Refeyn

Refeyn

Bench-top mass photometry for single molecules

About Refeyn

Simplify's Rating
Why Refeyn is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Data & Analytics

Enterprise Software

Biotechnology

Company Size

51-200

Company Stage

Series A

Total Funding

$30M

Headquarters

Oxford, United Kingdom

Founded

2018

Overview

Refeyn specializes in mass photometry, a technique that measures the mass of single molecules in their native, unlabeled state. Its products are compact bench-top instruments coupled with automated software that enables rapid mass analysis from only a few microliters of sample. Researchers can obtain mass distributions in minutes without prior knowledge or labeling. The company differentiates itself through its native-state, label-free approach, user-friendly bench-top systems, and integrated software that streamlines data acquisition and interpretation, making advanced biomolecule analysis accessible to academic labs, research centers, and pharmaceutical companies. Refeyn aims to advance bioanalytics by providing practical mass measurement tools that uncover biomolecular properties and functions with minimal setup and sample requirements.

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Simplify's Take

What believers are saying

  • AI-driven drug discovery expansion drives demand for pre-screening tools like MyMass.
  • Gene therapy manufacturing growth positions KaritroMP as critical AAV quality control.
  • 500th global installation across 30+ countries validates market penetration and adoption.

What critics are saying

  • Cryo-EM vendors integrate sample quality assessment, eliminating MyMass standalone value.
  • Competitors commoditize mass photometry with lower-cost single-particle alternatives within 18–24 months.
  • Pharma consolidation standardizes on incumbent platforms, causing post-acquisition customer churn.

What makes Refeyn unique

  • Label-free single-molecule mass measurement without inference from hydrodynamic radius.
  • MyMass compact instrument addresses sample quality bottleneck in cryo-EM and structural biology.
  • StreamlineMP automates high-throughput mass photometry data analysis for pharmaceutical workflows.

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Funding

Total Funding

$30M

Above

Industry Average

Funded Over

1 Rounds

Series A funding typically happens when a startup has a product and some customers, and now needs funding to scale. This money is usually used to grow the team, expand marketing, and improve the product. Venture capital firms are frequently the main investors here.
Series A Funding Comparison
Above Average

Industry standards

$15M
$8.2M
Discord
$15M
Canva
$30M
Kalshi
$30M
Refeyn

Benefits

Health Insurance

401(k) Company Match

Unlimited Paid Time Off

Family Planning Benefits

Professional Development Budget

Hybrid Work Options

Wellness Program

Growth & Insights and Company News

Headcount

6 month growth

4%

1 year growth

3%

2 year growth

4%
Postmedia Network
Mar 18th, 2026
Refeyn launches MyMass instrument to simplify sample quality assessment for structural biology.

Refeyn launches MyMass instrument to simplify sample quality assessment for structural biology. GlobeNewswire Published Mar 18, 2026 Article content Compact, all-in-one mass photometer helps researchers verify sample quality before proceeding to cryo-EM, native MS, BLI, SPR, and other costly experiments Article content OXFORD, United Kingdom, March 18, 2026 (GLOBE NEWSWIRE) - Refeyn, developer of pioneering mass photometry technology, announces the launch of MyMass(TM) mass photometer (MyMassMP), a compact instrument designed to answer a critical research question: Is the sample good enough for further analysis? Article content Structure-based drug design and AI-driven therapeutic development are transforming how new medicines are discovered, but depend on high-quality samples. Structural and biophysical workflows, such as cryo-EM, native mass spectrometry (MS), bio-layer interferometry (BLI), and surface plasmon resonance (SPR), are time-consuming and costly, and poor sample quality remains one of the main reasons they fail. MyMassMP gives researchers a fast, accurate assessment of purity, homogeneity, and oligomerization state in solution before committing to resource-intensive experiments. Article content Advertisement 1 Story continues below Article content Built on the same proven technology as Refeyn's TwoMP mass photometer, which is already trusted across leading structural biology and biotherapeutics labs worldwide, MyMassMP brings this quality check capability into a simpler, self-contained benchtop instrument. Featuring an integrated display and computer for onboard data analysis, and dedicated consumables, it offers an intuitive workflow from sample to result. Article content Top Stories Interested in more newsletters? Browse here. Article content "Structural biology and AI-driven drug discovery are moving fast, but they're only as good as the samples that drive them. MyMass directly addresses that challenge and marks a significant step forward for Refeyn, putting the power of mass photometry within reach of more researchers than ever before," said Gerry Mackay, Refeyn CEO. Article content Fiona Coats, Chief Product and Marketing Officer at Refeyn, said: "In recent years, our users have consistently shown us how valuable mass photometry is for quickly assessing sample quality before committing to more complex experiments. With MyMassMP, we're making this capability even more accessible - empowering researchers to confidently answer a simple but critical question: Are my samples ready?" Article content Advertisement 2 Story continues below Article content About Refeyn Article content Refeyn (www.refeyn.com) specializes in the development, production, and distribution of mass photometry for industry and academia. Enabling accurate mass measurement of single molecules in their native state, and without labels, Refeyn's products deliver crucial analytics faster and use less sample than conventional methods. The company's vision is to accelerate discovery through innovation, empowering the latest scientific breakthroughs in basic research and transforming biotherapeutic development and manufacturing. Article content Advertisement 1 This advertisement has not loaded yet.

PharmiWeb.com
May 7th, 2025
Major Mass Photometry Milestone Achieved By Refeyn With 500Th Installation Globally

Over 1,000 scientific citations highlight the unique bioanalytical workflow capabilities of mass photometry systems now installed in 30+ countries. Refeyn’s TwoMP mass photometer and MassFluidix HC system newly installed at the University of Copenhagen in action with Dr. Anni Kumari. For a high-resolution image, please contact [email protected]

BioTechniques
Dec 4th, 2024
Biotech bi-weekly: New bioink for light-based bioprinting, evolving software for drug discovery, mass photometry and multiomics data analysis

Refeyn (Oxford, UK), a mass photometry technology company, has developed a custom software platform providing automated analysis of large mass photometry data, called StreamlineMP.

PharmiWeb.com
Nov 26th, 2024
Refeyn Launches Software Platform To Automate Mass Photometry Analysis Workflows

Refeyn launches software platform to automate mass photometry analysis workflows. New StreamlineMP software suite offers specialized data analysis modules to standardize and speed up workflows in key bioanalytical applications

PharmiWeb.com
Jun 7th, 2024
New Us Headquarters Opened By Mass Photometry Pioneers Refeyn

Oxford, UK (June 6, 2024) – Refeyn, the company behind pioneering mass photometry technologies, has officially opened its new 10,000 sq. ft. US Headquarters and Customer Interaction Center in Waltham’s Biotech Hub in Greater Boston, Massachusetts. Refeyn CEO Gerry Mackay – along with two members of the sales team and one of the company’s co-founders, Prof. Philipp Kukura – helped to cut the ribbon at the opening event. Philipp Kukura led the research team that invented mass photometry, a unique light-based bioanalytical tool for rapid, single-particle analysis

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