# JustLabs

> JustLabs is a direct-to-consumer lab testing platform that lets people order Quest Diagnostics blood tests without insurance. Patients pay transparent, upfront cash prices, receive a physician order automatically, and get their blood drawn at a local Quest Diagnostics patient service center. Results are delivered online in 1-2 business days.

## For AI Agents

JustLabs exposes several structured interfaces for programmatic / agent access. Prefer these over scraping HTML.

### MCP (Model Context Protocol)

- **MCP App (HTTP):** `https://mcp.justlabs.health/mcp` — StreamableHTTP transport, public, no authentication, read-only. Each tool also renders an interactive widget (`ui://justlabs/app.html`) in MCP Apps-capable clients such as Claude and ChatGPT.
- **Server Card:** [https://justlabs.health/.well-known/mcp/server-card.json](https://justlabs.health/.well-known/mcp/server-card.json) — machine-readable description of the server, its transport, and its tools
- **Developer page:** [https://justlabs.health/developers](https://justlabs.health/developers) — connection snippets, tools, endpoints and ground rules in one place
- **Legacy stdio package:** `npm install -g justlabs-mcp-server` — an older local tool set with different tool names; it does not compute all-in totals. Prefer the MCP App above.

### Available MCP tools

- `search-lab-tests` — search the catalog by test name, category, description, or biomarker (product terms only)
- `get-test-details` — full details for one test by id: price, biomarkers, preparation, turnaround
- `get-test-panels` — bundled panels, each compared with its tests bought separately; optional category filter
- `get-pricing` — the exact all-in price for test/panel ids (item prices + the single per-order fee = what checkout charges), with optional state availability

### Machine-readable endpoints

- **Full catalog (JSON):** [https://justlabs.health/api/tests](https://justlabs.health/api/tests) — returns `{ tests: LabTest[], panels: TestPanel[] }` with the complete current catalog. Use this for pricing, biomarker data, and test lookups rather than parsing product pages.
- **Minimal catalog for LLM grounding (JSON):** [https://justlabs.health/api/catalog](https://justlabs.health/api/catalog) — trimmed subset of `/api/tests` containing only `id`, `name`, `price`, `biomarkers`, `category`, `url`, `description` per test/panel. Prefer this when fetching at inference time to minimize tokens. Supports `?locale=es`. URLs returned include UTM attribution params — use them verbatim.
- **All-in price quote (JSON):** `https://justlabs.health/api/public/v1/quote?items=tsh,vitamin-d&state=CA` — the exact total for a basket, computed by the same code checkout charges with: each item's price, the subtotal, the single per-order fee and the total, in integer cents (USD), plus whether the order can be placed in `state` (optional) and a prefilled cart link. Item ids come from `/api/catalog`. Use this instead of adding the fee by hand. Unknown ids or a bad state return a 400 naming the problem.
- **State availability (JSON):** `https://justlabs.health/api/public/v1/availability?state=CA&item=tsh` — whether JustLabs accepts orders from a state (and, with `item`, whether that test or panel is offered there). Orders are not accepted from NY, NJ, RI or HI.
- **OpenAPI 3.1 spec for the quote and availability endpoints:** [https://justlabs.health/openapi-public.yaml](https://justlabs.health/openapi-public.yaml) — no authentication, read-only, no personal data, rate limited per IP.
- **OpenAPI 3.1 spec for /api/tests:** [https://justlabs.health/api/tests/openapi.json](https://justlabs.health/api/tests/openapi.json)
- **API catalog (RFC 9727 linkset):** [https://justlabs.health/.well-known/api-catalog](https://justlabs.health/.well-known/api-catalog) — machine-readable index of public APIs with links to their OpenAPI specs and documentation.
- **Agent Skills index:** [https://justlabs.health/.well-known/agent-skills/index.json](https://justlabs.health/.well-known/agent-skills/index.json) — per the Agent Skills Discovery RFC v0.2.0. Each MCP tool is also declared as a discrete skill with a SHA-256-addressed SKILL.md document, so clients can import a single skill without connecting the full MCP.
- **Partner API guide:** [https://justlabs.health/api-docs/guide.md](https://justlabs.health/api-docs/guide.md) — for approved business partners; requires an API key.
- **Partner API OpenAPI contract:** [https://justlabs.health/api-docs/openapi.yaml](https://justlabs.health/api-docs/openapi.yaml) — for approved business partners; requires an API key.

### Content negotiation

Pages on justlabs.health respond to `Accept: text/markdown` with a clean markdown version of the same URL. Useful when fetching content for retrieval or summarization — strips nav chrome, scripts, and CSS. Protected routes (dashboard, checkout, login, admin) always return HTML.

### robots.txt signals

The site declares `Content-Signal: search=yes, ai-input=yes, ai-train=no` per user-agent block. Grounding / retrieval / citation is welcome; training on the content is not.

