What Makes Us ^#1

Our Story

Since 1978, we’ve been dedicated to providing healthcare professionals with trusted respiratory diagnostic tools and supplies. For more than 45 years, SDI Diagnostics has focused on offering innovative, reliable, and high-quality spirometry equipment, pulmonary filters, and accessories. We're a privately held and unfunded company, which means we can focus on what matters most—YOU.

Our Products & Solutions

We know that accuracy and reliability are non-negotiable when it comes to patient care. That’s why we offer a full range of FDA-approved spirometry products designed to meet the demands of a busy healthcare environment. Our offerings include everything from handheld and multi-function spirometers to disposable supplies like nose clips and flow sensors. Our PFT filters and mouthpieces are designed to fit most PFT devices, often eliminating the need for extra adapters. We also provide custom-fit solutions that work seamlessly with major brands like ndd™, MidMark™, and Vitalograph™.

The SDI Diagnostics Difference

At SDI Diagnostics, our philosophy is simple: treat our customers the way we want to be treated. We pride ourselves on offering support that goes beyond the sale to ensure your experience is as seamless and satisfying as possible. Our friendly and knowledgeable team is always ready to assist with everything from placing an order to answering your technical questions. We're here to provide reliable technical support and repairs, as well as expert product guidance every step of the way.

We're not just a supplier; we're your partner in respiratory care.