Million Marker

At-Home Diagnostic Testing

Company Information



Health & Wellness (non-internet/mobile)


El Cerrito, CA

The market for at-home diagnostic testing services will soon reach $7 billion.

Million Marker is targeting this market with a new type of testing kit.

It’s created mail-in test kits that measure a person’s potential exposure to hazardous chemicals, including ones known to cause chronic diseases.

Million Marker has already graduated from Y Combinator (an accelerator that's guided startups including Airbnb, DoorDash, and Dropbox), and partnered with the University of California, San Francisco.

The company is raising funds to scale its business, and build its own testing lab.

Team Background

Johanna Rochester - Chief Science Officer

Johanna has spent the last decade studying how environmental stressors affect hormones and health.

She’s been on the front lines of endocrine disruption research, specifically how it relates to human exposures and health effects. She previously worked at The Endocrine Disruption Exchange, a non-profit focused on endocrine research and science.

She’s also published reviews on BPA and its effects on human health. These reviews were used as the basis for regulation of BPA under California’s Proposition 65.

Johanna earned a Master’s degree and Ph.D. from the University of California, Davis.

Jenna Hua - Founder & CEO

Jenna has extensive experience as an academic health advocate.

She began her career as a research assistant at the Los Angeles Biomedical Research Institute. From there, she spent five years as a research assistant at the University of California, Berkeley.

After that, she was a project manager as UCLA’s California Center for Population Research. She then became a project manager at the University of North Carolina’s Carolina Population Center.

More recently, Jenna spent five years as a graduate student researcher at the UC Berkeley School of Public Health. She then was a postdoctoral fellow at Stanford University School of Medicine.

She earned a Bachelor’s degree in Nutrition, a Master’s degree in Public Health, and a Ph.D. in Environmental Health Sciences from UC Berkeley.

Laurynas Riliskis - Chief Technology Officer

Laurynas is a technology expert with more than 10 years of experience.

In addition to his role with Million Marker, he is the Director of Engineering for BehavioSec, a behavioral biometrics company. He’s also an advisor for the European Commission, an independent government organization that prepares legalization for Parliament.

In 2018, he founded Victor AI, an Artificial Intelligence-powered compliance platform to assist companies by automating regulatory compliance. Prior to that, he founded, a software-as-a-service company that automates workflow.

Laurynas holds a Master’s degree in Computer Science and a Ph.D. in Computer Networking from the Lulea University of Technology. He was also a postdoctoral fellow at Stanford.


Y Combinator

Seed-stage accelerator whose alumni include Scribd, Reddit, Airbnb, Dropbox and Stripe