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Laboratory Test Detail

Last Updated: April 19, 2024 @ 9:13 am

1080

Creatinine with GFR

Specimen:Collect:
  • One SST

Also Acceptable:
  • One Green Top (Li Heparin)
  • One Green Top (Na Heparin)
  • One Red Top
Submit:
  • 1 mL (Min:0.5 mL) Serum . Submit Refrigerated. Submit in a Standard Transport Tube.

Also Acceptable:
  • 1 mL (Min:0.5 mL) Plasma . Submit Refrigerated. Submit in a Standard Transport Tube.
Special Handling:
  • Separate from cells ASAP
  • GFR is a calculation
    Can add to a previous Serum Creatinine Result.
    To estimate the glomerular filtration rate for African Americans, multiply the result provided by 1.21
Rejection Criteria:
  • Hemolyzed specimens
Stability:Ambient: 8 Hour(s); Refrigerated: 7 Day(s); Frozen: 1 Month(s); Incubated: Unacceptable
Performed:Mon-Fri
Reported:1-3 Day(s)
CPT Codes:
  • 82565
Interpretive Data:Please see report for interpretive data.

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

When found over a three month period, GFR less than 60 indicates Chronic Kidney Disease.

GFR calculation is not valid for patients under age 18 years.

Please note: the equation for eGFR calculation has been updated to the 2021 CKD-EPI Creatinine equation as recommended by the National Kidney Foundation and Association for Diagnostics and Laboratory Medicine.
Please note: Estimated GFR reference range change as of 09/05/2023.
Components:
  • 1014 - CREATININE, SERUM
  • 1040 - GFR ESTIMATION
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