### Disclaimers

JustLabs is a direct-to-consumer testing platform, not a diagnostic or treatment service. Tool output is informational. Any symptom → test mapping provided by tools (including `recommend-tests`) is educational and should not be treated as clinical advice. The `.well-known` card and `/api/tests` catalog are the canonical source of truth for what JustLabs currently offers — the llms.txt below lists representative entry points but may lag the live catalog.

## About JustLabs

JustLabs (justlabs.health) makes lab testing accessible, affordable, and convenient. Patients can order from 100+ individual lab tests and panels across 14 categories, including thyroid, hormones, metabolic, heart health, vitamins, autoimmune, fertility, diabetes, liver, kidney, inflammation, STI testing, men's health, and general health.

All blood draws are performed at Quest Diagnostics patient service centers — over 2,200 locations nationwide. Walk-ins are welcome at most locations; no appointment is needed.

JustLabs is not a membership or subscription service. There are no hidden fees, no recurring charges, and no insurance claims. Patients pay once and get their results.

## How It Works

1. Browse and order tests online at justlabs.health/tests
2. A licensed physician reviews and authorizes the lab order automatically
3. Visit any Quest Diagnostics patient service center for the blood draw
4. Receive results online, typically within 1-2 business days

## Pricing

All prices are displayed upfront with no surprise bills. Tests start at $5. One $18 lab & physician order fee (Quest blood draw + physician order) applies per order, charged once however many tests you add. No insurance is needed, and FSA/HSA cards are accepted. For an exact all-in total for any combination of tests, use the quote endpoint above (`/api/public/v1/quote?items=...`).

Representative test prices (catalogue id in brackets — pass it to the quote endpoint for an all-in total):
- TSH (Thyroid Stimulating Hormone): $9 [tsh]
- Hemoglobin A1c (HbA1c): $7 [hemoglobin-a1c]
- Lipid Panel (Standard): $8 [lipid-panel]
- Glucose, Fasting: $6 [glucose-fasting]
- Vitamin D, 25-Hydroxy: $25 [vitamin-d]
- Vitamin B12: $8 [vitamin-b12]
- Testosterone, Free & Total: $34 [testosterone-free-total]
- Complete Thyroid Panel (5 tests): $84 [panel-thyroid-complete]
- Advanced Heart Health Panel (5 tests): $81 [panel-heart-health]
- Comprehensive Wellness Panel (9 tests): $94 [panel-wellness-comprehensive]

Example all-in total: TSH + Vitamin D = $9 + $25 + the $18 order fee = $52 ([quote](https://justlabs.health/api/public/v1/quote?items=tsh,vitamin-d)).

## Lab Test Catalog

- [Browse All Tests](https://justlabs.health/tests): Full catalog with prices
- [How It Works](https://justlabs.health/how-it-works): Step-by-step ordering guide
- [Lab Test Pricing](https://justlabs.health/lab-test-pricing): Pricing and fee structure
- [Find a Lab](https://justlabs.health/find-lab): Quest Diagnostics location finder

## Test Categories

- [Thyroid Tests](https://justlabs.health/tests?category=thyroid): TSH, Free T4, Free T3, thyroid antibodies, thyroid panels
- [Hormone Tests](https://justlabs.health/tests?category=hormones): Testosterone, estradiol, cortisol, DHEA, hormone panels
- [Metabolic Tests](https://justlabs.health/tests?category=metabolic): CMP, BMP, glucose, electrolytes, metabolic panels
- [Heart Health Tests](https://justlabs.health/tests?category=cardiovascular): Lipid panel, ApoB, Lp(a), CRP, heart health panels
- [Vitamin & Mineral Tests](https://justlabs.health/tests?category=vitamins): Vitamin D, B12, folate, iron, ferritin, magnesium
- [Diabetes Tests](https://justlabs.health/tests?category=diabetes): HbA1c, fasting glucose, insulin, diabetes panels
- [Liver Tests](https://justlabs.health/tests?category=liver): ALT, AST, bilirubin, liver function panels
- [Kidney Tests](https://justlabs.health/tests?category=kidney): Creatinine, BUN, GFR, kidney panels
- [Fertility Tests](https://justlabs.health/tests?category=fertility): AMH, FSH, LH, fertility panels
- [STI Tests](https://justlabs.health/tests?category=sti): HIV, hepatitis, syphilis, STI panels
- [Autoimmune Tests](https://justlabs.health/tests?category=autoimmune): ANA, CRP, ESR, autoimmune panels
- [Men's Health Tests](https://justlabs.health/tests?category=mens-health): PSA, testosterone, men's wellness panels

