# Refeyn: Research, Oxford, United Kingdom

> Refeyn: Refeyn is an innovative company founded in 2018 as a spinout from Oxford University, specializing in mass photometry. Based in Oxford, United Kingdom.

Source: https://millionrounds.com/startup/refeyn (Millionrounds; every figure on the page links to its filing or article)

United Kingdom · [Research startup](https://millionrounds.com/companies)

# Refeyn

Refeyn is an innovative company founded in 2018 as a spinout from Oxford University, specializing in mass photometry.

Funding reported Last round: Series A

Research Oxford, United Kingdom

Company summary

- **Founded:** 2018 8 years old
- **Team:** 170 51 to 200 people
- **Funding reported:** 30M as listed, currency not stated
- **Last round:** Series A Nov 2020

How sure we are

- ✓ **Listed** We know it exists and what it does
- 2 **Funding reported** A company dataset reports a raise
- 3 **Observed** A filing or a dated announcement confirms a round

No round for Refeyn has been confirmed by a filing or an announcement yet, so nothing here counts toward an investor's record. [How we decide](https://millionrounds.com/methodology)

## About Refeyn

Refeyn is an innovative company founded in 2018 as a spinout from Oxford University, specializing in mass photometry.

This bioanalytical technology allows for the precise measurement of single molecules in their native, unlabeled state in solution. Headquartered in Oxford, UK, with additional offices in the US, Europe, Asia, and Japan, Refeyn aims to make its technology accessible to the global scientific community. The company's flagship product, the Refeyn mass photometer, is a compact analytical device designed for rapid mass analysis. It features automated software for efficient data processing and is capable of detecting molecular masses of single particles. Refeyn's technology is widely used in the life sciences sector, particularly in academic institutions and biopharmaceutical companies, for applications such as vector analytics, protein-protein interactions, and antibody aggregation analysis. With a strong focus on innovation, Refeyn is transforming biomolecular characterization and advancing bioanalytics.

## What company datasets say Refeyn raised

Funding, as reported

Reported in all **30M** in the source's currency

Rounds **2**

Last round **Series A**

Last round size **30M**

Last round date **Nov 2020**

Investors listed **6**

## Funding filed with regulators

Refeyn filed one raise, $214K in all. Filings say how much was sold and to how many investors; they never name the investors.

- Jul 2026 **$214K** UK share allotment

## On a portfolio page

Investors who name them

- [Oxford Technology Management](https://millionrounds.com/fund/oxford-technology-management)

Each firm lists Refeyn on its own website. That is the firm's claim, a weaker thing than a round we watched, but a named source.

## The company, in detail

What they build

Known for

health care biotherapeutic development biotechnology research single molecule measurement mass calibration standards oligomeric state determination calibrants electromedical gmp compliance rapid dilution microfluidics capsid loading analysis label-free analysis hospital & health care biomolecular analytics medical protein-protein interactions

Built with from their website

Azure Devops Qt Atlassian OpticStudio Posit GitHub Gem CSS LiDAR Atlassian Confluence

+8 more

ETQ Reliance QMS LinkedIn Learning PyTorch Apple Business Manager NetSuite KnowBe4 Twilio SendGrid Email Marketing Campaigns SourceTree

- **Sector:** Research
- **Industry code:** NAICS 541714, 334516, SIC 3824
- **Region:** England
- **Revenue:** 26M a year, as listed
- **Full record:** [Every detail in the company directory](https://millionrounds.com/directory/refeyn)

## Research in United Kingdom

Startups like it

- [**Isomorphic Labs** London · founded 2021 *Raised*](https://millionrounds.com/company/isomorphic-labs)
- [**Basecamp Research** London · founded 2019 *Raised*](https://millionrounds.com/company/basecamp-research)
- [**Callosum** London · founded 2025 *Raised*](https://millionrounds.com/company/callosum)
- [**Artios** Babraham · founded 2016 *Raised*](https://millionrounds.com/company/artios)
- [**First Light Fusion** Yarnton · founded 2011 *Raised*](https://millionrounds.com/company/first-light-fusion)
- [**IMU Biosciences** London · founded 2019 *Raised*](https://millionrounds.com/company/imu-biosciences)
- [**Orbital Industries** London · founded 2022 *Raised*](https://millionrounds.com/company/orbital-industries)
- [**Genomics** Oxford · founded 2014 *Raised*](https://millionrounds.com/company/genomics)

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