Quest Diagnostics Integration and API: How to Connect Your EHR for Lab Orders and Results (2026)
CTO & Co-Founder
CTO & Co-Founder at Nirmitee.io. Architects healthcare integrations across FHIR, SMART on FHIR, ABDM and NHCX, writing from production experience taking hospital software from sandbox to go-live.
Updated November 2026
Short answer. Quest Diagnostics integration connects your EHR or health app to Quest so that lab orders go to Quest electronically and results come back into the patient chart. Quest does not offer a public, self-serve developer portal. You request an interface through Quest's GetMyInterface site. Quest's connectivity team approves and configures it. You then build to the specification Quest gives you, usually HL7 v2 messages or Quest's newer API. Plan for Quest's own setup time on top of your build.
This guide is for practices, health systems, EHR vendors and digital health companies that send work to Quest. It explains what Quest offers and what it does not. It lists what you need before you start, the steps to go-live, and a plan that keeps results from being lost.
Key takeaways
- Start with the route. A bidirectional interface sends orders and receives results. A results-only interface receives results for orders placed another way.
- Quest owns the approval. You request every interface through GetMyInterface.com, and Quest configures it. Your timeline depends on Quest as well as on your team.
- The data is harder than the connection. Test codes, order questions and account numbers can differ by Quest region and by location.
- Each result must match the right order and patient. Plan for partial, corrected and unsolicited results.
- Prove it at one location first, then roll out location by location.
What is Quest Diagnostics integration?
Quest Diagnostics integration is a lab integration, an electronic link between a care setting's software and Quest's laboratory systems. It covers two flows:
- Orders out. A clinician picks tests in the EHR. The EHR sends the order to Quest with the patient, insurance, diagnosis codes and any answers Quest needs to run the test. The EHR prints a requisition and specimen labels, or Quest returns them.
- Results in. Quest sends results back as structured values with reference ranges and flags, often with a PDF report. The EHR matches each result to its order and patient and puts it in the clinician's inbox.
An interface that does both is called bidirectional. An interface that only receives results is called results-only. Many practices start with results-only because it removes manual result entry quickly and needs fewer Quest setup steps.
Does Quest Diagnostics have an API?
Yes, but it is not a public, self-serve API. Quest offers three ways in for software, and each one starts with a request to Quest:
| Way in | What it is for | What we know |
|---|---|---|
| Quest's Hub API | Lab orders and results for EHRs and health apps | Orders go in as JSON ServiceRequest resources. Results come back as FHIR Observation resources. Quest issues a client ID and secret after registration. This comes from an integrator's write-up, not from a public Quest document |
| Quanum EHR FHIR API | Reading data from Quest's own Quanum EHR | FHIR R4, JSON over HTTPS, signed in with SMART on FHIR. Quest's reference guides from 2021 and 2022 describe it, and say Quest can change it at any time |
| HL7 v2 interface | Orders and results between your EHR and Quest | The most common route. Quest's connectivity team gives you the specification |
If you searched for a Quest Diagnostics API key and a sandbox, there is none to download. Start at GetMyInterface.com, as described below.
Why integrate with Quest
- No double entry. Without an interface, staff type orders into a Quest portal and then scan or retype results into the chart. Each step is a chance to pick the wrong patient or miss an abnormal value.
- Fewer rejected specimens. An electronic order carries the required answers and diagnosis codes, so fewer specimens are held for missing information.
- Medicare rules at order time. An Advance Beneficiary Notice (ABN) is a form a Medicare patient signs for a test Medicare is not expected to pay for. If a diagnosis does not support the test, Quest's ordering tools ask for an ABN. They also ask when a frequency limit applies. An integrated order can run the same check before the patient leaves.
- Results where clinicians work. Results land in the EHR inbox with abnormal flags, instead of in a separate portal someone has to check.
- Data you can use. Structured results, coded with LOINC (the standard codes for lab tests), feed trend charts, quality measures, care gaps and analytics.