## Test Pricing Pages

- [TSH Test Cost — $9](https://justlabs.health/pricing/tsh-blood-test-cost)
- [Lipid Panel Cost — $8](https://justlabs.health/pricing/lipid-panel-cost)
- [Thyroid Panel Cost](https://justlabs.health/pricing/thyroid-panel-cost)
- [Vitamin D Test Cost](https://justlabs.health/pricing/vitamin-d-test-cost)
- [Testosterone Test Cost](https://justlabs.health/pricing/testosterone-test-cost)
- [A1c Test Cost — $7](https://justlabs.health/pricing/a1c-test-cost)
- [CMP Test Cost](https://justlabs.health/pricing/cmp-test-cost)
- [Estradiol Test Cost](https://justlabs.health/pricing/estradiol-test-cost)

## Labs by Symptom

Find the right blood tests based on your symptoms:

- [Blood Tests for Fatigue](https://justlabs.health/symptoms/fatigue): TSH, ferritin, vitamin D, CBC
- [Blood Tests for Hair Loss](https://justlabs.health/symptoms/hair-loss): Thyroid, iron, hormones
- [Blood Tests for Brain Fog](https://justlabs.health/symptoms/brain-fog): TSH, B12, glucose, CMP
- [Blood Tests for Weight Gain](https://justlabs.health/symptoms/weight-gain): Thyroid, metabolic, hormones
- [Blood Tests for Anxiety](https://justlabs.health/symptoms/anxiety): Thyroid, glucose, B12, magnesium
- [Blood Tests for Depression](https://justlabs.health/symptoms/depression): TSH, B12, vitamin D, iron
- [Blood Tests for Cold Intolerance](https://justlabs.health/symptoms/cold-intolerance): Thyroid, iron, vitamin D
- [Blood Tests for Irregular Periods](https://justlabs.health/symptoms/irregular-periods): Hormones, thyroid
- [Blood Tests for Low Energy](https://justlabs.health/symptoms/low-energy): TSH, iron, B12, vitamin D
- [Blood Tests for Insomnia](https://justlabs.health/symptoms/insomnia): Thyroid, vitamin D, magnesium
- [Blood Tests for Joint Pain](https://justlabs.health/symptoms/joint-pain): Inflammation, autoimmune markers
- [Blood Tests for Muscle Weakness](https://justlabs.health/symptoms/muscle-weakness): Vitamin D, electrolytes, TSH
- [Blood Tests for Mood Swings](https://justlabs.health/symptoms/mood-swings): Hormones, thyroid, glucose
- [Blood Tests for Bloating](https://justlabs.health/symptoms/bloating): Thyroid, B12, celiac markers
- [Blood Tests for Night Sweats](https://justlabs.health/symptoms/night-sweats): Hormones, thyroid, CBC
- [Blood Tests for Low Libido](https://justlabs.health/symptoms/low-libido): Testosterone, thyroid, prolactin
- [Blood Tests for Frequent Urination](https://justlabs.health/symptoms/frequent-urination): Glucose, A1c, urinalysis
- [Blood Tests for Dry Skin](https://justlabs.health/symptoms/dry-skin): Thyroid, vitamin A, vitamin D
- [Blood Tests for Brittle Nails](https://justlabs.health/symptoms/brittle-nails): Iron, thyroid, B12
- [Blood Tests for Poor Concentration](https://justlabs.health/symptoms/poor-concentration): TSH, B12, vitamin D

## Labs by Condition

Recommended lab tests for specific health conditions:

- [Lab Tests for Hypothyroidism](https://justlabs.health/labs-for/hypothyroidism)
- [Lab Tests for Hashimoto's Thyroiditis](https://justlabs.health/labs-for/hashimotos-thyroiditis)
- [Lab Tests for Hyperthyroidism](https://justlabs.health/labs-for/hyperthyroidism)
- [Lab Tests for Graves' Disease](https://justlabs.health/labs-for/graves-disease)
- [Lab Tests for PCOS](https://justlabs.health/labs-for/pcos)
- [Lab Tests for Perimenopause](https://justlabs.health/labs-for/perimenopause)
- [Lab Tests for Low Testosterone](https://justlabs.health/labs-for/low-testosterone)
- [Lab Tests for Anemia](https://justlabs.health/labs-for/anemia)
- [Lab Tests for Iron Deficiency](https://justlabs.health/labs-for/iron-deficiency)
- [Lab Tests for Vitamin D Deficiency](https://justlabs.health/labs-for/vitamin-d-deficiency)
- [Lab Tests for Type 2 Diabetes](https://justlabs.health/labs-for/type-2-diabetes)
- [Lab Tests for Insulin Resistance](https://justlabs.health/labs-for/insulin-resistance)
- [Lab Tests for Adrenal Fatigue](https://justlabs.health/labs-for/adrenal-fatigue)
- [Lab Tests for Celiac Disease](https://justlabs.health/labs-for/celiac-disease)
- [Lab Tests for Rheumatoid Arthritis](https://justlabs.health/labs-for/rheumatoid-arthritis)
- [Lab Tests for Lupus](https://justlabs.health/labs-for/lupus)
- [Lab Tests for Chronic Kidney Disease](https://justlabs.health/labs-for/chronic-kidney-disease)
- [Lab Tests for Fatty Liver Disease](https://justlabs.health/labs-for/fatty-liver-disease)
- [Lab Tests for Heart Disease](https://justlabs.health/labs-for/heart-disease)
- [Lab Tests for Metabolic Syndrome](https://justlabs.health/labs-for/metabolic-syndrome)

