LOINCActiveBoth

LOINC Code 98979-8: GFR Creatinine-based formula (CKD-EPI 2021)/1.73 sq M (S/P/Bld) [Vol rate/Area]

98979-8 is a LOINC code used to identify GFR Creatinine-based formula (CKD-EPI 2021)/1.73 sq M (S/P/Bld) [Vol rate/Area] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Glomerular filtration rate. It is commonly used with the system or sample type Ser/Plas/Bld.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Glomerular filtration rate. It is commonly used with the system or sample type Ser/Plas/Bld.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Both
  • Method: Creatinine-based formula (CKD-EPI 2021)/1.73 sq M

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

Glomerular filtration rate [Volume Rate/Area] in Serum, Plasma or Blood by Creatinine-based formula (CKD-EPI 2021)/1.73 sq M
Glomerular filtration rate
Glomerular filtration rate (GFR) is considered the best overall index of kidney function; however measured GFR is not practical in the routine clinical setting. Estimated glomerular filtration rate (eGFR) is a suitable alternative and can be calculated for adults >= 18 years using an equation incorporating the patient's age, gender, and measured serum/plasma/blood creatinine only (eGFRcr) (this term) or both serum/plasma/blood creatinine and serum/plasma cystatin C (eGFRcr-cys) [LOINC98980-6]. The serum/plasma/blood creatinine value is based on a measurement procedure that is traceable to the isotope dilution mass spectrometry (IDMS) reference measurement procedure for creatinine. The 2021 CKD-EPI equations used for eGFRcr and eGFRcr-cys do not have a race term as does the older estimating equations that they replace.[https://www.nejm.org/doi/pdf/10.1056/NEJMoa2102953]
Blood; Chemistry; GFR; Glom; Pl; PlasBld; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; SerPlBld; Serum; Serum or plasma; Serum, plasma or whole blood; Square Meter; SR; Volume rate/area; Volume Rate/Ratio; WB; Whole blood

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

GFR Creatinine-based formula (CKD-EPI 2021)/1.73 sq M (S/P/Bld) [Vol rate/Area]Glomerular filtration rate [Volume Rate/Area] in Serum, Plasma or Blood by Creatinine-based formula (CKD-EPI 2021)/1.73 sq MeGFRcr SerPlBld CKD-EPI 2021Glomerular filtration rateCHEMGFR, BloodArVRat

Frequently asked questions

Code details

Code98979-8
SystemLOINC
Display nameGFR Creatinine-based formula (CKD-EPI 2021)/1.73 sq M (S/P/Bld) [Vol rate/Area]
DescriptionGlomerular filtration rate
Short nameeGFRcr SerPlBld CKD-EPI 2021
ComponentGlomerular filtration rate
PropertyArVRat
TimingPt
System (specimen)Ser/Plas/Bld
ScaleQn
MethodCreatinine-based formula (CKD-EPI 2021)/1.73 sq M
ClassCHEM
Example unitsmL/min/1.73 sq M
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.72
Last changed2.79

Consumer names

GFR, Blood

Part names

Glomerular filtration rateArVRatPtSer/Plas/BldQnCreatinine-based formula (CKD-EPI 2021)/1.73 sq MVolume Rate/AreaPoint in time (spot)Serum, Plasma or Blood

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.