The immune system is smart.

VitaGraftTM Kidney is SMARTER.



Confidently rule out injury with a 94% NPV*1,2



Quantify dd-cfDNA using both fractional
abundance (%) & absolute quantification (cp/mL)



dd-cfDNA has a short half-life (20min - 2hrs), allowing almost immediate detection of injury & recovery3



VitaGraft Kidney is covered by Medicare



Receive results typically within 48 hours** to optimize patient management decisions


Easy to use

Seamlessly integrate into current workflows



The only reimbursed test on the market that uses dd-PCR to quantify dd-cfDNA***

*Calculated at 25% prevalence using biopsy-proven samples from combined data from references 1,2.
** Upon sample receipt.
*** dd-PCR is used to calibrate NGS, see references 3-5

VitaGraft Kidney lets you know sooner to act faster

Practical. Fast. Evidence-based.

86% of unnecessary biopsies triggered by elevated plasma creatinine in stable patients may be avoided using VitaGraft Kidney.1

Pioneering patient care together

VitaGraft Kidney

is a blood-based transplant monitoring test that quantifies the concentration of donor-derived cell-free DNA (dd-cfDNA) following kidney transplantation.

  • Optimized turnaround time
  • Negative predictive value (NPV) of 94%*1,2
  • Highly precise droplet-digital polymerase chainreaction (dd-PCR) technology
  • A personalized assay for each patient
  • Absolute and fractional quantification reported

*Calculated at a 25% prevalence using biopsy-proven samples.

Process overview

Step 1

Post-transplant patient blood sample drawn at transplant facility or local laboratory*

Step 2

Send samples to Oncocyte’s CAP/CLIA certified laboratory

Step 3

dd-cfDNA measured using dd-PCR

Step 4

Risk for active rejection reported

*The initial test requires a one-time urine sample in addition to blood to set the assay for the patient. Thereafter, we require blood only for all subsequent tests.

Manage the risk of transplant rejection

VitaGraft Kidney technology

Donor-derived cfDNA is used as a biomarker to assess organ health and rejection risk status. Through dd-PCR, VitaGraft Kidney determines a set of single-nucleotide polymorphisms (SNPs) specific to each patient.6

A subset of SNPs are selected from commonly-shared SNPs across the global population. This allows for dierentiation between the donor and recipient cfDNA. Using the selected personalized assay, dd-cfDNA is measured using absolute and relative quantification.6

With VitaGraft Kidney’s strong performance of up to 98% diagnostic specificity, up to 94% NPV,* and fast turnaround time, injury can be assessed with confidence.1,2

*Calculated at a 25% prevalence using biopsy-proven samples.

Organ health and dd-cfDNA

Time after transplantation

An increase in dd-cfDNA may indicate rejection

See our

Clinical evidence

VitaGraft resource library

For providers

For patients


  • CAP/CLIA-Certified Laboratory in Nashville, TN:
    • Monday – Friday: 6:30am CST – 12am CST
    • Saturday: 8am CST – 6pm CST
  • Customer Experience Team:
    • 8am EST – 5pm EST
  • VitaGraft is a blood-based transplant monitoring test that quantifies the concentration of donor-derived cell-free DNA (dd-cfDNA) following liver and kidney transplantation.
  • Increased amounts of dd-cfDNA following transplantation may indicate organ damage and possible rejection.
  • VitaGraft is not indicated in patients who are: pregnant, less than two weeks post-transplant for
    subsequent testing, recipients of an allograft from an identical twin, bone marrow transplant recipients,
    recipients of an allogeneic stem cell transplant, recipients of a non-liver or non-kidney organ transplant,
    or recipients of multiple organ transplants.
  • VitaGraft Liver and VitaGraft Kidney have different diagnostic thresholds (i.e., the amount of dd-cfDNA that may indicate organ damage differs between the two organs).
    • Kidney diagnostic thresholds: 0.5% and 50cp/mL
    • Liver diagnostic thresholds: 10% and 1000cp/mL
  • Although both tests quantify dd-cfDNA using blood, VitaGraft Kidney requires a urine sample for the initial test to set the assay for the patient. Thereafter, we require blood only for all subsequent tests.
  • Blood samples must be processed within 7 days of collection.
  • Less than 48 hours within specified hours of operation.
  • Through the online portal or by filling out a paper Test Requisition Form (TRF). Please contact your Local Representative or Oncocyte Customer Experience (844-621-8880) for any questions.
  • We offer zero interest payment plans for balances over $99. The payment plans are for 3 to 6 months.
  • An EOB is a statement from your health insurance plan describing what costs it will cover for medical care or products you’ve received. It is not a bill.
  • Patients can make a payment by check or credit card (accepted types: VISA, Mastercard, and Discover). We accept credit card payments over the phone. Checks can be sent to the lock box address: Oncocyte Corporation, PO Box 120293, Dallas, TX 75312-0293. We send statements with the mailing address and phone numbers to the patient every 30 days for 3 cycles.