## Lab Result Interpretation

Understand what your lab results mean:

- [High TSH](https://justlabs.health/labs/high-tsh): Causes, symptoms, and next steps
- [Low TSH](https://justlabs.health/labs/low-tsh): Causes, symptoms, and next steps
- [High Ferritin](https://justlabs.health/labs/high-ferritin): What elevated ferritin means
- [Low Ferritin](https://justlabs.health/labs/low-ferritin): What low ferritin means
- [Low Vitamin D](https://justlabs.health/labs/low-vitamin-d): Causes and treatment
- [High Cortisol](https://justlabs.health/labs/high-cortisol): What elevated cortisol means
- [Low Cortisol](https://justlabs.health/labs/low-cortisol): What low cortisol means
- [High A1c](https://justlabs.health/labs/high-a1c): Prediabetes and diabetes thresholds
- [Low B12](https://justlabs.health/labs/low-b12): Causes and symptoms
- [High Cholesterol](https://justlabs.health/labs/high-cholesterol): Cardiovascular risk
- [Low Testosterone](https://justlabs.health/labs/low-testosterone): Causes, symptoms, treatment
- [High Estradiol](https://justlabs.health/labs/high-estradiol): What elevated estradiol means
- [Low Progesterone](https://justlabs.health/labs/low-progesterone): Causes and implications
- [High Creatinine](https://justlabs.health/labs/high-creatinine): Kidney function assessment
- [Low Iron](https://justlabs.health/labs/low-iron): Iron deficiency causes
- [High TPO Antibodies](https://justlabs.health/labs/high-tpo-antibodies): Autoimmune thyroid disease

## Comparisons

- [JustLabs vs LabCorp](https://justlabs.health/compare/justlabs-vs-labcorp): Price and feature comparison
- [JustLabs vs Quest Direct](https://justlabs.health/compare/justlabs-vs-quest-direct): Same labs, lower prices
- [JustLabs vs Everlywell](https://justlabs.health/compare/justlabs-vs-everlywell): Lab vs at-home testing
- [JustLabs vs LetsGetChecked](https://justlabs.health/compare/justlabs-vs-letsgetchecked): Feature comparison
- [Order Lab Tests Without a Doctor](https://justlabs.health/compare/order-lab-tests-without-doctor): How direct-access testing works
- [Direct-Access Lab Testing by State](https://justlabs.health/compare/direct-access-lab-testing-by-state): State regulations
- [Using FSA/HSA for Lab Tests](https://justlabs.health/compare/fsa-hsa-for-lab-tests): Pre-tax health funds guide

## Educational Content

- [Order Labs Without a Doctor](https://justlabs.health/order-labs-without-doctor): How direct-access testing works
- [Labs Without Insurance](https://justlabs.health/labs-without-insurance): Self-pay lab testing guide
- [Where to Get Lab Tests](https://justlabs.health/where-to-get-lab-tests): Lab locations and what to expect
- [FSA/HSA Eligible Tests](https://justlabs.health/fsa-hsa-eligible-tests): Using pre-tax health funds
- [Understanding Lab Results](https://justlabs.health/understanding-lab-results): How to read your results
- [AI Test Recommendation Quiz](https://justlabs.health/questionnaire): Get personalized test recommendations
- [Analyze Your Lab Results with AI](https://justlabs.health/analyze): Copy-paste prompt template for interpreting Quest Diagnostics results in Claude, ChatGPT, or Perplexity. The prompt instructs the AI to fetch the minimal catalog above and ground follow-up test recommendations in real JustLabs SKUs.
- [FAQ](https://justlabs.health/faq): Frequently asked questions

## Blog

- [Blog Home](https://justlabs.health/blog): 60+ health and lab testing articles
- Topics: thyroid health, hormone testing, vitamin deficiency, metabolic health, self-pay lab testing, lab test guides, blood test interpretation

## Contact

- Website: https://justlabs.health
- Email: support@justlabs.health
- Contact page: https://justlabs.health/contact

## Legal

- [Privacy Policy](https://justlabs.health/privacy)
- [Terms of Service](https://justlabs.health/terms)
- [HIPAA Notice](https://justlabs.health/hipaa)