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Living Donor Calculator

Reviewed by Calculator Editorial Team

This living donor calculator helps you determine your eligibility to donate a kidney to a family member or friend. It evaluates key factors including age, health status, and blood type compatibility to provide a comprehensive assessment.

How the Living Donor Calculator Works

The living donor calculator evaluates several critical factors to determine your eligibility to donate a kidney. The primary considerations include:

  • Age and overall health status
  • Blood type compatibility with the recipient
  • Medical history and current medications
  • Family history of kidney disease

Eligibility Formula

The calculator uses a weighted scoring system where each factor is assigned a point value based on medical guidelines. The total score determines eligibility:

Total Score = (Age Score × 0.3) + (Health Score × 0.4) + (Blood Type Score × 0.2) + (Family History Score × 0.1)

If the total score is 70 or higher, you're likely eligible for evaluation by a transplant team.

For example, a 45-year-old donor with excellent health, compatible blood type, and no family history of kidney disease would likely score above 70. The calculator provides a detailed breakdown of your score and explains each component.

Donor Eligibility Requirements

To be considered a living kidney donor, you must meet several key requirements:

  • Be between 18 and 65 years old
  • Have normal kidney function (GFR above 60)
  • Be in good overall health
  • Have a compatible blood type with the recipient

Important Considerations

While the calculator provides an initial assessment, final eligibility is determined by a transplant team. Some donors may need additional testing or medical clearance.

The calculator evaluates your age, health status, and blood type compatibility to provide an initial estimate of your eligibility. However, medical professionals will conduct a thorough evaluation before making a final determination.

Blood Type Compatibility

Blood type compatibility is a critical factor in living kidney donation. The most common blood type groups are:

  • A, B, AB, and O
  • Each type has positive and negative Rh factors

Compatibility Rules

A recipient can receive kidneys from donors with:

  • Matching blood type (including Rh factor)
  • O-negative donors can give to any blood type
  • AB-positive recipients can receive from any blood type

The calculator checks your blood type against the recipient's type to determine compatibility. For example, an A-positive donor can donate to A-positive, AB-positive, and AB-negative recipients.

Potential Risks and Considerations

While living kidney donation is generally safe, there are potential risks to consider:

  • Minor surgical risks
  • Possible long-term kidney function changes
  • Emotional and physical recovery period

Recovery Timeline

Most donors recover within 6-12 months. Some may experience temporary kidney function changes that stabilize over time.

The calculator provides an estimate of potential risks based on your health profile. However, individual recovery varies and should be discussed with a medical professional.

Frequently Asked Questions

How accurate is the living donor calculator?

The calculator provides an initial estimate based on standard medical guidelines. For final eligibility, consult with a transplant team and medical professional.

Can I donate to any family member?

Eligibility depends on blood type compatibility and medical evaluation. The calculator helps assess your potential as a donor.

What happens if I'm not eligible?

The calculator provides guidance on next steps, including alternative donation options or medical evaluations to improve eligibility.

How long does the donation process take?

From initial evaluation to recovery, the process typically takes 6-12 months, depending on individual health factors.