Organ Transplant Rejection Risk Calculator

Estimate acute and chronic rejection risk for kidney, liver, and heart transplants based on HLA mismatch, PRA, donor-specific antibodies, and immunosuppression adherence.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Estimate acute and chronic rejection risk for kidney, liver, and heart transplants based on HLA mismatch, PRA, donor-specific antibodies, and immunosuppression adherence

Each component has a specific meaning:

  • HLA mismatch — The hla mismatch recorded for the patient or scenario being assessed.
  • PRA — The pra recorded for the patient or scenario being assessed.
  • Donor-specific antibodies — The donor-specific antibodies recorded for the patient or scenario being assessed.
  • Immunosuppression adherence — The immunosuppression adherence recorded for the patient or scenario being assessed.

Note: Interpret the transplant rejection risk result against the clinical thresholds and context described above.

How to Use

Enter the HLA mismatch, PRA, donor-specific antibodies, immunosuppression adherence for the patient or scenario you are assessing. Estimate acute and chronic rejection risk for kidney, liver, and heart transplants based on HLA mismatch, PRA, donor-specific antibodies, and immunosuppression adherence. Use the transplant rejection risk result to inform your clinical assessment.

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Frequently Asked Questions