Why Diversity Matters in Pulse Oximetry Studies   Pulse oximeters estimate oxygen saturation using light absorption through the skin. Because optical properties vary among individuals, skin tone diversity in clinical research studies is essential for accurate device evaluation.  A well-designed pulse oximetry study must include participants representing a range of skin tones. This ensures that device performance is assessed across physiologically diverse populations and hel

Physiological monitoring in wearables has expanded rapidly, but blood pressure and heart-rate sensing now represent two of the most scrutinized technologies for regulators. As devices transition from lifestyle tools to clinical-grade solutions, development teams must demonstrate performance that meets rigorous standards such as ISO 81060-2 , ISO 81060-7, ISO 81060-3 and ISO 14155 .  Parameters Research Laboratory (PRL) supports developers navigating this shift by delivering

Transparent clinical operations have become a defining differentiator for high-performing contract research organizations. Yet many medical device and wearable developers still encounter opaque decision-making, limited protocol visibility, and communication gaps that slow execution and create unnecessary regulatory friction. The result is predictable: CRO risk mitigation becomes reactive instead of proactive , and promising technologies reach the FDA or CE mark later than the

The Hidden Measurement Problem Behind COVID-19 Hypoxia   During the height of the COVID-19 pandemic, clinicians encountered a puzzling trend: individuals with dangerously low arterial oxygen levels often appeared clinically stable and comfortable. While “silent” or “happy” hypoxia drew headlines, an equally critical issue— occult hypoxemia —posed a more subtle risk.  Occult hypoxemia  occurs when pulse oximetry readings overestimate true arterial oxygen saturation (SaO₂), mas

The Growing Importance of Precision in Oxygen Monitoring   From hospital wards to fitness wearables, pulse oximeters  have become indispensable tools for noninvasively measuring blood oxygen saturation (SpO₂). Yet the accuracy of these devices, particularly across diverse skin tones and environmental conditions, has come under scrutiny in recent years.  As regulatory bodies and clinical researchers call for more inclusive and transparent validation, the need for a specialized

A Persistent Problem Hidden in Plain Sight   For decades, pulse oximetry has served as a cornerstone of clinical monitoring—offering a quick, noninvasive estimate of blood oxygen saturation (SpO₂). Yet, the COVID-19 pandemic exposed a long-standing and underappreciated flaw: pulse oximeters can overestimate oxygen levels in individuals with darker skin pigmentation .  Inaccurate SpO₂ readings may mask hypoxemia , delay treatment decisions, and contribute to existing health di

For medical device and wearable technology developers, the success of a clinical research study often hinges on one factor: the quality of the data. High-quality, regulator-ready data not only supports FDA or CE mark submissions but also reduces the risk of costly delays and resubmissions. One of the most effective ways to secure reliable study outcomes is by partnering with a Contract Research Organization (CRO) —particularly one based in the United States.  Why Location Mat

Why Accuracy in Oxygen Monitoring Matters   Pulse oximeters are among the most widely used medical devices in hospitals, clinics, and even home settings. They provide quick, noninvasive readings of blood oxygen saturation (SpO₂) and pulse rate, information that guides critical decisions in care and monitoring. But accuracy can vary significantly between devices.   An FDA-cleared pulse oximeter  is a medical device that has passed the 510(k) review process , proving that it is

Medical devices that rely on optical sensing—such as pulse oximeters —measure physiological signals by analyzing light as it passes...

Wearable medical technology is reshaping diagnostics, monitoring, and chronic disease management. But clinical trials for wearables face unique challenges. At Parameters Research Lab , we help guide sponsors through the nuances of testing and validating wearable devices in the current regulatory landscape.  1. Accuracy Validation Across Skin Tones and Conditions   From pulse oximeters to cuffless BP monitors, sensor accuracy must hold across diverse skin tones, body types, an