---
title: DocVis
emoji: 🏆
colorFrom: yellow
colorTo: green
sdk: streamlit
sdk_version: 1.44.1
app_file: app.py
pinned: false
---
# 🩺 SynapseAI: Interactive Clinical Decision Support Assistant (v2 - UMLS/FDA Integrated)

**SynapseAI** is an enhanced prototype demonstrating an AI-powered clinical decision support system. Built with a modular structure (`app.py` for UI, `agent.py` for logic), it uses Streamlit, Langchain, LangGraph, Groq (running Llama 3), Tavily Search, **UMLS/RxNorm API**, and **OpenFDA API**.

It simulates an interactive consultation where an AI assistant helps analyze patient data, suggests differential diagnoses, proposes management plans, performs **realistic drug interaction and allergy checks**, flags risks, incorporates clinical guideline information, and includes a **self-correction loop** based on interaction warnings.

**⚠️ Disclaimer: This is a proof-of-concept application intended for demonstration and educational purposes only. It is NOT a certified medical device and should NEVER be used for actual clinical decision-making.**

## ✨ Key Features (v2 Enhancements in Bold)

*   **Interactive Conversational Interface:** Uses LangGraph for multi-turn interactions, sequential processing, and dynamic responses.
*   **Structured Clinical Data Input:** Comprehensive sidebar form for patient intake.
*   **Advanced AI Analysis:** Leverages Llama 3 via Groq for clinical reasoning.
*   **Structured AI Output:** Provides analysis in JSON (Assessment, DDx, Risk, Plan, Rationale, Interaction Summary).
*   **Intelligent Tool Use:** Employs Langchain tools:
    *   `order_lab_test`: Simulates ordering labs.
    *   `prescribe_medication`: Simulates preparing prescriptions (requires prior interaction check).
    *   **`check_drug_interactions` (Enhanced):** Performs **realistic drug-drug and drug-allergy checks** using **UMLS/RxNorm API** for drug normalization and **OpenFDA API** for retrieving contraindications, warnings, and interaction data from drug labels.
    *   `flag_risk`: Allows AI to highlight critical risks.
    *   `tavily_search_results`: Searches for external info, prompted for **current clinical guidelines**.
*   **Enhanced Safety Protocols:**
    *   **Mandatory & Realistic Interaction Checks:** Enforces interaction checks before prescription; checks now use real-world APIs.
    *   **Self-Correction Loop:** Includes a dedicated step (`reflection_node`) in the LangGraph workflow where the agent specifically reviews significant interaction/allergy warnings and revises its therapeutic plan *before* presenting the final output.
    *   Red Flagging: Client-side initial checks and AI-driven risk flagging.
*   **Guideline Awareness:** AI prompted to search for and reference clinical guidelines.
*   **Modular Code Structure:** Separated UI (`app.py`) from core agent logic (`agent.py`) for better organization and maintainability.
*   **Robust Error Handling:** Implemented within LangGraph nodes and API helpers.

## 🚀 Technology Stack

*   **Python:** Core programming language.
*   **Streamlit:** Web application framework for the UI.
*   **Langchain & LangGraph:** Framework for building LLM applications, managing conversation state, and orchestrating tool use.
*   **Groq API:** Fast inference for Llama 3 LLM.
*   **Tavily Search API:** Web search for guidelines.
*   **UMLS API (via RxNav/RxNorm):** Drug name normalization (finding RxCUIs). Requires UMLS Metathesaurus License and API Key.
*   **OpenFDA API:** Retrieving drug label information (interactions, warnings, contraindications).
*   **Requests:** For making HTTP calls to external APIs.
*   **Pydantic:** Data validation in tool inputs.

## ⚙️ Setup and Installation

### Prerequisites

*   Python 3.8+
*   `pip` (Python package installer)
*   Git (for cloning the repository)
*   **UMLS Metathesaurus License:** You **must** obtain a free license from the [NLM UMLS Website](https://uts.nlm.nih.gov/uts/signup-login) to get a UMLS API Key.

### Installation Steps

1.  **Clone the Repository:**
    ```bash
    git clone <your-repository-url> # Replace with your repo URL
    cd <your-repository-directory>
    ```

2.  **Create and Activate a Virtual Environment (Recommended):**
    ```bash
    # macOS / Linux
    python3 -m venv venv
    source venv/bin/activate
    # Windows
    # python -m venv venv
    # .\venv\Scripts\activate
    ```

3.  **Create `requirements.txt`:**
    ```txt
    streamlit
    langchain
    langchain-groq
    langchain-community
    langgraph
    langchain-core
    pydantic>=1,<2 # Check compatibility
    groq
    tavily-python
    requests
    python-dotenv
    ```

4.  **Install Dependencies:**
    ```bash
    pip install -r requirements.txt
    ```

### API Keys

This application requires API keys for Groq, Tavily Search, and UMLS.

