98979-8
LOINC Code
| LOINC code | 98979-8 | |
|---|---|---|
| name | ||
| description | 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) [LOINC: 98980-6]. 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] | |
| status | ACTIVE | |
Fully-Specified Name | ||
| component | Glomerular filtration rate | |
| property | ArVRat = Volume Rate/Area | |
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | |
| system | Ser/Plas/Bld Ser = Serum Plas = Plasma Bld = Whole blood | |
| scale | Qn = Quantitative: The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256 | |
| method | Creatinine-based formula (CKD-EPI 2021)/1.73 sq M | |
Additional Names | ||
| short name | 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; | |
Basic Attributes | ||
| class | CHEM | |
| type | 1 Laboratory | |
| order vs. observation | eGFRcr SerPlBld | |
| example UCUM units | mL/min/1.73 sq M The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org) | |
History/Usage | ||
| first released | ||
| last updated | 2.79 | |
| last change type | NAM - change to Analyte/Component | |
| change reason | mL/min/{1.73_m2} | |
Related Names | ||
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Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.
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