Stem Cell Donor Exclusion Criteria

Donor Exclusion Criteria

Understanding who can and cannot donate stem cells

 

At the South African Bone Marrow Registry, donor and patient safety is our highest priority. Not everyone is eligible to donate stem cells, as certain medical, lifestyle, and demographic factors can increase risk to either the donor or the recipient.

This page outlines the donor exclusion criteria, helping you quickly understand whether you qualify to join the registry.

Basic Eligibility:

Under 16 or over 45 years old

Not living in South Africa (or leaving within 2 years)

Weight under 50kg or BMI over 40

Health Conditions That Exclude You in Stem Cell Donation

Infectious Diseases:


You cannot donate if you:

  • Are HIV positive
  • Have Hepatitis B or Hepatitis C
  • Have HTLV infection
  • Engage in high-risk sexual behavior that increases infection risk

These exclusions are in place to protect immunocompromised patients receiving transplants.

Blood & Immune Disorders:


Individuals with the following conditions are not eligible:

  • Inherited blood disorders (e.g., Sickle Cell Disease, Thalassemia, including carriers)
  • Bleeding disorders (e.g., Hemophilia, von Willebrand disease)
  • Autoimmune diseases such as:
    • Lupus
    • Rheumatoid Arthritis
    • Crohn’s disease

These conditions may affect both donor safety and stem cell quality.

Chronic Health Conditions:


You may be excluded if you have:

  • Uncontrolled diabetes
  • Epilepsy
  • Severe asthma (2+ attacks per year)
  • Heart disease or kidney disease
  • History of organ transplant
  • Any history of cancer
  • Neurological conditions such as:
    • Multiple Sclerosis (MS)
    • Parkinson’s disease
  • Mental health conditions requiring lithium or multiple antidepressants

 

Temporay Exclusions:


Some conditions may only temporarily prevent donation:

  • Active tuberculosis (TB) treatment
  • Recent infections or ongoing medical treatments
  • Temporary health instability

Eligibility may be reassessed once the condition is resolved.

Medical Related Exclusions:


Certain medications can disqualify donors, especially if they cannot be safely paused:

  • Blood thinners
  • Long-term steroid use
  • Antidepressants or anxiety medications
  • Any medication that cannot be safely stopped if matched with a patient

Always consult the SABMR registry team before making assumptions about medication eligibility.

Important Note:


If you are ineligible to donate blood, you are generally also ineligible to donate stem cells.

Why These Criteria Exist:


These guidelines ensure:

  • Donor safety during the collection process
  • The highest chance of successful transplantation
  • Reduced risk to patients with weakened immune systems
  • Compatibility and quality of stem cells collected