# JustLabs Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## JustLabs

Shop cash-price Quest blood tests, compare all-in prices and find draw sites near you.

- Record: https://musedirectory.ai/connector/justlabs
- Category: Health
- Developer: JustLabs (https://justlabs.health/developers)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 201ms, checked 2026-11-13T15:41:18Z
- Endpoint: https://mcp.justlabs.health/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-11-13T15:41:18Z)
- Source: Found in the official MCP Registry (health.justlabs/justlabs) https://registry.modelcontextprotocol.io/v0/servers?search=health.justlabs%2Fjustlabs

Connects to the JustLabs catalog of Quest Diagnostics blood tests and panels. Muse can search tests by name, condition or biomarker, get all-in pricing with the per-order fee, compare prices against other lab providers, find nearby draw sites by ZIP code, look up reference ranges and read preparation guides.

Example request: "Find a Quest blood draw site near 90210 and tell me the all-in price for a thyroid panel."

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use JustLabs to help me. It is a free service with an MCP server at https://mcp.justlabs.health/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- search-lab-tests: Search the JustLabs catalog of tests AND panels by test name, condition (e.g. menopause, gout, anemia), category, or biomarker. Use only product terms; do not include names, contact details, symptoms, or personal lab results. Prices are per test; one $18 lab & physician order fee
- get-test-details: Get full details for a specific lab test or panel by its ID. Returns pricing, biomarkers (or included tests for a panel), preparation instructions, and turnaround time.
- get-test-panels: Get available test panels and compare panel base prices with their included tests bought separately. One $18 lab & physician order fee applies once per order.
- get-pricing: Get the exact all-in price for one or more JustLabs test or panel IDs: each item's price, the single $18 per-order lab & physician fee (charged once per order), and the total — the same amount checkout charges. Pass an optional 2-letter US state to check whether the order can be 
- find-draw-sites: Find Quest Diagnostics patient service centers (blood-draw sites) near a 5-digit US ZIP code where a JustLabs order can be collected: site code, address, distance, hours, walk-ins and a booking link, optionally with the next open appointment times. Send only a ZIP code — never a 
- lookup-reference-range: Typical reference ranges for a lab marker (e.g. TSH, ferritin, LDL cholesterol, vitamin D), optionally by sex and age, with unit, source and the JustLabs test that measures it. Educational only: ranges vary by lab and method, and the range printed on the patient's own lab report 
- compare-prices: Compare the all-in price of one JustLabs test or panel (catalogue id such as tsh, or a test name) with published prices from other direct-to-consumer lab services: each one's price, per-order fees and all-in total, whether it covers the same tests, the source link and the date ch
- compare-provider: How JustLabs compares with another lab-testing provider (e.g. everlywell, testwell, quest, labcorp): a short verdict, side-by-side facts with sources, where each one is the better choice, FAQs and a link to the full comparison page. Product terms only.
- recommend-tests: Suggest JustLabs panels and tests for health goals (e.g. energy, heart health, fertility) and/or symptoms (e.g. fatigue, hair loss), each with a one-line reason, price, all-in price and link, plus the JustLabs guide pages the suggestion is based on. General education, not a diagn
- get-guide: Read a public JustLabs guide page as Markdown, e.g. /blood-test-preparation, /labs-for/hypothyroidism, /tests/tsh or /compare/everlywell. Pass a justlabs.health path starting with /, not a full URL. Account, checkout, results, admin and API paths are refused. Educational content;

Screening checks:
- MCP handshake: pass (Answered in 201ms)
- Domain against threat feeds (Cloudflare security DNS): pass (mcp.justlabs.health, justlabs.health not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (10 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (Domain registered 337 days ago)
- AI review of purpose and tool behavior: pass (No concerns)