Privacy Policy
Last updated: July 21, 2026
1. Information We Collect
TestSubstances ("we," "our," or "us") operates testsubstances.com (the "Site"). We collect minimal information:
- Usage Data: Page views, affiliate link clicks, and referral sources via Google Analytics (GA4). This includes anonymized IP addresses, browser type, device type, and pages visited.
- Cookies: Google Analytics sets cookies for site measurement. See Section 4.
- Email Address: Only if you voluntarily subscribe to our newsletter or download a resource. We use this solely for delivering the requested content.
- Affiliate Click Data: When you click an affiliate link, we log an anonymized event to count referrals. We do not store personal identifiers with this data.
2. How We Use Information
- To understand how visitors use our harm reduction resources and improve content
- To count affiliate referrals for commission tracking (no personal data shared with merchants beyond the click itself)
- To deliver email content you've requested (newsletter, PDF downloads)
- To comply with legal obligations
We never sell, rent, or trade your personal information.
3. Third-Party Services
We use the following third-party services that may collect data:
| Service | Purpose | Privacy Policy |
|---|---|---|
| Google Analytics (GA4) | Site usage measurement | policies.google.com/privacy |
| TestKitPlus | Affiliate product referrals | testkitplus.com/privacy-policy |
4. Cookies
Cookies are small text files stored on your device. We use:
- Google Analytics cookies — for distinguishing users and measuring site usage (_ga, _ga_*). 2-year expiry.
You can disable cookies in your browser settings.
5. Data Retention
- Google Analytics data: retained per Google's default settings (26 months for user-level data)
- Affiliate click logs: retained indefinitely in aggregate (no personal identifiers)
- Email addresses: retained until you unsubscribe
6. Your Rights
Depending on your jurisdiction, you may have rights to:
- Access the personal data we hold about you
- Request correction or deletion of your data
- Withdraw consent for email communications (unsubscribe link in every email)
To exercise these rights, contact us at the email below.
7. Children's Privacy
This site is not intended for individuals under the age of 18. We do not knowingly collect information from children. Harm reduction information is educational material for adults.
8. Changes to This Policy
We may update this policy. Changes will be posted on this page with an updated date.