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

Test Code

13581

CPT Codes
82565, 82610

Includes

Creatinine
Cystatin C
eGFR

Preferred Specimen

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 (Eg, hemolysis? Lipemia? Thaw/Other?)

Grossly icteric • Anticoagulants other than heparin

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

Setup Schedule

Set up: Daily; Report available: 1-3 days

Reference Range

See Laboratory report

Clinical Significance

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.

Performing Laboratory

Quest Diagnostics Nichols Institute

14225 Newbrook Drive

Chantilly, VA 20153

Last Updated: November 6, 2024

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.