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23129 Glomerular Filtration Rate

Glomerular Filtration Rate
Test Code:
Synonyms/Keywords
GFR​, eGFR
Test Components
The glomerular filtration rate is a calculation -- it may be obtained by ordering a Comprehensive Metabolic Panel, Basic Metabolic Panel, Renal Function Panel, or Creatinine. Calculations are not available as orderable tests.​
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 Plasma/Serum​ Lithium-heparin Plasma Separator Tube (PST)​, Serum Separator Tube (SST)
Lithium or Sodium-heparin Green Top (GTT), Red Top Tube (RTT)
1 mL​ 0.3 mL​
Specimen Stability Information
Specimen Type Temperature Time
Plasma/Serum​ ​ ​ Ambient​ 7 days
Refrigerate​ 7 days​
Frozen​ 1 year​
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Bloomer​ ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Cadott ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Chetek ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Chippewa Falls ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Colby/Abbotsford ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Cornell ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Cumberland ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Diagnostic Treatment Center ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Eagle River ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Eau Claire ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Flambeau Hospital ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Hayward ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
Ladysmith​ ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Lake Hallie ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Lakeview Medical Center ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Marshfield​ ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
Menomonie Monday through Friday Less than 2 hours​ ​​IDMS Traceable MDRD Study Equation ​
​Mercer ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Merrill ​Monday through Saturday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Minocqua ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Mosinee ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Oakwood ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Phillips ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
Stettin​ ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Stevens Point ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Wausau ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
Wisconsin Rapids​ ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
Wittenberg​ ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
Test Information
Estimated glomerular filtration rate in mL/min/1.73m² is based on age, gender, and creatinine for patients in age range from 18-80 years. Formula assumes Caucasian ethnicity. For Afro-Americans, manually multiply result by 1.212.
Formula used is the Simplified MDRD (Modification of Diet in Renal Disease) 4 parameter IDMS equation for Adults, recommended by the NKDEP.
GFR = 175 x (creat^ -1.154) x (Age ^ -0.203) x 0.742 (if female)​
Reference Range Information
Performing Location Reference Range
All Performing Sites >= 60 mL / min / 1.73m² ​
Synonyms/Keywords
GFR​, eGFR
Test Components
The glomerular filtration rate is a calculation -- it may be obtained by ordering a Comprehensive Metabolic Panel, Basic Metabolic Panel, Renal Function Panel, or Creatinine. Calculations are not available as orderable tests.​
Ordering Applications
Ordering Application Description
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 Plasma/Serum​ Lithium-heparin Plasma Separator Tube (PST)​, Serum Separator Tube (SST)
Lithium or Sodium-heparin Green Top (GTT), Red Top Tube (RTT)
1 mL​ 0.3 mL​
Specimen Stability Information
Specimen Type Temperature Time
Plasma/Serum​ ​ ​ Ambient​ 7 days
Refrigerate​ 7 days​
Frozen​ 1 year​
Test Components
The glomerular filtration rate is a calculation -- it may be obtained by ordering a Comprehensive Metabolic Panel, Basic Metabolic Panel, Renal Function Panel, or Creatinine. Calculations are not available as orderable tests.​
Reference Range Information
Performing Location Reference Range
All Performing Sites >= 60 mL / min / 1.73m² ​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Bloomer​ ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Cadott ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Chetek ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Chippewa Falls ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Colby/Abbotsford ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Cornell ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Cumberland ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Diagnostic Treatment Center ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Eagle River ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Eau Claire ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Flambeau Hospital ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Hayward ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
Ladysmith​ ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Lake Hallie ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Lakeview Medical Center ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Marshfield​ ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
Menomonie Monday through Friday Less than 2 hours​ ​​IDMS Traceable MDRD Study Equation ​
​Mercer ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Merrill ​Monday through Saturday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Minocqua ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Mosinee ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Oakwood ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Phillips ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
Stettin​ ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Stevens Point ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
​Wausau ​Monday through Sunday​ ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
Wisconsin Rapids​ ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
Wittenberg​ ​Monday through Friday ​Less than 2 hours​ ​IDMS Traceable MDRD Study Equation ​
For billing questions, see Contacts
For most current information refer to the Marshfield Laboratory online reference manual.