Digital health infrastructure · Lab and device APIs
Junction
An API that orders lab tests in all 50 US states and standardises data from hundreds of wearables. It was called Vital until March 2025, and almost everything checkable about it is commercial rather than clinical.
A question on Hacker News
On July 21, 2022, a small company called Vital posted a launch thread on Hacker News. Most replies were predictable: complaints about the docs, a request for the device list, a question about pagination. Then a reader asked the thing that decides whether the product is legal at all.
“How does the lab testing API work? How do doctors’ orders fit in?”
Maitham Dib, the founder, answered in one paragraph: he had partnered with laboratories in the United States and built a physician network covering every state, which could write the doctor’s order when a patient met criteria agreed in advance.
That answer is the company. The webhooks, the SDKs, the wearable integrations are software, and software is the part anyone can copy. The lab side rests on two things Junction does not own: laboratories hold the certificates, and physicians sign the requisitions.
Why a blood test needs a signature
In most of the United States you cannot walk into a laboratory and buy your own blood panel. A clinician has to order it. New York wrote its version down precisely: Public Health Law amendments effective September 24, 2002 let a laboratory holding a New York permit offer certain tests straight to consumers with no order from a medical professional, but only where the FDA has approved an over the counter kit or collection device. Everything else needs an authorising clinician. You can build an elegant checkout flow and still have no lawful route to the laboratory bench.
Junction’s answer is a physician network, and its documentation puts the requirement without decoration: “For an order to be valid/complete, both the request and the results need to be validated by a physician.” Three arrangements exist: Junction’s network signs the order and reviews results, the customer names its own physician for both, or the two split it, with Junction’s network always notified of a critical value.
The commercial boundary sits in the pricing FAQ: “We provide the doctor’s order for the test, but we do not currently offer physician consults or personal result interpretations.” Junction writes the order and does not practise medicine on top of it. Who those physicians are is not published. The API returns them as a first name, a last name and an NPI number.
Ten surgeries and a misdiagnosis
Dib is a British engineer, born in August 1993 according to the UK register. He trained in aerospace engineering, then moved into health software at Babylon Health, the London telehealth company that reached a $2 billion valuation before coming apart. The personal reason came first.
“By the age of 21, I had undergone 10 surgeries. I ended up needing hospital treatment after being misdiagnosed with stress, when in reality, I had a cancerous infection,” he told Fitt Insider in 2023.
At Babylon he met the engineering problem under the clinical one. “Immense amounts of engineering resources were being spent just on getting access to high-quality data.”
He incorporated Adept Labs Limited on November 5, 2021, in north London, with one pound of share capital and himself as the only director. The Y Combinator directory lists the Winter 2020 batch and a 2021 founding year, two facts that cannot both describe one entity. The British register begins in November 2021, and Dib has been its sole officer since.
From wearables to labs to a new name
The first product was a widget Dib has described as Plaid for health devices. It connected Dexcom, Abbott’s FreeStyle Libre and Accu-Chek for the metabolic health startups then multiplying. Customers kept asking for the harder thing: the blood test itself. Vital began that with an allergy company, Wyndly. In June 2022 Point Nine led a $2.9 million seed round, joined by 20VC, Amino Collective, Adventure Fund and Inflect Health, plus angels including the chief executives of Kry and Meru Health.
On March 11, 2025 Creandum led an $18 million Series A and the company changed its name. Brendan Keeler, who writes an independent survey of health data plumbing, read the move plainly: “Vital rebranded to Junction, repositioning by bundling a first-class lab ordering product as a combined healthcare infrastructure play.”
The lab network is why. Junction routes orders through Labcorp and Quest and, since October 2024, BioReference Health, opening 77 patient service centres in New York and New Jersey. Those states had been shut to Junction customers “due to restrictions from Quest and LabCorp.” They also carry rules no API dissolves: both “require you to demonstrate pass-through lab test pricing without markups,” and Junction sent customers to their own lawyers.
