Methodology
How we build and maintain the directory.
We combine provider submissions with publicly available accreditation information and direct verification to keep listings structured and comparable.
Policy updated: January 27, 2026. Updates to listings are ongoing as providers confirm details or submit documentation.
1. Source discovery
We look at public directories, accreditation bodies, and provider submissions to identify legitimate testing organizations.
2. Provider submission
Providers submit services, testing methods, coverage, and compliance standards through our listing form.
3. Normalization
We standardize terminology for test types, collection methods, and compliance labels so listings can be compared side by side.
4. Review
Each submission is reviewed for completeness, contact validity, and alignment with known accreditation requirements.
5. Publish and monitor
Listings go live once reviewed, and we encourage providers to update details as locations or services change.
6. Ongoing verification
We periodically re-check key fields such as accreditation status, collection methods, and contact channels to keep the data current.
Verification signals we prioritize
- Accreditation or certification documentation from recognized bodies.
- Active business contact details and official provider domains.
- Clear service menus and stated testing methods.
- Coverage details that match the provider's stated geography.
Ranking and sponsored placement
Providers are not ranked based on payments. Featured or sponsored placements are labeled and only apply to visibility within the directory.
We display sponsored listings first only where explicitly marked as featured.