Sdi Diagnostic

What Sdi Diagnostic does

SDI Diagnostics, Inc. is a privately held Massachusetts corporation founded in 1978 that designs, manufactures, and distributes spirometry equipment and pulmonary function testing (PFT) supplies. The company operates from a single facility in Easton, Massachusetts, where most products are made, and sells primarily to US healthcare buyers through a distributor network supplemented by direct sales support and an e-commerce-enabled website. Its customer base spans hospitals, occupational health clinics, physician offices, nursing homes, and ambulatory surgery centers, addressing the detection and monitoring of COPD and other respiratory conditions plus the prevention of cross-contamination during spirometry testing.

The product portfolio centers on three Astra-branded spirometers (Astra BT, Astra 300, AstraTouch), the AstraPro spirometry software platform (real-time graphics, pediatric incentive displays, lung age estimation, SQL database, EMR export), and a broad consumables line that includes bacterial/viral filters (AstraGuard, Filtrette, PulmoGuard series) at 99.999% cross-contamination efficiency, multiple mouthpiece families (Accurette, AirTube, Spirotube, Comfit, Mini, Safe-t-Chek, SmartSense), nose clips, calibration syringes, and thermal printer rolls. All disposables are FDA-registered, filters meet ATS/ERS standards, and the consumable lines are explicitly engineered for compatibility with the installed bases of ndd, Midmark, Vitalograph, and KoKo spirometers without voiding OEM warranties.

Revenue is generated through three streams: one-time hardware sales of Astra spirometers, recurring consumable sales (filters, mouthpieces, nose clips, calibration supplies) that drive repeat purchases from an established customer base, and one-time software licenses for AstraPro. Pricing is publicly disclosed on consumable SKUs with volume tiers (e.g., 50/box vs. 200/case) and value-based positioning on best-quality-at-lowest-price. The company is independently operated with no disclosed investors, no parent company, no funding history, and no acquisitions, and it markets via its own website and LinkedIn presence supported by product registration and technical support channels.

Name

Sdi Diagnostic

Legal name

SDI Diagnostics, Inc.

Website

https://sdidiagnostics.com

Company type

Private

Founded year

1978

Operating status

Operating

Headcount range

1–10 employees

Short description

SDI Diagnostics is a privately held, Massachusetts-based manufacturer of spirometry equipment and pulmonary function testing consumables, serving US hospitals, occupational health clinics, and physician offices since 1978.

Ownership category

akta.pro rank

Product category

Spirometry and Pulmonary Function Testing Equipment

NAICS

Analytical Laboratory Instrument Manufacturing (334516), Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers (423450)

SIC

Surgical & Medical Instruments & Apparatus (3841), Wholesale-Medical, Dental & Hospital Equipment & Supplies (5047)

akta.pro industry

PRIMARYHLAHAGAH

Pulmonary Function Testing (PFT) & Spirometry Equipment

Healthcare & Life Sciences/Medical Devices & Diagnostics/Respiratory & Sleep Therapy Devices

SECONDARYHLAHACAD

Blood Oxygen & Respiratory Monitoring (Pulse Oximetry, Capnography, Spirometry)

Healthcare & Life Sciences/Medical Devices & Diagnostics/Patient Monitoring, Wearables & Remote Diagnostics

Keywords

• Spirometry equipment
• Pulmonary function testing
• Respiratory diagnostic supplies
• Bacterial viral filters
• Spirometer accessories

Headquarters

HQ city

Easton

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Supply Chain, Personnel, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Spirometer Equipment Sales: Sale of spirometry equipment including Astra BT, Astra 300, and AstraTouch spirometers. One-time hardware sales with software included or sold separately.
2. Filter and Consumable Sales: Recurring sales of PFT/spirometry filters (AstraGuard, Filtrette, PulmoGuard series), mouthpieces, nose clips, and calibration supplies. Consumable products drive repeat purchases from established customer base.
3. Software Licenses: AstraPro spirometry software sold with manuals for Astra 200, 300, and AstraTouch spirometers. Available as CD or download.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

SDI Diagnostics, Inc. manufactures and supplies spirometry equipment and consumables for pulmonary function testing, including its own line of Astra spirometers (Astra BT, Astra 300, AstraTouch), an extensive portfolio of bacterial/viral filters and filtered mouthpieces (AstraGuard, Filtrette, PulmoGuard, Accurette, AirTube series), complementary disposables such as nose clips, calibration syringes, and printer rolls, and the AstraPro spirometry software. The portfolio is designed for compatibility with leading spirometer brands including ndd, Midmark, Vitalograph, and KoKo, and targets hospitals, occupational health clinics, physician offices, nursing homes, and surgery centers performing respiratory diagnostics.

Product overview

SDI Diagnostics is a manufacturer and supplier of spirometry equipment and supplies for pulmonary function testing. The company offers a portfolio of three Astra spirometer devices (Astra BT, Astra 300, and AstraTouch), an extensive line of PFT/spirometry filters including AstraGuard, Filtrette, and PulmoGuard variants, various mouthpieces (Accurette, AirTube, Spirotube, Comfit, Mini Mouthpiece, Safe-t-Chek, SmartSense), nose clips (Kushion Klip, Sofsnug, KLIP), calibration syringes, and printer rolls. Their products are designed to be compatible with ndd, Midmark, Vitalograph, Morgan, and KoKo spirometers. The company also offers AstraPro software for data management and analysis. Most products are made in the USA at their Massachusetts facility.