What is proven, and what is still claimed
| Evidence | What the record shows | Source type |
|---|---|---|
| UK corporate record | ADEPT LABS LIMITED, number 13725704, incorporated in London Nov 5, 2021 with GBP 1 of capital. Sole director and sole person with significant control: Maitham Assaad Dib. Micro entity accounts from Nov 2022 to Nov 2025. No return of allotment on file. | Public record |
| SEC filings | No Form D and no filing of any type for Adept Labs in EDGAR, checked Sep 24, 2026. A separate Junction Health, Inc. of Denver (CIK 0002031239) does file Form D and matches this company on nothing. | Public record |
| Laboratory certification | Junction states “We only work with CLIA and CAP certified labs.” Those certificates sit with the partner laboratories: Labcorp, Quest and BioReference Health. No record found of Junction holding one, and it claims none. | Company-stated |
| Who orders the test | Docs require physician validation of both request and results, via Junction’s network, the customer’s physician, or a split. The API returns a name and an NPI. The group and its medical director are unnamed. | Not disclosed |
| State restrictions | NY law permits direct access testing only where an FDA approved over the counter kit exists. New York and New Jersey stayed closed to Junction customers until the BioReference partnership of Oct 11, 2024, and both require pass-through pricing with no markup. | Record and company |
| Security certification | SOC 2 Type 2 and ISO 27001 claimed on the site, with GDPR Ready and HIPAA Compliant badges. The signed BAA and the reports are Enterprise features. No HITRUST found. | Company-stated |
| Named customers | Found, Parsley Health and Evidation named by TechCrunch; Lifeforce by Longevity.Technology; Wyndly and Avon Health by the company. More than 140 claimed. | Independent and company |
| Lab test volume | The Series A release and Longevity.Technology report more than 500,000 tests a year. Dib told TechCrunch the same day it was “on track to do about a million lab tests this year.” | Two figures, one day |
| Clinical record | No FDA 510(k) or PMA, no registered trial, no NIH or NSF award, no PubMed paper attributable to the company. | Not found |
Read plainly: this is a plumbing company and should be judged as one. Junction never touches a specimen, never signs a CLIA certificate, never reads a result. It sells an order and a network, and the regulatory weight sits with the laboratories and physicians it contracts. What a reader cannot verify is who those physicians are and how many tests run through the pipe.
What to watch
- The identity of the physician group behind Junction’s ordering authority, which no public document names.
- A Form D, if the next round is sold into the US under Regulation D. Nothing has been filed so far.
- A return of allotment at Companies House, showing the UK entity capitalised rather than held at one pound.
- Whether one lab volume figure settles. Two were published on March 11, 2025.
In their words
“We handle the supplies for the kits but the actual testing is carried out by our partner laboratories. We have a physician network that handles the requisition process for ordering, and have turned that into API that any developer can use.”
Maitham Dib, founder and CEO, Launch HN, 2022 · Public forum
“We’ve partnered with a number of labs in the U.S. and have a physicians network that covers all 50 states, that allows us to write doctors orders if your customers meet the pre-requisite requirements as agreed with our doctor.”
Maitham Dib, Launch HN, 2022 · Public forum
“We provide the doctor’s order for the test, but we do not currently offer physician consults or personal result interpretations.”
Junction pricing FAQ, 2026 · Company
“And we’re on track to do about a million lab tests this year as well.”
Maitham Dib to TechCrunch, 2025 · Independent
“Vital rebranded to Junction, repositioning by bundling a first-class lab ordering product as a combined healthcare infrastructure play.”
Brendan Keeler, Health API Guy, 2026 · Independent analyst
“Vital is incredible. They’ve let us build a truly unparalleled experience at Wyndly.”
Aakash Shah, CEO of Wyndly and a customer, Launch HN, 2022 · Customer
Related companies
Sources
- Public recordADEPT LABS LIMITED 13725704: officers, PSC, filing history
- Public recordEDGAR searches for Adept Labs returning no filings
- Public recordDirect Access Testing, Clinical Laboratory Evaluation Program
- Public recordFDA, ClinicalTrials.gov, NIH, NSF and PubMed searches, no records
- IndependentJunction, an API to link health wearables with labs, raises $18M
- IndependentJunction lands $18m for decentralized healthcare
- IndependentThe Wearables Interoperability Stack
- InterviewVital CEO Maitham Dib on Interoperability for Health Data
- Public forumLaunch HN: Vital (YC W20), with founder replies
- CompanyMeet Junction: $18M to Power Personalized Care
- CompanyNew Lab Testing Services in New York and New Jersey
- CompanyPricing page and FAQ
- CompanyOrder and Follow-up Physician, Lab Accounts, Insurance
- CompanyTerms of Service naming Adept Labs Inc. dba Junction
Profile researched and written by Healthcare Discovery. Last updated September 29, 2026.
