Why Small UX Details Can Matter More Than Years of R&D: Interview with Eli Health CEO Marina Pavlovic Rivas

Why Small UX Details Can Matter More Than Years of R&D: Interview with Eli Health CEO Marina Pavlovic Rivas

From Medsider: Learn from Medtech and Healthtech Founders and CEOs by Scott Nelson

January 27, 2026 · 50 min

About this episode

Marina Pavlovic Rivas discusses the importance of small UX details in product development and how they can outweigh years of R&D.

In this episode of Medsider Radio , we sat down with Marina Pavlovic Rivas , co-founder & CEO of Eli Health . The company is focused on making hormone data accessible in real time through its saliva-based testing system that delivers results through a mobile app. A data scientist by training, Marina previously founded Gradiant AI, a machine learning company that was acquired in 2019. In this interview, Marina discusses how to evaluate form factor options without locking into a design too early, what beta testing reveals that years of lab work can't, and how existing consumer spending patterns influence positioning and pricing strategies. She also shares how regulatory considerations shaped product decisions from the outset and why building in-house proved more efficient than outsourcing when external partners said the company’s goals were impossible. Before we dive into the discussion, I wanted to mention a few things: First, if you’re into learning from medical device founders and CEOs, and want to know when new interviews are live, head over to Medsider.com and sign up for our free newsletter. And if you’re ready to level up your medtech game, you should check out Medsider…

People in this episode

Host: Scott Nelson

Guest: Marina Pavlovic Rivas

Topics covered

  • UX design
  • healthtech
  • product development
  • beta testing
  • regulatory considerations

Keywords

  • UX design
  • health data
  • saliva testing
  • beta testing
  • product strategy

Mentioned in this episode

Organizations: Eli Health, Gradiant AI, Medsider

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