# Test Well Testwell MCP server

Source: https://glimind.com/server/mcp-registry%2Fcom.test-well%2Ftestwell
Registry id: `mcp-registry/com.test-well/testwell`
Status: live (checked 2026-10-27T04:15:18.202Z)

## Verdict

Test Well Testwell MCP server answered 100% of Glimind's liveness checks over 30 days, better than 42% of MCP servers, with 1138 ms median handshake and 0 outages in 90 days. Its agent-readiness grade is A (93/100) across 18 tools, costing an agent about 4,446 tokens to load. Checked every few minutes; no tool is ever called.

## Measurements (30 days)

| Metric | Value | Better than |
|---|---|---|
| Uptime, 30 days | 100% | 42% of MCP servers |
| Median handshake latency | 1138 ms | 15% of MCP servers |
| p95 handshake latency | 3135 ms | — |
| Checks in 30 days | 4,983 | — |
| Outages, 90 days | 0 | — |
| Median recovery | — | — |
| Agent-readiness score | 93/100 (A) | 76% of MCP servers |
| Tools | 18 | — |
| Tool-list size for an agent | ~4,446 tokens | 40% of MCP servers |
| Days observed | 29 | — |

## Install

```json
{
  "mcpServers": {
    "test-well-testwell-mcp-server": {
      "type": "http",
      "url": "https://www.test-well.com/mcp"
    }
  }
}
```

Claude Code:

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

## Tools (18)

- `calculate_free_testosterone`: Calculate free and bioavailable testosterone from total testosterone, SHBG and albumin using the Vermeulen (1999) mass-action equation — the method behind lab-r
- `cancel_checkout`: Cancel an open (unpaid) checkout session. Paid sessions cannot be canceled here — the patient's complete-details email explains refunds.
- `compare_prices`: 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 equival
- `compare_provider`: Honest side-by-side of TestWell and another direct-to-consumer lab service (Quest Direct, Labcorp OnDemand, Function Health, JustLabs, Ulta Lab Tests, …): prici
- `complete_checkout`: 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 contra
- `convert_units`: Convert a lab value between US conventional and SI units for 30 common analytes (glucose, cholesterol, testosterone, vitamin D, …) using published factors; hemo
- `create_checkout`: 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, emai
- `find_draw_sites`: 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 m
- `get_checkout`: Current state of a checkout session (status, line items, totals, messages, order once paid). Read-only.
- `get_guide`: Return one of TestWell's educational pages as Markdown: guides (/guides/<slug>), condition workups (/conditions/<slug>), biomarker pages (/biomarkers/<slug>), s
- `get_test`: 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 (p
- `interpret_results`: 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 
- `list_panels`: 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`: 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, rete
- `quote_order`: 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 Isla
- `recommend_tests`: 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'
- `search_tests`: 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, fast
- `update_checkout`: Change items, state or buyer details on an open checkout session and get it re-priced. Returns the same session object as create_checkout.

Measured by Glimind (https://glimind.com): MCP handshake + tool list only, no tool is ever called. CC BY 4.0.