Quoiden combines genealogy and genetics to help families uncover hidden hereditary risks and access lifesaving care — all through a secure, consent-driven platform.


Quoiden began with a devastating loss no family should face. When seven-year-old Baine passed away from undiagnosed OTC deficiency, his family searched for answers—uncovering a hidden genetic pattern stretching across generations. Their work with genetic genealogists revealed more than 1,200 relatives potentially at risk, proving that family history can be a powerful tool for uncovering silent health conditions.
Today, Quoiden carries that discovery forward. Built to honor Baine’s memory, our platform helps families privately map their health history, understand their inherited risk, and access no-cost testing and expert guidance. What started as one family’s search for clarity has become a mission to ensure that lifesaving knowledge reaches the people who need it most.


Begin with our free prescreening to learn if you’re at risk for OTC deficiency. Those who qualify will receive a complimentary at-home genetic test, offering peace of mind and a chance for early intervention.
Have questions about Quoiden, OTC deficiency, or rare genetic diseases? Our FAQ provides clear answers and helpful resources to guide you.
OTC deficiency is a genetic condition that affects the body’s ability to break down protein. When protein can’t be processed properly, ammonia builds up in the bloodstream, which can be dangerous - especially for the brain. The good news is that once identified through genetic testing, OTC deficiency can be managed with proper medical care.
Symptoms of OTC deficiency can vary from mild to life-threatening. They may include:
* Nausea or vomiting
* Stomach pain
* Headaches
* Extreme tiredness
* Confusion or disorientation
* Trouble waking up
* Coma
In severe cases, untreated OTC deficiency can lead to sudden death.
OTC deficiency can affect anyone - babies, children, and adults of any sex. Because the condition is genetic, people can carry the gene without knowing it. Even if no one in your family has been diagnosed, you may still be at risk.
Yes. Testing for OTC deficiency is non-invasive and completely safe.
If your baby is showing symptoms, testing should be done as soon as possible.
Quoiden helps families understand their risk of OTC deficiency, connect with doctors, and access genetic testing.
We also support education and clinical research - always with your full consent.
Learn more about what we do here.
Yes! Getting tested for OTC deficiency is simple:
1. Start with a short prescreen questionnaire to see if you may be at risk.
2. If you’re flagged as at risk, you’ll complete a second, more detailed questionnaire to help a doctor determine whether testing is recommended.
3. If you qualify, you may receive free at- home genetic testing.A cheek-swab kit will be mailed to your home with clear, easy-to-follow instructions.
4. Once your sample is processed, a doctor reviews your results and explains the next steps.
No. A federal law called the Genetic Information Nondiscrimination Act (GINA) protects you. It prevents health insurers from using your genetic information to deny coverage or raise your rates.