The Thaena Donor Program
Our donors are not suppliers.
They are partners in a regenerative healing ecosystem — individuals whose exceptional microbial biodiversity helps advance science, restore depleted microbiomes, and redefine what thriving human health can look like.
This is Humans Healing Humans, at scale.
We Built Our Donor Program From Scratch
Because regenerative health starts at the source.
Unlike conventional donation models, we:
- Do not outsource donor screening
- Do not rely on minimum-viability health definitions
- Do not ignore health and wellness habits like diet and lifestyle
Instead, we curate a living reference for what thriving human biodiversity looks like in practice — and hold every downstream process to that same standard.
This allows us to set a higher bar for safety, consistency, and postbiotic diversity.
Most stool banks just screen for disease. We look for patterns of health across the whole system.
At Thaena, health is measured by resilience, regulation, and long-term balance — not just lack of disease. We look for individuals whose bodies demonstrate:
This level of biological coherence is rare. That rarity is exactly why it matters.
Who Qualifies
Eligibility for the Thaena Donor Program reflects whole-body health across time, not isolated metrics.
Thaena's Donor Program is constantly being improved upon by functional medicine professionals. Currently, candidates must meet strict criteria, including:
Final eligibility is determined through comprehensive clinical screening and advanced laboratory testing.
Fewer than 1% of applicants qualify.
Our standards are intentionally strict to ensure consistency, safety, and exceptional microbiome quality.
How the Selection Process Works
Every potential donor goes through a thoughtful, medically supervised process designed to protect both donors and customers.
Initial Application Review
A brief survey to ensure basic eligibility
Health & Lifestyle Questionnaires
Detailed history, bowel movement tracking, and food diary
Physician Interview
One-on-one review with our clinical team
Clinical Screening & Lab Testing
Blood, stool, and urine analysis
Ongoing Monitoring
Continued participation depends on sustained health over time, regular check ins, and follow up lab screenings
At Thaena, donor health is not a one-time decision — it's an ongoing relationship.
Because the microbiome responds to sleep, stress, diet, environment, and major life events, we monitor donors continuously and pause collection whenever balance may be temporarily disrupted.
"Everything affects the microbiome. When one of our donors experienced a significant loss in their family, we paused collection until their system returned to balance."
Dr. Andrea McBeth, CEO
This approach protects donors, preserves signal integrity, and reflects how seriously we take our responsibility to both sides of the healing relationship.
From Donor to Postbiotic Signal
Donor screening is only the first step in Thaena's broader safety and quality process.

From there, every batch undergoes:
Controlled collection
Patented sterilization for safety
Freeze-drying to preserve postbiotic signals
Third-party batch testing for safety, purity, and consistency
Frequently Asked Questions
Become a Partner in Healing
If you carry an unusually resilient, well-regulated microbiome, your biology may help others find their way back to health.
Confidential. Medically supervised. All testing covered.
Compensation provided.