What Quest makes available
| What | What it does | How you get it | How sure we are |
|---|---|---|---|
| HL7 v2 orders and results interface | Orders (ORM or OML messages) go to Quest. results (ORU messages) come back. patient details can travel in ADT messages | Request through GetMyInterface.com. Quest's connectivity team supplies the specification and test plan | Described in implementation case studies and EHR vendor guides |
| Quest's Hub API | Posts orders as JSON ServiceRequest resources and returns an order number and requisition PDF. returns results as FHIR Observation resources. separate test and production URLs | Vendor registration, then a client ID and secret from Quest, then account activation on a "turn-up" call | Described by an EHR integrator's write-up and the OpenEMR community module, not by a public Quest document |
| Quanum EHR FHIR API | FHIR R4 REST API, JSON over HTTPS, secured with SMART on FHIR (OAuth 2.0) | Access request form sent to Quest. Quest issues the client ID | Quest's own reference guides, dated November 2021 and November 2022. They say Quest can change the API at any time |
| Quanum eLabs and Lab Services Manager | Web tools for placing orders and viewing results without an EHR interface. Quest's sign-in page says eLabs was formerly called Care360. Quest's help desk can enable HL7 download in some cases | Through your Quest account | Quest help pages and EHR vendor guides |
| GetMyInterface.com | Quest's request site for EHR interfaces, with separate paths for physicians, EMR vendors and Quest employees | Public site | Quest's own site |
| Connectivity Help Desk | Support for EHR interface problems | 1-800-697-9302, listed on Quest's "Request EHR interface support" page | Quest's own site, checked 3 November 2026 |
Many EHRs already have a Quest interface built. If your EHR vendor is listed with Quest, you usually only request activation for your practice. If you build your own product, you are the EMR vendor in Quest's process.
What is not available
Knowing the gaps early saves weeks.
- No public developer portal or open sandbox. We found no self-serve Quest developer portal. Access starts with a request and an approval.
- No single public interface specification. Quest supplies the specification for your interface. Public copies online are old or written by third parties.
- No published go-live timeline. One EHR vendor tells customers that some labs take four weeks or more to complete setup. It says the timing is outside its control. Treat any date as an estimate until Quest confirms it.
- No one national test list. Ask-at-order-entry (AOE) questions are extra answers Quest needs for some tests. Test codes and AOE questions can differ by Quest business unit and location. One integration team reported that lookup values differed across Quest business units.
- No published interface fees. Ask your Quest representative and your EHR vendor what each charges before you plan the budget.
- No guarantee that one setup covers every location. Each ordering location usually has its own Quest client account number.
What you need before you start
| Item | Why it matters |
|---|---|
| A Quest client account number for each ordering location | Quest asks for it on the interface request, and orders are billed and routed by account |
| Your EHR vendor and product name as Quest knows them | The request form asks for both. vendors list a specific product name |
| Practice details: address, NPI of ordering providers, contacts | Quest provisions the account against them. results are often matched to orders by the ordering provider's NPI |
| A business associate agreement (BAA) | The interface carries protected health information |
| A connection method | HTTPS for the API, or a VPN or SFTP link for HL7 files, as Quest specifies |
| An interface engine or integration layer | Something to send, receive, retry, log and alert, such as Mirth Connect, Open Integration Engine or your own service |
| A test compendium load | The list of orderable tests, codes and AOE questions for your Quest region, kept up to date |
| A plan for requisitions and labels | Who prints the requisition and specimen labels, and whether Quest returns a PDF |
| An ABN workflow for Medicare patients | The patient signs any needed ABN before the draw, and the order is not delayed |
| Owners on both sides | A practice lead, an engineer, and a named Quest contact for testing and go-live |
How to integrate with Quest, step by step
- Pick the route. Choose results-only or bidirectional. Then choose HL7 v2 or the API, based on what your EHR supports and what Quest offers in your region.
