Estimated Glomerular Filtration Rate (eGFR) with Creatinine and Cystatin C

Estimated Glomerular Filtration Rate (eGFR) with Creatinine and Cystatin C

Test Code

13581
82565, 82610
CPT Code is subject to a Medicare Limited Coverage Policy and may require a signed ABN when ordering.
13581
82565, 82610
CPT Code is subject to a Medicare Limited Coverage Policy and may require a signed ABN when ordering.
Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.
In-home collection may be available in your area for purchase through Quest Mobile.

Clinical Significance

Estimated Glomerular Filtration Rate (eGFR) with Creatinine and Cystatin C - The estimated Glomerular Filtration Rate (eGFR) with Creatinine and Cystatin C is supported by the National Kidney Foundation and was specifically requested by the NKF as part of the organization's 2021 announcement of race-free equations for estimating kidney function.

Test Resources

Test Guide

Laboratory Testing for Chronic Kidney Disease Diagnosis and Management

Test Details

Includes

  • Creatinine
    Cystatin C
    eGFR

Methodology

Spectrophotometry (SP) • Particle Enhanced Turbidimetric Immunoassay (PETIA)

Reference Range(s)

See Laboratory report

Alternative Name(s)

Creat

LOINC® Codes, Performing Laboratory

Service Area must be determined
Creatinine
Cystatin C
eGFR

Methodology

Spectrophotometry (SP) • Particle Enhanced Turbidimetric Immunoassay (PETIA)

Reference Range(s)

See Laboratory report

Alternative Name(s)

Creat
Service Area must be determined

Preferred Specimen(s)

2 mL serum

Minimum Volume

1 mL

Transport Container

Transport tube

Transport Temperature

Room temperature

Specimen Stability

  • Room temperature: 7 days
    Refrigerated: 7 days
    Frozen: 28 days

Reject Criteria

Grossly icteric • Anticoagulants other than heparin

Setup Schedule

Service Area must be determined
2 mL serum
1 mL
Transport tube
Room temperature
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Grossly icteric • Anticoagulants other than heparin
Service Area must be determined
Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.
In-home collection may be available in your area for purchase through Quest Mobile.
Test Details

Clinical Significance

Test Resources

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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