ReactDx
ReactDx develops, manufactures, and operates ambulatory cardiac monitoring (TelePatch, Decipher Holter) and home sleep testing (NiteWatch, ARES 620) services for cardiologists, sleep physicians, and primary care providers across the United States, using its patented Diogenes ECG algorithm and a unified physician portal with complimentary EMR integration.
- Company typePrivate
- Founded1981
- HeadquartersMelbourne, United States
- Headcount101–250
- GTM typeB2B
- OfferingServices
What ReactDx does
ReactDx (operating subsidiary Medicomp, Inc.; recently rebranded to Pivotal Health) is a Melbourne, Florida-based developer, manufacturer, and service provider of ambulatory cardiac monitoring and home sleep testing diagnostic systems. The company traces its origins to Medicomp, founded in 1981, and was reorganized in 2022 under the ReactDx umbrella together with Watermark Medical and BioSerenity USA, all ultimately held by React Health Holding, LLC. Its product portfolio centers on the TelePatch dual-channel ambulatory cardiac monitor (used for MCT and Extended Holter), the Decipher Holter monitor, the NiteWatch FDA-cleared 6-channel home sleep test device launched August 2024, and the ARES 620 home sleep test system. All cardiac diagnostics run on the proprietary Diogenes algorithm (patented 1986), which the company describes as the only ECG algorithm performing beat-to-beat P-Wave analysis alongside Rate, Rhythm, and Morphology classification.
The RDxOne Portal (rebranded ReactOne Portal in 2024) provides a unified physician dashboard for patient enrollment, report review, electronic signature, and cross-modality ordering, with complimentary bi-directional EMR integration into Epic, eClinicalWorks, NextGen, athenahealth, Cerner, Allscripts, and others. The company operates four Cardiac Monitoring Centers nationwide staffed by U.S.-based certified cardiac technicians providing 24/7 monitoring with claimed 99.9% notification accuracy and 1-hour STAT turnaround, and holds Joint Commission accreditations for Ambulatory Health Care (2018) and Telehealth (2025) plus ACHC accreditation for sleep and cardiac diagnostic services.
ReactDx generates revenue primarily through insurance-reimbursed flat-rate diagnostic procedures (MCT, Extended Holter, Holter, Event monitoring, and home sleep testing) covered by Medicare and most commercial payors, with the company providing billing support to patients at no additional cost. Cardiac monitoring and sleep testing hardware (TelePatch, Decipher, NiteWatch, ARES 620) is provided to patients on loan during diagnostic procedures, and the company complements its diagnostic offering with sleep therapy transition services through a partnership with React Health for LUNA G3 PAP devices. The go-to-market is enterprise field sales directed at cardiologists, electrophysiologists, sleep physicians, pulmonologists, and primary care providers, augmented by a dedicated clinical trial services channel serving academic institutions, biotech, pharmaceutical, and medical device companies.
ReactDx firmographics
Firmographics- Name
- ReactDx
- Legal name
- Medicomp, Inc.
- Website
- https://reactdx.com
- Company type
- Private
- Founded year
- 1981
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- ReactDx develops, manufactures, and operates ambulatory cardiac monitoring (TelePatch, Decipher Holter) and home sleep testing (NiteWatch, ARES 620) services for cardiologists, sleep physicians, and primary care providers across the United States, using its patented Diogenes ECG algorithm and a unified physician portal with complimentary EMR integration.
- Ownership category
- akta.pro rank
ReactDx industry classification
Industry- Product category
- Ambulatory Cardiac Monitoring and Home Sleep Testing
- NAICS
- Electromedical and Electrotherapeutic Apparatus Manufacturing (334510), Medical and Diagnostic Laboratories (62151), Home Health Care Services (62161)
- SIC
- Electromedical & Electrotherapeutic Apparatus (3845), Surgical & Medical Instruments & Apparatus (3841)
- akta.pro primary industry
- Clinical-Grade Vital Signs Monitoring (ECG, SpO2, BP, Temp, Respiration) (HLACAPAI)
- akta.pro secondary industries
- Remote Diagnostics & Point-of-Care (Connected Testing, Home Lab Devices) (HLACAPAK), Cardiology Telemedicine Platforms (HLALAGAB), Cardiometabolic RPM & Chronic Disease Management (diabetes, hypertension, CHF, obesity) (HLALAFAA)
Keywords
Where ReactDx is headquartered
LocationHeadquarters
- HQ city
- Melbourne
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
ReactDx business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Diagnostic Monitoring Services: ReactDx provides ambulatory cardiac monitoring (MCT, Extended Holter, Event, Holter) and home sleep testing services. Services are billed as diagnostic procedures covered by insurance including Medicare. The test is billed at a flat rate regardless of how many days the testing lasts or how many recordings are made. Patients are responsible for co-pays, co-insurance, and deductible amounts.