1.  **Groq API Key:** Obtain from [GroqCloud](https://console.groq.com/keys).
2.  **Tavily API Key:** Obtain from [Tavily AI](https://tavily.com/).
3.  **UMLS API Key:** Obtain after registering for a UMLS License via the [UTS NLM Website](https://uts.nlm.nih.gov/uts/profile).

**Set these keys as environment variables.**

*   **Using a `.env` file (Recommended for Local):** Create a `.env` file in the project root:
    ```
    GROQ_API_KEY="your_groq_api_key"
    TAVILY_API_KEY="your_tavily_api_key"
    UMLS_API_KEY="your_umls_api_key"
    ```
    *(Ensure `.env` is in your `.gitignore`)*

*   **Using System Environment Variables:** (Commands vary by OS)
    ```bash
    # Example for Linux/macOS
    export GROQ_API_KEY="your_groq_api_key"
    export TAVILY_API_KEY="your_tavily_api_key"
    export UMLS_API_KEY="your_umls_api_key"
    ```

*   **Using Hugging Face Space Secrets (if deploying there):**
    Go to your Space -> Settings -> Secrets and add secrets named `GROQ_API_KEY`, `TAVILY_API_KEY`, and `UMLS_API_KEY` with their respective values.

## ▶️ Running the Application

Ensure your virtual environment is activated and API keys are accessible (either via `.env` or system environment). Then run:

```bash
streamlit run app.py
Use code with caution.
Markdown
The application should open in your web browser.

📖 How to Use
Patient Intake: Fill out the patient information form in the sidebar.

Start Consultation: Click "Start/Update Consultation". Initial red flags (if any) will appear in the sidebar.

Interact with AI: Use the chat input. Start by asking the AI to analyze the patient (e.g., "Analyze this patient", "Proceed with assessment").

Review Responses: Observe the chat:

AI questions or conversational text.

Tool execution messages (🛠️).

Interaction Warnings/Alerts: Pay close attention to outputs from the check_drug_interactions tool.

Reflection Output: Notice when the AI explicitly mentions reviewing warnings and potentially revising its plan.

Final Structured JSON output with the comprehensive assessment.

Flagged risks shown as prominent errors (🚨).

⚠️ Important Disclaimer
SynapseAI is an experimental AI assistant demonstration.

NOT FOR CLINICAL USE: It is NOT a substitute for professional medical advice, diagnosis, or treatment.

VERIFY ALL OUTPUT: All information, suggestions, diagnoses, medication recommendations, dosages, interaction checks, and guideline interpretations MUST be independently verified using standard medical resources and clinical judgment.

API LIMITATIONS: Relies on external APIs (RxNorm, OpenFDA, Tavily) which have their own limitations, potential downtimes, and data coverage gaps. Interaction checking is complex and may not catch everything.

AI LIMITATIONS: LLMs can hallucinate, make errors, and may misinterpret API results or guidelines.

NO LIABILITY: The creators assume no responsibility for any decisions made based on this application's output.

Always rely on your professional training and judgment.

🔮 Future Enhancements
Full Memory Implementation: Add LLM-based summarization to manage long conversation context.

Deeper EMR/FHIR Simulation: Allow parsing more complex FHIR resources and generating draft resources based on the plan.

Refined Guideline Extraction: Improve the extraction and application of specific recommendations from searched guidelines.

User Feedback Integration: Allow explicit clinician overrides/edits to the plan.

More Granular Tools: Add calculators (clinical scores, dosages), tools for specific disease pathways, etc.

Asynchronous Operations: Improve UI responsiveness during long API calls (more complex in Streamlit).

📄 License
(Optional: Specify a license, e.g., MIT, Apache 2.0, or state if it's proprietary)

**Key Updates in this README:**

*   Reflects the **v2** status and highlights the integration of **UMLS/RxNorm and OpenFDA APIs** for realistic interaction checks.
*   Explicitly mentions the **self-correction loop (`reflection_node`)** as a key feature.
*   Includes instructions for obtaining a **UMLS License/API Key**.
*   Updates the **Technology Stack** list.
*   Emphasizes the reliance on **external APIs** and their limitations in the disclaimer.
*   Reflects the **modular file structure** (`app.py`, `agent.py`).
Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference