 hour urine collection container from physician office or laboratory.

Collect

Urine: Unpreserved 24 hour urine in a clean, dry container that has been refrigerated during collection.

  • Preferred container: 3 liter 24 hour urine collection container

AND

Blood: Collected within 24 hours of urine collection

  • Preferred container:
    • SST
  • Alternate container
    • Green-top, Lithium heparin
    • Red-top
    • Lavender-top, EDTA
    •  

24 Hour Urine Instructions

Specimen Preparation

URINE:
  • Refer to 24 Hour Urine Instructions in  "Collect" section.
  • Record height and weight of patient on requisition and container when submitting specimen.
  • Note: Non-local clinics submit a minimum 10 mL aliquot of the well mixed 24 hour urine.
BLOOD (Serum or Plasma):
  • Specimens should be centrifuged and separated from cells within 2 hours of collection.
No special handling required.

............................
SJH Lab instructions: Prior to testing urine, all urine specimens must be centrifuged at 4114 RCF x 5 min.
 

Unacceptable Conditions

URINE:
  • Preservative
  • Random
  • Unrefrigerated during collection
BLOOD (Serum or Plasma):
  • Obvious microbial contamination. 

Storage/Transport Temperature

Local clinics: Store refrigerated at 2-8° C and transport to lab as soon as possible.

Non-local clinics: See stability section to determine appropriate transport temperature for aliquoted specimen.

Stability (from collection to initiation)

URINE:
_Room temperature: <= 3 days
_Refrigerated: <=5 days
_Frozen: <= 6 months

BLOOD:
After serum or plasma is separated from cells
_Room temperature: <= 5 days
_Refrigerated: <= 30 days
_Frozen: <= 6 months

Temperature Key:
Room Temperature 20-25 °C; Refrigerated 2-8 °C; Frozen ≤-20 °C

Performed

Sunday - Saturday.
Ordering

Performed

Sunday - Saturday.

Methodology

Two-point rate (Creatinine tests)
Calculation (Creatinine Clearance, BSA, 24 hr Creatinine)

Reported

Results will be reported within times below, after receipt in the lab.
STAT: 1 hour
Routine: 6 hours

Synonyms

  • Creatinine Clearance, 24 hour Urine
  • CC

Notes

Online menu updated 10/15/21.
Result Interpretation

Reference Interval

Test Component Sex Age Range Reference Range UOM**
Creatinine (Blood)        
  Female All 0.52 - 1.04 mg/dL
  Male All 0.66 - 1.25 mg/dL
Total Volume Urine        
  All All Not Apply mL
Height        
  All All Not Apply inch
Weight        
  All All Not Apply lb
Creatinine Clearance        
  Female All 75 - 115 mL/min
  Male All 85 - 125 mL/min
U24 Creatinine        
  All 0 min - 18 yrs None mg/24hr
  Female 18 yrs - 150 yrs 800 - 1800 mg/24hr mg/24hr
  Male 18 yrs - 150 yrs 1000 - 2000 mg/24hr mg/24hr
BSA*        
  All All Not apply m2
*BSA - Body Surface Area
**UOM - Units of Measure
Administrative

CPT Codes

82575 Creatinine Clearance
82565 Creatinine, Serum or Plasma

LOINC

  • 2160-0 Creatinine
  • 58446-6 CC
  • 2161-8 U24 Creat
  • 19153-6 Total volume
  • 30211-7 Hours collected
  • 43372-2 Height
  • 29463-7 Weight

Performing Lab

SJH

Interfaced Client/Test Mapping

Mapping - Pending
Order Order code Result Result Code AOE Prompt Prompt Code Prompt Response Response Code
               
               

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