- Submit the request. Go to GetMyInterface.com. Practices use the physician path with their Quest account number and EHR vendor name. Software companies use the EMR vendor path.
- Get the specification and accounts. Quest's connectivity team confirms the route. It sends the interface specification and the test plan. For the API, it also sends credentials for the test environment.
- Load the compendium. Load the tests, codes and AOE questions for each ordering location. Plan a regular refresh, because Quest changes them.
- Build the order. Send the patient, insurance, ordering provider NPI, ICD-10 diagnosis codes, Quest test codes, AOE answers and collection details. Handle the ABN check for Medicare patients.
- Build the results path. Parse each result and match it to its order and patient. Store the values with LOINC codes, units, reference ranges and flags. Attach the PDF, and route abnormal results to the right inbox.
- Test with Quest. Run Quest's test cases. Include partial results, corrected results, cancelled tests and results for orders placed on paper.
- Go live at one location. Schedule the turn-up with Quest, watch the first days closely, then add locations one at a time.
- Monitor. Alert on failed messages, unmatched results and slow deliveries from the first day.
This is what one order looks like from the clinician's click to the result in the chart:
What an order and a result carry
| Part | Order to Quest | Result from Quest |
|---|---|---|
| Patient | Name, date of birth, sex, address, your patient ID | The same identifiers, echoed back for matching |
| Insurance | Payer, member ID, subscriber, or client bill or patient bill | Not usually returned |
| Provider | Ordering provider name and NPI, account number | Ordering provider, used to route the result |
| Clinical | ICD-10 diagnosis codes, AOE answers, fasting status, collection date and time | Values, units, reference ranges, abnormal flags, comments |
| Tests | Quest test codes from the compendium | Quest codes and, where provided, LOINC codes |
| Status | New order or cancel | Preliminary, final or corrected |
| Documents | Requisition and labels, printed or returned | PDF report, where provided |
What usually goes wrong
| Problem | What causes it | How to prevent it |
|---|---|---|
| Specimen held at the lab | Missing AOE answer or diagnosis code | Make required AOE questions and diagnosis codes mandatory in the order screen |
| Order sent to the wrong account | A clinician works at two locations | Pick the account from the location of the visit, not the user |
| Result attached to no order | Order placed on paper or in Quest's portal | Keep an unmatched-results queue with an owner who reviews it daily |
| Result attached to the wrong patient | Matching on name alone | Match on order number first, then patient identifiers and ordering provider |
| Corrected result overwrites history | Updates replace the old value | Keep each version and mark the corrected one clearly |
| Panel looks incomplete | One panel's results arrive in several messages | Show results as preliminary until Quest sends the final status |
| Test codes stop working | Quest updated the compendium | Refresh the compendium on a schedule and alert on rejected codes |
| Interface silently stops | Expired certificate, password or token | During business hours, alert if no result arrives for a set time |
A plan for success
Go-live is the start, not the end. This plan keeps the first location safe and makes the rest repeatable.
Phase 1: prove the results path. If Quest allows it, start with results-only at one location. Measure how many results match an order automatically and how many land in the unmatched queue. Fix matching before you add orders.
Phase 2: turn on orders. Add electronic orders at the same location. Watch for held specimens and rejected codes in the first two weeks, and fix the order screen, not the staff.
Phase 3: roll out. Add one location at a time, each with its own account number and compendium check. Keep a short runbook: who to call at Quest, how to replay a failed message, and how to refresh the compendium.
What to measure every week:
- Share of results matched to an order without manual work
- Size and age of the unmatched-results queue
- Time from a final result at Quest to the result in the clinician's inbox
- Orders rejected or specimens held, and why
- Failed or retried messages
Who owns what: a practice lead owns the order screen and the unmatched queue. An engineer owns the interface, alerts and compendium refresh. Quest's connectivity team owns the Quest side, and your representative owns account questions.
