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Laboratory Test Detail

Last Updated: May 26, 2022 @ 11:14 pm

1100

Creatinine Clearance

Specimen:Collect:
  • One SST
  • Timed Urine in Timed Urine Container

Also Acceptable:
  • One Red Top
Submit:
  • 1 mL (Min:0.5 mL) Serum . Submit Refrigerated. Submit in a Standard Transport Tube.
  • 10 mL (Min:5 mL) Aliquot(s) Timed Urine in Sterile Specimen Container. Submit Refrigerated.
Special Handling:
  • 24 HR Urine Collection Preferred
  • Keep Specimen Refrigerated During Collection
  • State Height
  • State Volume
  • State Weight
  • State number of hours of collection.
Rejection Criteria:
  • Serum specimen must be collected within 24 hours of urine collection start or finish.
Stability:Ambient: 8 Hour(s); Refrigerated: 6 Day(s); Frozen: 1 Month(s); Incubated: Unacceptable
Methodology:
  • Colorimetric
  • Kinetic
Performed:Mon-Fri
Reported:1-3 Day(s)
CPT Codes:
  • 82575
Interpretive Data:Please see report for interpretive data.

ESTIMATED GFR Reference Range:
GFR = Greater than or equal to 90: Kidney damage with normal or increased GFR.
GFR = 60-89: Kidney damage with mild decreased GFR.
GFR = 30-59: Moderate decreased GFR.
GFR = 15-29: Severe decreased GFR.
GFR = Less than 15: Kidney Failure.

GFR = Less than 60: Chronic Kidney Disease, if found over a 3 month period.
For African Americans, multiply the calculated GFR by 1.21.
GFR calculation is not valid for patients under age 18 years.
For patients over age 70 please interpret results with caution as results have not been validated for this calculation method.

Please Note: Estimated GFR reference range change as of 10/18/2021.
Components:
  • 1069 - CREATININE, SERUM
  • 1040 - GFR ESTIMATION
  • 1111 - CREAT CLEAR
  • 2490 - VOLUME (ML)
  • 2491 - HRS OF COLLECTION
  • 2498 - CREATININE, URINE
  • 2499 - BODY SURFACE AREA
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