- Medical Device Hardware: ReactDx develops and manufactures its own cardiac monitoring devices including TelePatch ambulatory cardiac monitoring systems, Decipher Holter monitors, and NiteWatch home sleep testing devices. These FDA-regulated medical devices are provided to patients on loan during monitoring procedures.
- Sleep Therapy Transition Services: ReactDx offers end-to-end sleep solutions transitioning patients from diagnosis to therapy with CPAP devices including LUNA G3 PAPs through partnership with React Health.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Insurance-covered diagnostic services billed at flat rate |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels5 records
ReactDx product offering
Product offeringCore offering
ReactDx develops, manufactures, and operates ambulatory cardiac monitoring devices (TelePatch MCT and Extended Holter, Decipher Holter, SAVI wireless event monitors) and home sleep testing devices (NiteWatch, ARES 620) that are provided to patients on prescription. Diagnostic data is analyzed 24/7 by U.S.-based certified technicians using the patented Diogenes algorithm, with reports delivered to prescribing physicians through the RDxOne portal and integrated EMR systems. The company also facilitates transition from sleep apnea diagnosis to PAP therapy in partnership with React Health.
Product overview
ReactDx offers a unified platform combining ambulatory cardiac monitoring and home sleep testing solutions. The core product portfolio includes the TelePatch system for Mobile Cardiac Telelemetry (MCT) and Extended Holter monitoring, the Decipher Holter monitor, and NiteWatch and ARES 620 for home sleep apnea testing. All cardiac monitoring products are powered by the proprietary patented Diogenes algorithm for beat-to-beat ECG analysis. The RDxOne Portal serves as the central physician dashboard for managing all diagnostic reports and patient enrollment across both cardiac and sleep diagnostic services. The ecosystem also includes the ReactDx Sleep App for mobile data transmission and supports EMR integration across major systems including Epic, Cerner, and athenahealth.
Differentiator
Problem solved
Functional benefit
Brands
- TelePatch: Flagship ambulatory cardiac monitoring system for MCT, Event, Holter, and Long-Term Holter procedures
- Decipher
- NiteWatch
- ARES 620
- RDxOne
- Diogenes Algorithm
Products and services
- TelePatch (MCT / Extended Holter) Flagship ambulatory cardiac monitoring system used for Mobile Cardiac Telemetry and Extended Holter procedures, featuring true dual-channel patch architecture, water resistance, multiple wear options (patch, standard electrodes, adhesive-free fingertip electrodes), and beat-to-beat analysis via the patented Diogenes algorithm.
- Decipher Holter Holter monitor that can be programmed for up to a 96-hour procedure with customized, accurate reports delivered within 24 hours by the monitoring service team.
- NiteWatch Home Sleep Test FDA-cleared home sleep test device validated against PSG studies for sleep apnea and sleep staging, measuring six distinct channels: SpO2, Photoplethysmogram (PPG), Pulse Rate, Airflow, Respiratory Effort, and Heart Rate Variability (HRV). Paired with the ReactDx Sleep mobile app for data transmission.
- ARES 620 Home Sleep Test Home sleep test system for prescription-based in-home diagnosis of adults with suspected sleep-related breathing disorders, recording airflow, SpO2, EEG, EOG, EMG, heart rate, head position, head movement, and snoring.
- RDxOne / ReactOne Physician Portal Web-based physician portal for reviewing and electronically signing reports, enrolling patients, and managing both cardiac monitoring and home sleep test reports from a single dashboard; serves as the central workflow tool for the ReactDx product family.
- ReactDx Sleep Mobile App Mobile application published on the Apple App Store and Google Play Store that pairs with the NiteWatch device to begin sleep tests and transmit recorded data to ReactDx for physician interpretation.
- Sleep Apnea Therapy Transition Services End-to-end service that transitions patients from a positive home sleep apnea diagnosis through the LUNA G3 PAP (Positive Airway Pressure) therapy device line supplied by sister company React Health, providing a closed-loop diagnosis-to-therapy pathway.
- Clinical Trial Cardiac Monitoring Services Dedicated cardiac monitoring service for academic institutions, biotechnology, pharmaceutical, and medical device sponsors running clinical trials, supporting ECG patch, standard electrode, and fingertip electrode configurations across MCT, wireless event, Holter, and CIED monitoring in over 250 languages.
Quantifiable outcome
- Shortens Extended Holter report turnaround time by up to 2 weeks compared to other providers
- +3 more outcomes
Companies that use ReactDx
Customer profileNamed customers1 record
Segments4 records
Ideal customer profiles3 records
ReactDx technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration9 records
AI capability2 records
Feature6 records
ReactDx partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- React HealthcoreReactDx and React Health operate as part of the React Family of Companies under common ownership. React Health provides the complete line of industry-leading LUNA G3 PAP (Positive Airway Pressure) devices for sleep therapy, enabling ReactDx to offer end-to-end sleep solutions from diagnosis (HST) through therapy. This partnership enables seamless patient transition from sleep apnea diagnosis to treatment.
