Why Reference Measurements Matter Every blood pressure validation study relies on a reliable reference method to evaluate device accuracy. A trusted reference measurement provides the foundation for determining whether a monitoring device delivers accurate and clinically meaningful readings. At Parameters Research Laboratory (PRL), reference measurements are conducted by highly trained clinical research staff with deep experience in physiological monitoring studies. This lev

Blood Pressure Device Validation Studies Accurate blood pressure measurement is fundamental to physiological monitoring. As new technologies expand beyond traditional cuffs into wearable and cuffless blood pressure devices, sponsors must demonstrate performance using a structured blood pressure validation study. These studies evaluate how closely a device’s measurements align with reference measurements obtained through established clinical methods and generate the evidence r

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

Dyshemoglobins and Pulse Oximetry: How COHb and MetHb Influence Measurement Accuracy   Pulse oximetry has become central to physiological monitoring across wearables, medical devices, and clinical research studies. Yet even the most advanced sensor architectures face fundamental challenges when hemoglobin exists in altered forms—known as dyshemoglobins . Carboxyhemoglobin (COHb) and methemoglobin (MetHb) change light absorption in ways that directly influence SpO₂ readings an

Engineering leaders developing physiological monitoring devices often encounter references to “arterial line measurements” in validation standards and technical literature. Although arterial lines are invasive and placed in clinical environments, the data they generate is central to how the industry defines accuracy for non-invasive technologies.  This article explains what an arterial line is, why its measurements are considered a benchmark, and how arterial line data is use

How PRL Ensures Data Integrity in Physiological Monitoring Research   For CTOs and technical leaders in MedTech, data integrity is not a paperwork detail—it is the backbone of regulator-ready evidence. Whether your device requires pulse oximetry testing during controlled desaturation in a hypoxia lab, multi-parameter wearables validation, or multi-site clinical research studies, every data point must be defensible. ALCOA+ provides the industry-standard framework for achieving

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

On September 16, 2025, the FDA issued a safety communication  warning consumers and healthcare providers about the risks of using unauthorized devices that claim to blood pressure, including certain smartwatch and smart ring features. The agency emphasized that devices without FDA marketing authorization have not been evaluated for safety or effectiveness—leaving users vulnerable to inaccurate readings and potentially harmful health decisions.  While this warning highlights t

Blood Pressure Monitoring: A Clinical Cornerstone   Blood pressure measurement is one of the most common clinical assessments, shaping decisions in nearly every healthcare setting. However, not all blood pressure monitors provide the accuracy needed for safe clinical use. FDA-approved devices  stand apart by meeting strict accuracy standards backed by international validation protocols  and clinical research studies .  In the United States, most blood pressure monitors aren’t

Why Arterial Line Monitoring Matters in Research   When evaluating new medical devices—particularly those designed for physiological monitoring , such as blood pressure devices or pulse oximeters, researchers need an accurate reference standard. In many cases, arterial line monitoring  serves as that standard. By providing continuous, beat-to-beat measurement of arterial blood pressure, arterial lines offer unparalleled accuracy compared to noninvasive methods. This makes the

Why the Participant Experience Matters to Sponsors   For sponsors developing wearable medical devices, every detail of a clinical...