Fluxion Biosciences

Circulating Tumor Cell Analysis

The IsoFlux System is now available from Millennium Science


The IsoFlux System enables molecular analysis of circulating tumor cells (CTCs) and other rare cell types. Using Fluxion's proven microfluidic technology, the platform recovers CTCs from biological samples with the highest level of sample integrity. The recovered cells move immediately to downstream molecular analysis including mutation detection, next-generation sequencing, and gene expression.

IsoFlux CTC

See what sets IsoFlux apart…

Highest CTC Recovery:
Independent data has shown superior target cell recovery compared to currently-available cell enrichment devices.

Most Flexible System:
Have your own isolation marker? Want the flexibility to add in multiple capture antibodies? IsoFlux makes it easy to define your own criteria using open access bead chemistry.

Superior Sample Integrity:
Good analysis starts with a high quality sample. In addition to high levels of recovery, IsoFlux samples have low background, low elution volume, and high viability.

Diverse Analysis Options:
Analysis of CTCs requires multiple downstream techniques to look at DNA, RNA, and protein. IsoFlux samples come out of the instrument ready to use in the most common platforms such as arrays, qPCR, and next-generation sequencing.


Backed by a proven microfluidic technology platform.

The IsoFlux System uses proprietary CellSpot Technology to deliver enriched cells in a format ideal for next generation molecular applications. CellSpot increases the purity, integrity, and yield of isolated cells, while also making them easy to access for use in downstream applications.


A tube (7.5-10mL) of peripheral blood is collected and sent to processing site. The blood is centrifuged against a density gradient and PBMC layer is retrieved. Immunomagnetic particles are added to the sample that target the cells of interest.

Not just limited to EpCAM…IsoFlux samples can be processed with one or multiple isolation markers defined by the user.

The sample is then transferred into a microfluidic cartridge. The sample flows from the inlet well across an isolation zone, where the target cells are sequestered. The remaining non-target cells flow into a waste reservoir.

IsoFlux CTC Target Cell Isolation2. TARGET CELL ISOLATION

Within the isolation zone, the sample flows up into a cavity. A permanent magnet is placed on the roof of the channel to attract the labeled target cells.

The uniformity of the laminar flow profile and magnetic field gradient ensures high cell recovery & minimal background contamination.

IsoFlux CTC Sample Recovery3. SAMPLE RECOVERY

Once the target cells are captured and washed, the disc that forms the roof of the channel is removed from the cartridge inside the instrument. The target cells are aspirated and transferred into a microfuge tube for further analysis. This approach is optimal for molecular analysis because the cell recovery off of the chip is high (>90%) and the dilution volume is very low (<20uL).


The enriched sample is immediately ready for downstream analysis usingmicroscopy, PCR, qPCR, FISH, NGS, and microarrays.


Delivering the highest quality samples into a diverse range of applications

The IsoFlux System enables a wide variety of applications across biomarker discovery, translational medicine,and clinical research. Each application benefits from the high quality samples produced by the platform: high target cell recovery, high viability, minimal background cells, and low elution volume.

IsoFlux samples move directly to downstream assays: IsoFlux circulating tumour cell isolation

  • Mutational analysis - PCR, qPCR, sequencing
  • Genomic analysis - next-generation sequencing (NGS), microarrays
  • Cytogenetics - FISH
  • Gene expression - qPCR, RNA-ISH
  • Protein analysis - immunoassays, immunofluorescence microscopy
  • Enumeration - immunofluorescence microscopy, histolog

The IsoFlux System meets the needs of:

  • Clinical and life science researchers
  • Pharmaceutical and biotechnology companies
  • Diagnostic developers
  • CRO and service laboratories
  • Analytical platform developers (e.g. PCR, NGS, FISH)

IsoFlux isolates rare cells from several types of starting biological samples, including:

  • Peripheral whole blood
  • Apheresis collection (fresh or frozen)
  • Fine needle aspirates
  • Bone marrow aspirates
  • Tissue dissociations

About Fluxion Biosciences

By characterizing molecular and cellular mechanisms in physiologically relevant micro-environments, Fluxion helps bridge the translational medicine gap by bringing research data closer to patients. Our innovative systems for live cell analysis are enabling rapid advances in disease research, drug discovery, and the development of diagnostic tests.

Fluxion is led by an experienced team of professionals from the bioanalytical tool industry. The Board of Directors comprises senior executives and investors representing some of the leading biotech and technology companies in the industry.

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