Scale indicators4 records
Recent moves8 records
Expansion highlights6 records
ReactDx competitors and assessment
Company assessmentEmerging players
- Eko Health: Eko Health builds AI-enabled digital stethoscopes with cardiac rhythm analysis. Comparable to ReactDx's algorithmic ECG approach and cardiologist targeting, though Eko's hardware is provider-handled rather than patient-worn longitudinal monitoring.
- AliveCor: AliveCor makes KardiaMobile, a consumer/point-of-care ECG device and AI arrhythmia detection platform. Overlaps with ReactDx on AI-driven ECG analysis and ambulatory arrhythmia detection, though focused more on episodic and consumer use than longitudinal MCT.
Direct peers
- Biotricity: Biotricity is a smaller pure-play ambulatory cardiac monitoring company with connected ECG devices and RPM services. Directly competes with ReactDx in cardiology-focused MCT and Holter with similar cardiology-first GTM motion.
- iRhythm Technologies: iRhythm develops the ZIO ambulatory cardiac monitoring patch, the most direct competitor to ReactDx's TelePatch in MCT and extended Holter. Both target the same cardiologist customer with similar patch-based, AI-driven ECG analytics.
- Itamar Medical (ZOLL/Asahi Kasei): Itamar Medical (now part of ZOLL/Asahi Kasei) develops the WatchPAT home sleep apnea diagnostic and EndoPAT for cardiovascular testing. Directly competes with ReactDx NiteWatch/ARES in prescription home sleep testing sold to sleep physicians and cardiologists.
Regional players
- Compumedics: Compumedics manufactures sleep diagnostics hardware (PSG, HST) and neurodiagnostic equipment, comparable to ReactDx's NiteWatch/ARES portfolio. Operates with broader international reach but focused primarily outside the U.S. market where ReactDx is concentrated.
Broad incumbents
- ResMed: ResMed is the global leader in sleep apnea therapy and diagnostics with CPAP devices and the ApneaLink Air home sleep test. Adjacent incumbent that competes in the sleep diagnostic-to-therapy pathway ReactDx is building with the React Health/LUNA PAP partnership.
- Philips (BioTelemetry / Cardiologs): Philips acquired BioTelemetry (formerly CardioNet) and Cardiologs, making it the largest incumbent in ambulatory cardiac monitoring. Overlaps with ReactDx across MCT, Holter, and event monitoring, plus broader sleep diagnostics via the Alice NightOne home sleep test.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
ReactDx social profiles
Digital presenceReactDx financial estimates
Financial estimateRevenue estimate
Valuation estimate
ReactDx leadership team
Management profileNumber of profiles
Profiles4 records
ReactDx subsidiaries and ownership
Company hierarchySubsidiaries2 records
ReactDx funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ReactDx M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about ReactDx
What does ReactDx do?
ReactDx develops, manufactures, and operates ambulatory cardiac monitoring devices (TelePatch MCT and Extended Holter, Decipher Holter, SAVI wireless event monitors) and home sleep testing devices (NiteWatch, ARES 620) that are provided to patients on prescription. Diagnostic data is analyzed 24/7 by U.S.-based certified technicians using the patented Diogenes algorithm, with reports delivered to prescribing physicians through the RDxOne portal and integrated EMR systems. The company also facilitates transition from sleep apnea diagnosis to PAP therapy in partnership with React Health.
Is ReactDx a public or private company?
ReactDx is a private company. It is classified as corporate owned and is currently operating.
When was ReactDx founded?
ReactDx was founded in 1981. It employs 101 to 250 people.
Where is ReactDx based?
ReactDx is headquartered in Melbourne, United States, in the North America region.
How does ReactDx make money?
Three revenue lines are on record. Diagnostic Monitoring Services are the primary driver. The others are medical Device Hardware and sleep Therapy Transition Services.
Who are ReactDx's main competitors?
Emerging players on record are Eko Health and AliveCor. Direct peers are Biotricity, iRhythm Technologies and Itamar Medical (ZOLL/Asahi Kasei). Compumedics is listed as a regional player. Broad incumbents are ResMed and Philips (BioTelemetry / Cardiologs).
Does ReactDx have an API?
No public API is recorded for ReactDx.
What industry is ReactDx in?
ReactDx's product category is Ambulatory Cardiac Monitoring and Home Sleep Testing. Its primary akta.pro industry code is HLACAPAI, Clinical-Grade Vital Signs Monitoring (ECG, SpO2, BP, Temp, Respiration), with a secondary code of HLACAPAK, Remote Diagnostics & Point-of-Care (Connected Testing, Home Lab Devices). Its NAICS code is 334510 and its SIC code is 3845.