Spirometers are diagnostic devices that measure lung function by recording the volume and flow of air during breathing maneuvers. Spirometry is the most widely performed pulmonary function test in medicine, essential for diagnosing and managing asthma, COPD, pulmonary fibrosis, and other respiratory conditions. It is also required for occupational health screening, pre-operative assessment, and disability evaluation.
Whether you're adding spirometry to a primary care practice, upgrading your pulmonary function lab, or equipping an occupational health program, BuyOnMedix connects healthcare facilities with trusted suppliers offering new, certified refurbished, and lease-to-own spirometry systems at competitive prices.
Why Buy a Spirometer?
Spirometry is a foundational diagnostic capability for any practice managing respiratory patients:
- Essential Diagnostic Tool: Spirometry is required to diagnose COPD (per GOLD guidelines), classify asthma severity, and evaluate restrictive lung diseases. Without spirometry, respiratory conditions are often misdiagnosed or undertreated.
- Huge Patient Population: COPD affects over 15 million diagnosed Americans (millions more undiagnosed), and asthma affects 25+ million. These patients require periodic spirometry for diagnosis and ongoing management.
- Revenue Generation: Spirometry testing is well-reimbursed by Medicare and insurers when performed with proper technique, quality assurance, and interpretation. Pre- and post-bronchodilator testing increases reimbursement per encounter.
- Occupational Health: Many industries require baseline and periodic spirometry screening for workers exposed to respiratory hazards, creating a steady volume of testing for occupational medicine practices.
- Office-Based Testing: Modern spirometers are compact, affordable, and easy to use, enabling primary care practices to perform quality spirometry without referring to specialized pulmonary labs.
Types of Spirometers
Spirometers range from simple handheld devices to comprehensive pulmonary function testing systems.
Desktop / Office Spirometers
Mid-range spirometers designed for primary care offices, pulmonology clinics, and occupational health settings. They connect to a PC or include an integrated display, provide real-time flow-volume and volume-time curves, quality grading, and predicted value calculations. Popular models include the NDD EasyOne Air, Vyntus SPIRO, and MIR Spirolab.
Handheld / Portable Spirometers
Compact, battery-powered devices for point-of-care testing, home monitoring, and field screening. Some connect to smartphones or tablets via Bluetooth. While convenient, they may have fewer features and less precision than desktop systems. The NDD EasyOne Air and MIR SmartOne are leading handheld options.
Full Pulmonary Function Testing (PFT) Systems
Comprehensive laboratory systems that perform spirometry plus lung volumes, diffusion capacity (DLCO), bronchial challenge testing, and other advanced pulmonary function measurements. These are the standard for hospital pulmonary function laboratories. Major systems include the Vyaire Vyntus, MGC Diagnostics, and NDD EasyOne Pro.
Incentive Spirometers
Simple, inexpensive devices used by patients to practice sustained maximal inspiration after surgery or during respiratory illness. They encourage deep breathing to prevent atelectasis and pneumonia. They are not diagnostic devices — they are therapeutic tools used at the bedside.
How to Choose the Right Spirometer
Selecting a spirometer depends on your clinical setting, testing volume, and required measurements:
- Testing Scope: If you only need basic spirometry (FVC, FEV1, FEV1/FVC), a desktop or handheld spirometer is sufficient. If you need lung volumes, DLCO, or bronchial challenge testing, you need a full PFT system.
- ATS/ERS Compliance: Ensure the spirometer meets current American Thoracic Society (ATS) and European Respiratory Society (ERS) technical standards for accuracy, precision, and quality assurance.
- Sensor Technology: Turbine, ultrasonic, and pneumotachograph sensors each have advantages. Ultrasonic sensors (used by NDD) require no calibration. Pneumotachographs offer high precision but need regular calibration.
- Software and Interpretation: Evaluate the quality of predicted value databases (GLI-2012 is the current standard), quality grading algorithms, trend analysis, and EMR connectivity.
- Disposable vs. Reusable Sensors: Some systems use disposable flow sensors that eliminate cross-contamination risk but create ongoing supply costs. Others use reusable sensors that require cleaning and calibration.
- Portability: For occupational health screening, home visits, or multi-site practices, portable and handheld devices offer important flexibility.
- Training and Support: Spirometry quality depends heavily on proper technique. Choose a vendor that provides comprehensive training for your technicians and ongoing support.
What Affects Spirometer Pricing?
Spirometer prices vary based on type, capabilities, and measurement scope:
- Testing Capabilities: Basic spirometry-only devices are the most affordable. Systems with DLCO, lung volumes, and bronchial challenge capabilities are significantly more expensive.
- Sensor Technology: Ultrasonic and advanced pneumotachograph sensors cost more than simple turbine sensors but offer better accuracy and less maintenance.
- Software: Advanced interpretation software with GLI-2012 reference values, quality grading, trending, and EMR integration adds to cost. Some vendors charge annual software licensing fees.
- Brand: Leading manufacturers include NDD Medical Technologies, Vyaire Medical (now part of Baxter), MIR, and MGC Diagnostics. Premium brands with advanced sensor technology command higher prices.
- New vs. Refurbished: Refurbished spirometers typically cost 25–40% less than new. They undergo sensor calibration, software updates, and accuracy verification against reference standards.
- Consumables: Disposable mouthpieces, nose clips, filters, and calibration syringes are ongoing costs. Systems with disposable flow sensors have higher per-test costs but lower infection control burden.
Frequently Asked Questions
How often should a spirometer be calibrated?
ATS/ERS standards require daily calibration verification using a 3-liter calibration syringe for volume-based spirometers. Ultrasonic spirometers may not require daily calibration but still need periodic accuracy verification. Full calibration should be performed after maintenance, repair, or software updates.
What's the difference between spirometry and full PFT?
Spirometry measures airflow (FVC, FEV1, flow rates) and is the basic lung function test. Full PFT includes spirometry plus lung volume measurements (TLC, RV, FRC), diffusion capacity (DLCO), and potentially bronchial challenge or exercise testing, providing a comprehensive assessment of lung function.
Can primary care offices perform quality spirometry?
Yes. With proper equipment, trained technicians, and quality assurance procedures, primary care offices can perform diagnostic-quality spirometry. Key requirements include ATS/ERS-compliant equipment, trained staff, daily calibration checks, and physician interpretation.
How long does a spirometry test take?
A basic pre-bronchodilator spirometry test takes 15–20 minutes including instruction, practice, and a minimum of three acceptable maneuvers. Adding post-bronchodilator testing adds 15–20 minutes for medication administration and repeat testing.
Do spirometers need special maintenance?
Maintenance includes daily calibration verification, regular sensor cleaning or replacement, software updates, and annual service checks. Infection control measures include disposable mouthpieces/filters and surface disinfection between patients.