Test We identify informative SNPs selected from a set of predefined SNPs. The informative SNP set for each patient is defined on the initial contact sample. For all subsequent tests, we measure the concentration of dd-cfDNA and provide a rejection risk report.

Order VitaGraft Kidney for your patients following kidney transplantation. Reach out to Oncocyte's Customer Service for ordering details.

We’re here to help

Oncocyte Customer Service can answer any questions you have. Please contact us at:

phone: 844-621-8880

We do not want cost to be a barrier for testing, patients can call (844-621-8880) or fax (844-584-3467) to see if they qualify for our financial assistance program.

REFERENCES: 1. Oellerich M, Shipkova M, Asendorf T, et al. (2019) Absolute quantification of donor-derived cell-free DNA as a marker of rejection and graft injury in kidney transplantation: Results from a prospective observational study. Am J Transplant 19(11):3087. 2. Akifova A, Budde K, Choi M, et al. (2023). Donor-Derived Cell-Free DNA in Biopsy-Proven Antibody-Mediated Rejection Versus Recurrent IgA Nephropathy After Kidney Transplantation. Kidney International Reports doi:10.1016/j.ekir.2023.07.011. 3. Oellerich M, Sherwood K, Keown P, et al. (2021). Liquid biopsies: donor-derived cell-free DNA for the detection of kidney allograft injury. Nat Rev Nephrol 17(9):591. 4. Altug Y, Liang N, Ram R, et al. (2019). Analytical Validation of a Single-nucleotide Polymorphism-based Donor-derived Cell-free DNA Assay for Detecting Rejection in Kidney Transplant Patients. Transplantation 103(12):2657. 5. Grskovic M, Hiller DJ, Eubank LA, et al. (2016) Validation of a Clinical-Grade Assay to Measure Donor-Derived Cell-Free DNA in Solid Organ Transplant Recipients. J Mol Diagn 18(6):890. 6. Beck J, Bierau S, Balzer S, et al. (2013) Digital droplet PCR for rapid quantification of donor DNA in the circulation of transplant recipients as a potential universal biomarker of graft injury. Clin Chem 59(12):1732. 7. Schutz E, Asendorf T, Beck J, et al. (2020) Time-dependent apparent increase in dd-cfDNA percentage in clinically stable patients between one and five years following kidney transplantation. Clin Chem 66(10):1290. 8. Osmanodja B, Akifova A, Budde K, et al. (2021). Absolute or Relative Quantification of Donor-derived Cell-free DNA in Kidney Transplant Recipients: Case Series. Transplant Direct 7(11):e778.

© 2024 Oncocyte Corporation. All Rights Reserved. The VitaGraft Kidney Test has been developed and its performance characteristics determined by Oncocyte. The VitaGraft Kidney Test has not been cleared or approved by the US Food and Drug Administration (FDA). Oncocyte's laboratory oering the VitaGraft Kidney Test is CAP-accredited and CLIA-certified.

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