Give a sustainable twist to your diagnostic product

The Problem

Every year, billions of rapid tests are used once and discarded, creating tens of thousands of tonnes of plastic waste. Made from petrochemical plastics, they are rarely recyclable and usually burned or buried, adding carbon emissions and toxic pollution. Designed for single use, each test contributes to the growing burden of medical plastic waste.

The Solution

At Okos, we believe diagnostics should protect both people and the planet. That’s why we created the first biodegradable universal cassette for rapid tests. Made from plant-based materials, our cassettes match the strength of traditional plastics but break down naturally. Compatible with existing manufacturing, they stay cost-effective while reducing long-lasting waste, bringing healthcare closer to true sustainability.

Our materials - Sustainable Innovation, built into every test.

Name: Okos Diagnostics
Address: 70 Langegracht, Leiden, ZH, 2312 NV, NL
Telephone: +31 850 041 330

We use next-generation bioplastics engineered to reduce reliance on fossil fuels and minimize environmental impact.

Unlike conventional plastics, our blends are safe, biocompatible, and designed to biodegrade without leaving toxic residues or microplastics.

Eco-friendly 4-in-1 Combo Antigen Test: ecoFluorecare.

The ecoFluorecare COVID-19, Influenza A/B, and RSV Antigen Combo Rapid Test is a rapid, home-use, immunoassay for the qualitative detection of SARS-CoV-2, Influenza A and B virus and RSV antigens with (easy-to-use) nasal swabs.

Eco-friendly easy-to-use H. Pylori Infection Test

Eco-friendly self-test for the qualitative detection of the bacteria Helicobacter pylori in stool samples. H. pylori can cause various digestive problems, including gastritis (inflammation of the stomach lining), peptic ulcers, and stomach cancer.

Eco-friendly Thyroid Stimulating Hormone (TSH) Test

Thyroid Stimulating Hormone home-use rapid test for the qualitative detection TSH in whole blood. The test is meant to aid in screening for primary hypothyroidism.

Products Designed For You & the Planet

A New Era of Diagnostics

Scalable

Compatible with all Shengfeng's cassette catalog and manufacturing capacity.

Durable

Engineered to be shelf -stable in storage for 3+ years*.

Greener

100% biobased formula with up to 49% less CO2 emissions compared to regular plastics.

Invented & Patented

The first to develop and patent a fully biodegradable diagnostic cassette.

Made from plants, not plastic.

At Okos Diagnostics, we’re reimagining diagnostics for a healthier, waste-free future.

Our biodegradable cassettes perform like traditional rapid tests—precise, reliable, and scalable—but leave behind no toxic legacy. They are microplastic-free, compostable, and developed to meet global standards of safety and quality.

Accurate for healthcare. Gentle on the planet. Designed for the next generation.

About Okos Diagnostics

In 2020, Mexican product designer Luis Fernando Barrios envisioned a solution to reduce the growing plastic waste from single-use antigen tests. His project, the biodegradable testing kit, was showcased at Prototypes for Humanity, gaining international recognition as an innovation at the crossroads of design, healthcare, and sustainability.

At the same time in the Netherlands, Sander Brus was building PrevViral, a company that validated and distributed millions of antigen tests while establishing large-scale testing facilities. His work highlighted both the urgent need for accessible diagnostics and the environmental problem caused by their waste.

When their paths crossed, Luis and Sander combined their expertise and shared vision. Together, they created the world’s first environmentally friendly test kit, proving that medical diagnostics could be both effective and sustainable.

This collaboration led to the founding of Okos Diagnostics B.V. in 2021. Early prototypes and patent applications were funded by PrevViral, setting the foundation for growth. Today, Okos partners exclusively with Shengfeng Plastics to ensure quality and scalability in production.

At Okos, we believe healthcare should never come at the cost of the planet. Our mission is to pioneer biodegradable diagnostic solutions that safeguard human health while reducing environmental impact. We aim to inspire trust, create value for our partners, and lead the transition toward a more sustainable future in diagnostics.