Differentiator

Problem solved

Functional benefit

Products and services

• Astra BT Spirometer Spirometer device for pulmonary function testing, compatible with SDI filters and accessories; for hospitals, occupational health clinics, and physician offices.
• Astra 300 Spirometer Spirometer device for pulmonary function testing with advanced measurement capabilities; designed for healthcare providers performing respiratory diagnostics.
• AstraTouch Spirometer Touchscreen spirometer device for pulmonary function testing with intuitive interface; for healthcare facilities performing respiratory testing.
• AstraPro Spirometry Software Spirometry software for Astra 200, 300 and AstraTouch Spirometers with real-time graphics display, pediatric incentive displays, lung age estimation, SQL database, and EMR export (PDF, Excel, XML, HTML); for pre/post bronchodilation and bronchoprovocation testing in clinical settings.
• AstraGuard Filters Bacterial and viral filter for spirometry testing designed to prevent cross-contamination between patients; FDA-registered disposable for use with Astra spirometers.
• Filtrette Filters One-piece filtered mouthpiece alternate to ndd Spirette, offering 99.9% bacterial and viral protection; FDA-registered disposable for ndd EasyOne and EasyOn spirometers.
• PulmoGuard Filters Bacterial and viral filter line for spirometry with 99.999% cross-contamination efficiency meeting ATS/ERS standards; FDA-registered disposable filter family for multiple spirometer brands.
• Accurette Mouthpiece Replacement mouthpiece for ndd Spirette, FDA approved and designed to fit every spirometer with accuracy confirmed by ndd calibration check; no adapters required.
• AirTube Mouthpiece Alternative mouthpiece to ndd FlowTube for ndd EasyOne Air and EasyOne Sky spirometers with low resistance and comfortable oval design; prevents cross-contamination and ensures accurate test results.
• Spirotube Mouthpieces Disposable cardboard and plastic mouthpieces for spirometry testing; cost-effective consumable supply for high-volume clinical use.
• Calibration Syringe, 3 Liter 3-liter calibration syringe designed for spirometer calibration checks; Made in America, available with adapter for Astra spirometers.
• Nose Clips for Spirometry Comfortable disposable nose clips (Kushion Klip, Sofsnug, KLIP) for spirometry tests; ensures patient nasal occlusion during pulmonary function testing.
• Printer Rolls for Spirometers Thermal printer rolls designed for SDI AstraTouch and KoKo spirometers; consumable supply for test result printing.

Quantifiable outcome

• 99.999% cross-contamination efficiency
• +1 more outcomes

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• ndd MedizintechnikcoreTechnology or IntegrationSDI Diagnostics products are designed for compatibility with ndd EasyOne spirometers. Accurette mouthpiece is an alternate to ndd Spirette; AirTube is an alternate to ndd FlowTube. Products carry ndd calibration check confirmation and do not affect ndd spirometer warranties. SDI is not affiliated with or endorsed by ndd.

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Midmark: US medical equipment manufacturer offering IQspiro digital spirometers. SDI makes SmartSense disposable mouthpieces and filter kits specifically for Midmark spirometers, creating direct overlap in the US primary care and occupational health market.
• COSMED: Italy-based manufacturer of metabolic and pulmonary function testing equipment. Direct competitor in the professional spirometry and PFT equipment market globally.
• Morgan Scientific: US manufacturer of PFT and spirometry equipment including the ComPAS and other pulmonary function systems. SDI designs compatible filter products for Morgan spirometers, indicating direct market overlap.
• ndd Medizintechnik: Swiss manufacturer of EasyOne and other ultrasonic spirometers. Directly comparable hardware competitor; SDI's Accurette and AirTube mouthpieces are designed as compatible aftermarket alternatives to ndd's Spirette and FlowTube consumables.
• nSpire Health (KoKo): Manufacturer of KoKo spirometers and PFT systems. SDI produces PulmoGuard K filters specifically for KoKo platforms, indicating direct competition and a complementary consumable relationship.
• MGC Diagnostics: US manufacturer of cardiopulmonary diagnostic equipment including PFT systems. Direct competitor in the pulmonary function testing equipment market, particularly for hospital and clinical pulmonary labs.
• Vitalograph: UK-based spirometry equipment manufacturer producing Alpha, Compact, and Pneumotrac spirometers. SDI designs dedicated PulmoGuard filter variants for Vitalograph platforms, making it a direct competitor and complementary consumable supplier.

Broad incumbents

• Vyaire Medical: Global respiratory and anesthesia equipment manufacturer offering a broad portfolio that includes spirometry and PFT systems. Competes with SDI indirectly via larger hospital PFT equipment installations and consumables.
• Schiller Americas: Swiss manufacturer of cardiopulmonary diagnostics including spirometry devices. Operates as a broader medical device player with spirometry as one of several diagnostic categories, competing for hospital procurement budgets.
• Becton Dickinson (BD): Large diversified medical device and diagnostics company. While not a dedicated spirometry specialist, BD operates broadly in respiratory diagnostics, medical consumables, and hospital supply categories where SDI competes.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sdi-diagnostics

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sdi Diagnostic