Terms of Service

Last Updated: March 2026

Mittblod.se is a private, encrypted health data pipeline developed by Cessan Lean and Agile Coaching AB (org. nr. 559103-8699), a company registered in Sweden. The service is hosted and operated on servers located within the European Union. Throughout this document, "we", "us", and "our" refer to Cessan Lean and Agile Coaching AB.

1. Acceptance of Terms

By accessing and using Mittblod ("the Service"), you accept and agree to be bound by these Terms of Service in their entirety. If you do not agree, you must not use the Service.

2. Description of Service

Mittblod is a personal health data pipeline and tracking platform that allows you to:

  • Store and track biomarker data with end-to-end encryption
  • Visualise health trends and patterns over time
  • Use AI-powered features via your own API keys to query, process, and analyse your data
  • Optionally share data with healthcare providers

Mittblod is a data tool. It does not generate, provide, or suggest medical recommendations, diagnoses, treatment plans, or health advice in its standard configuration. Any analysis or output produced through the platform — including via custom prompts — is solely the result of tools you configure and control.

3. Not Medical Advice — Please Read Carefully

IMPORTANT: MITTBLOD IS NOT A MEDICAL DEVICE AND IS NOT A SUBSTITUTE FOR PROFESSIONAL MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT.

You must always consult a qualified, licensed healthcare professional before making any medical, dietary, pharmaceutical, or lifestyle decisions. This applies regardless of what Mittblod displays, what AI outputs it produces, or what custom prompts you configure.

Specifically:

  • Nothing produced by Mittblod — including AI-generated outputs from custom prompts — constitutes a medical diagnosis, clinical recommendation, or treatment plan.
  • Mittblod is not approved, certified, or regulated as a medical device in any jurisdiction.
  • Do not disregard or delay seeking professional medical advice based on anything you see in Mittblod.
  • In a medical emergency, contact emergency services immediately.

4. Custom Prompts and User-Configured AI

Mittblod allows you to customise the AI prompts used to process your health data. This means you have full control over — and full responsibility for — what you ask the AI to do. Mittblod provides a data pipeline; it does not control, review, or validate the outputs generated by prompts you write or modify.

If you configure a prompt to generate analysis, interpretations, comparisons, or conclusions about your health data, you acknowledge that:

  • Those outputs are generated by a general-purpose AI model using instructions you provided.
  • Those outputs are not medical advice and should not be treated as such.
  • You bear sole responsibility for how you use, interpret, or act on those outputs.
  • Mittblod is not liable for any outcomes arising from custom prompts, regardless of what they produce.

Mittblod must not be configured, modified, or used in an attempt to replace, replicate, or substitute for licensed medical care. Doing so is a misuse of the platform.

5. Your API Keys and Third-Party AI Services

5.1 Your Own API Keys

To use AI-powered features, you must provide your own API keys from providers such as Anthropic or OpenAI. Mittblod does not provide, subsidise, or manage these keys on your behalf.

5.2 Data Transmission to AI Providers

By using AI features, you acknowledge that:

  • Your health data (including blood tests, medications, journals, and demographics) will be transmitted to your chosen AI provider using your API key.
  • Data is sent directly from your browser to the AI provider — Mittblod does not receive, store, or process this data in transit.
  • Each AI provider operates under its own privacy policy and terms of service, which you are responsible for reviewing and accepting.
  • You control access to AI features by managing your own API keys.

5.3 Your Responsibilities

You are responsible for:

  • Obtaining, managing, and securing your API keys
  • All costs associated with API usage from third-party providers
  • Understanding and accepting the terms and privacy policies of AI providers you use
  • Revoking API keys immediately if you suspect unauthorised access

6. Data Storage and Encryption

6.1 What We Store

Your health data is stored on our servers encrypted using AES-256-GCM. This includes blood tests, medications, journals, and profile data. Metadata such as usernames and test dates is stored using standard security practices.

6.2 What We Can and Cannot Access

We can access: your encrypted data records and metadata (usernames, test dates, system information).

We cannot access: your decrypted health information (we do not hold your encryption keys), data transmitted to AI providers, or AI-generated insights (which are encrypted before storage).

7. User Accounts and Security

7.1 Account Creation

To create an account, you must provide a username and password. Your password is used to derive your encryption keys. If you lose your password, you lose access to your encrypted data — this is by design.

7.2 Recovery Keys

During registration, you will receive a recovery key. Store it securely offline (printed copy, password manager). This key allows you to reset your password without losing data. Mittblod cannot recover your data if you lose both your password and recovery key.

8. Acceptable Use

You agree not to:

  • Use the Service for any unlawful purpose
  • Attempt to breach, circumvent, or test security or authentication measures without authorisation
  • Reverse engineer, decompile, or disassemble any part of the Service
  • Use the Service to harm, threaten, or harass others
  • Upload malicious code, viruses, or harmful content
  • Configure Mittblod — through custom prompts or any other means — to act as or simulate a medical device, diagnostic tool, or clinical system
  • Represent outputs from Mittblod as medical advice or diagnoses to yourself or others

9. Disclaimer of Warranties

THE SERVICE IS PROVIDED "AS IS" WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED.

We make no warranties regarding accuracy, reliability, completeness, uninterrupted operation, security, or fitness for any particular purpose — including fitness for any medical or clinical purpose.

10. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW:

  • We are not liable for any indirect, incidental, special, consequential, or punitive damages.
  • We are not liable for any medical decisions, health outcomes, or clinical consequences arising from use of the Service — including outputs produced by custom AI prompts.
  • We are not liable for data loss, security breaches, or service interruptions.
  • We are not liable for any harm resulting from misuse of the platform as a medical device or clinical tool.
  • Our total aggregate liability to you shall not exceed €100.

11. Changes to These Terms

We may update these Terms at any time by posting a revised version with an updated date. Continued use of the Service after changes are posted constitutes your acceptance of the revised Terms.

12. Contact

For questions about these Terms:

By clicking "I Agree" during registration, you confirm that you have read, understood, and agree to these Terms of Service — including the medical disclaimer in Section 3 and the custom prompt policy in Section 4.