Quest and Epic: what the 2025 collaboration means
On September 23, 2025, Quest announced a collaboration with Epic. Quest will deploy Epic's diagnostics software across its network, including Aura (Epic's lab data exchange), Beaker Laboratory, Care Everywhere, MyChart and Resolute billing. Quest describes it as a multi-year, phased project, and says the system is designed to help customers whatever EHR they use.
What it means for your integration today is not yet public. The announcement does not describe new ordering routes for other EHRs. Our advice: build to the interface Quest gives you now, and keep your lab layer separate from your EHR code. Ask your Quest contact whether the Epic rollout changes your test codes, route or timeline. If you use Epic yourself, ask your Epic team about Aura as well.
Quest and Labcorp: how they compare
| Quest Diagnostics | Labcorp | |
|---|---|---|
| How you start | GetMyInterface.com request, approved by Quest | Request through Labcorp's connectivity team for the product you need |
| Clinical orders and results | HL7 v2 interfaces. Quest's newer API for some EHRs | HL7 interfaces. Labcorp Link. Epic Aura for Epic customers |
| FHIR | Quanum EHR FHIR API and FHIR Observation results in the Hub API | See our Labcorp guide |
| Public developer portal | Not found | Not found for clinical interfaces |
If you send work to both labs, build one lab layer in your product and add each lab as a connection to it. Our Labcorp API and integration guide covers Labcorp's routes in detail, and our lab integration guide covers lab integration in general.
Security and compliance
- BAA. Sign a business associate agreement with every party that handles the data, including your interface or hosting provider.
- HIPAA safeguards. Encrypt the connection and stored messages. Limit who can see the interface logs. Keep an audit trail of who viewed or changed a result.
- Patient access. Since the 2014 HHS rule that changed CLIA and HIPAA, patients can get their completed test reports directly from a HIPAA-covered lab. Your portal is not the only way, and it must not hold results back without a reason the rules allow.
- Information blocking. Providers and health IT developers covered by the information blocking rules must release results to patients without unreasonable delay, unless an exception applies.
Testing checklist before go-live
- Every test in your top 50 ordered tests sends, with its AOE questions answered
- A Medicare order that needs an ABN, and one that does not
- An order cancelled after sending
- A preliminary result, then the final, then a corrected one
- A result for an order placed on paper
- A result for a patient with a similar name and date of birth to another patient
- A PDF report, attached to the right result
- An abnormal result reaching the right clinician's inbox
- A failed message that alerts someone and can be replayed
- A second location with a different account number
How Nirmitee helps
We build and run lab connections for EHRs and health products: HL7 v2 orders and results, FHIR, interface engines such as Mirth Connect, result matching and monitoring. We built a production Labcorp connector. We design lab layers so that adding Quest or another lab is one more connection. See our laboratory integration services. Or tell us your lab and your EHR, and we will tell you the route and what Quest will ask for.
Sources
- Quest Diagnostics, Request EHR interface support and GetMyInterface request page, checked 3 November 2026
- Quest Diagnostics, Quanum EHR FHIR API Reference Guides, November 2021 and November 2022
- Quest Diagnostics newsroom, Quest Diagnostics to improve laboratory testing experience with industry-first Epic collaboration, September 23, 2025
- Quest Diagnostics help, Respond to the ABN prompts
- CapMinds, How to automate lab orders in OpenEMR using Quest APIs (third-party description of Quest's Hub API)
- Cerbo, Requesting an integration with Quest Diagnostics (setup time)
- Mindfire Solutions, Bi-directional interface between EMR and Quest Diagnostics (lookup values by business unit)
- CMS, HHS finalizes patients' right to access clinical laboratory test results, February 2014
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Frequently Asked Questions
Does Quest Diagnostics have an API?
How do I request a Quest interface?
How long does Quest integration take?
Can I get Quest results without sending orders electronically?
What are AOE questions?
Does Quest support FHIR?
What does a Quest interface cost?
Should we build Quest and Labcorp separately?
