Time leaves traces. The cities you've lived in, the materials you've worked near, the choices you've made or had made for you. Your hair has been keeping count. Traced brings that record to the surface.

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Built on more than a decade of research at one of the country's leading medical institutions.

BACKGROUND

Traced is developed by LinusBio, built on research conducted at the Icahn School of Medicine at Mount Sinai. It uses proprietary robotic and laser ablation technology to read the chemical record stored inside each strand of hair. Hair grows roughly one centimeter a month, and every centimeter holds a chapter. Traced reads that sequence and maps it across time, so every pattern has a date and every result comes with practical guidance.

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Years of biomarker research at Mount Sinai

Elements tracked across time

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Most people have never had a clear picture of their environmental exposures. Traced exists to change that.

Instincts deserve evidence

For the parent who switched to a filter and wants to know if it worked. For the person whose energy shifted after a house move and never got an explanation. Traced exists to give you the clearest picture yet of your environmental exposures.

The significance of time

Every other test tells you what's present at the time of testing. Traced tells you when it got there. That's not a feature—it's a category we created because the gap was too important to leave unfilled.

Insight that supports choices

Your report doesn't end with a number. It ends with plain-language guidance: sources identified, timeframes mapped, and tips to support informed lifestyle choices. Knowing what your results show is only the beginning. What matters is what you do with it.

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The question driving Dr. Arora's research has always been the same: how do environmental exposures impact us?

OVERVIEW

As an environmental epidemiologist at the Icahn School of Medicine at Mount Sinai, he spent more than a decade trying to answer it. His work led to the idea that the environment doesn't leave a static mark on the body, but a dynamic one. A record, laid down over time, that could be read if you knew how to look. He and his colleagues formalized that as the Biodynamic Interface Theory in 2020, and it became the science at the core of Traced. That research has been recognized by the National Institutes of Health with some of its most prestigious awards, including the NIH Director's New Innovator Award and the Presidential Early Career Award for Scientists and Engineers. Traced is the expression of that work, built to put a personal timeline of environmental exposure into the hands of anyone who wants to understand it.