MCP server

TestWell Lab Tests Official

com.test-well/testwell

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

Cash-pay lab tests: catalog search, all-in quotes by state, draw sites by ZIP, reviewed ranges.

Working at last checkVerified publisher: test-well.comAbout 4,584 tokens per request once connected18 tools

Website

https://www.test-well.com/mcp

At a glance

Type: MCP server
Publisher: test-well.com (verified by the MCP Registry)
Status: Working at last check
Tools: 18
Token cost: About 4,584 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 25 Oct 2026, 20:29 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http testwell https://www.test-well.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.testwell]
url = "https://www.test-well.com/mcp"

Gemini CLI

{"mcpServers":{"testwell":{"httpUrl":"https://www.test-well.com/mcp"}}}

Cursor

{"mcpServers":{"testwell":{"url":"https://www.test-well.com/mcp"}}}

VS Code

{"servers":{"testwell":{"type":"http","url":"https://www.test-well.com/mcp"}}}

Antigravity

agy mcp add testwell https://www.test-well.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"testwell","server_url":"https://www.test-well.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"testwell","server_url":"https://www.test-well.com/mcp"}

Tools

calculate_free_testosterone ~222 tokens
Calculate free and bioavailable testosterone from total testosterone, SHBG and albumin using the Vermeulen (1999) mass-action equation — the method behind lab-reported 'calculated free testosterone'. Educational; not a diagnosis.
cancel_checkout Moves money · ~111 tokens
Cancel an open (unpaid) checkout session. Paid sessions cannot be canceled here — the patient's complete-details email explains refunds.
compare_prices ~219 tokens
For one blood test, the all-in single-test price (sticker + per-order fees) at TestWell and at every tracked direct-to-consumer provider with a verified equivalent — JustLabs, Quest, Labcorp OnDemand, Ulta Lab Tests, Walk-In Lab, HealthLabs and more — each with the date it was verified, plus typical
compare_provider ~185 tokens
Honest side-by-side of TestWell and another direct-to-consumer lab service (Quest Direct, Labcorp OnDemand, Function Health, JustLabs, Ulta Lab Tests, …): pricing model, per-order fees, labs, turnaround, where each wins, spot prices on common tests as sticker AND all-in, with verification dates and
complete_checkout Moves money · ~533 tokens
Charge the payment credential the platform obtained for a session that is ready_for_payment and create the order. Input follows the ChatGPT payment-sheet contract: checkout_session_id, buyer, payment_data { token, provider: 'stripe', billing_address }. The token is a Stripe shared payment token (spt
convert_units ~219 tokens
Convert a lab value between US conventional and SI units for 30 common analytes (glucose, cholesterol, testosterone, vitamin D, …) using published factors; hemoglobin A1c uses the NGSP↔IFCC master equation and also returns estimated average glucose.
create_checkout Moves money · ~398 tokens
Start a TestWell order for the user: tests/panels, the US state where they will visit the lab (required for pricing and lab routing), and the buyer's name, email and phone. Returns priced line items in cents, the single $6 lab fee, the total, any blocking messages, and pay_online_url — a prefilled c
find_draw_sites ~285 tokens
Find Quest Diagnostics, Labcorp and BioReference patient service centers near a US ZIP code, with address, distance, phone and hours. Walk-ins are accepted at most sites; the requisition arrives by email after physician authorization. Sites in the 48 tracked metros include pageUrl — the site's own p
get_checkout ~101 tokens
Current state of a checkout session (status, line items, totals, messages, order once paid). Read-only.
get_guide ~190 tokens
Return one of TestWell's educational pages as Markdown: guides (/guides/<slug>), condition workups (/conditions/<slug>), biomarker pages (/biomarkers/<slug>), state pages (/lab-locations/<slug>) or comparisons (/compare/<slug>). Call with no path to list the available guides and conditions.
get_test ~256 tokens
Full public detail for one TestWell test or panel by slug or id: description, biomarkers, CPT, per-lab prices, labs, fasting/prep, turnaround, included tests (panels), FAQ, related conditions, order URL and a Markdown page URL. Tests also carry labPages — per-lab pages (/tests/<slug>/quest, /tests/<
interpret_results ~330 tokens
Flag each pasted lab value as low / normal / high against TestWell's physician-reviewed reference catalog (130+ markers; sex- and age-specific bands where they exist), with the reviewed 'what high/low suggests' copy, retest guidance, cited sources and links to the marker's page and, where one exists
list_panels ~178 tokens
List TestWell's bundled panels (multi-test packages priced below the sum of their tests), optionally filtered by category or maximum price. Sorted by price.
lookup_reference_range ~218 tokens
Physician-reviewed reference range for a blood test marker (130+ markers), filtered by sex and age when they matter, with what high and low values suggest, retest cadence, how to get tested, cited sources and the review date. Educational; the user's own report range takes precedence.
quote_order ~269 tokens
Price a set of tests/panels exactly as TestWell's checkout would: per-lab prices for the user's state (New York and New Jersey route to BioReference; Rhode Island is not served), the single $6 lab processing fee, the total, items that can't be ordered and why, and a prefilled cart URL. Use this befo
recommend_tests ~248 tokens
Suggest TestWell panels and tests for stated health goals (e.g. 'annual checkup', 'heart health', 'TRT monitoring') and/or symptoms (e.g. 'fatigue', 'hair loss'). Prefers a curated pre-built panel when one fits; otherwise assembles individual tests within a budget. Educational matching, not a diagno
search_tests ~335 tokens
Search TestWell's public catalog of cash-pay lab tests and panels by keyword, biomarker, CPT code, or category. Returns name, slug, per-lab prices, sample, fasting, turnaround and order URL. Prices are stickers; every order adds one $6 lab processing fee (see quote_order for all-in totals).
update_checkout Moves money · ~287 tokens
Change items, state or buyer details on an open checkout session and get it re-priced. Returns the same session object as create_checkout.

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