Precision-engineered Synthetic Cell Mimics™
Reproducible. Comparable. Data You Can Trust.


Leave behind the unpredictability of biological cells and the limitations of polystyrene beads. Our cell mimics provide greater stability and accuracy across the board:
Our polymer-based cell mimics are fully customizable, engineered to replicate specific cellular characteristics for precise control in every assay.

TruCytes™ Biomarker Controls
Mimic and quantify specific cell types and their functions with customizable proteins.

ViaComp Cell Health Controls
Assess cell viability with controls for DNA intercalating and amine-reactive dyes.

SpectraComp Compensation Controls
Achieve superior compensation and unmixing controls, staining like real cells.

FlowCyte Calibration Controls
Set new standards for instrument calibration and traceability.
Slingshot Bio cell mimics consistently outperform traditional controls — such as those that come from blood specimens or solid-core plastic beads — across fluorescence, light scattering, and biomarker compatibility. No cell culture, no donor variability—just ready-to-use reliability.

Biological Controls

Polystyrene Beads


See how Slingshot and Cerba Research worked together to develop cell mimics for Ki-67, a critical protein in cancer research. With our mimics, Cerba validated assays with greater accuracy and reduced variability compared to live cells.
“We’ve integrated Slingshot cell mimics as crucial controls in several of our flow cytometry workflows. Whether in assessing cell viability or managing compensation and unmixing, these off-the-shelf controls seamlessly slot into our processes. This enhances our workflow efficiency without having to compromise on data quality and reliability.”
Dr. Veronica Nash | US Regional Head of Flow Cytometry
Cerba Research

See how we helped Prolocor design the ideal control for their platelet FcγRIIa precision diagnostic test that quantifies FcγRIIa on the surface of platelets to guide clinical decision making.
“Clinicians need better tools to guide decision making on the choice of antiplatelet therapy in coronary artery disease patients, particularly after coronary stenting. The Prolocor pFCG® test will be an important asset as we tailor antiplatelet therapies to balance thrombotic and bleeding risk.”
Dominick J. Angiolillo, MD, PhD, FACC, FESC, FSCAI | Professor of Medicine, Chief, Division of Cardiology, Director, Thrombosis Research Center
University of Florida, College of Medicine-Jacksonville.

See how we partnered with Fred Hutch CPF QC to engineer custom CD3 T cell mimics with varying percentages of expression of the common CAR transduction marker epidermal growth factor receptor (EGFR) to validate their CAR T cell flow cytometry assays.
“In our search for reliable controls for cell therapy assays, partnering with Slingshot has been a game-changer. Together, we addressed significant challenges by engineering custom CD3 T-cell mimics.”
Amina Kariminia, Ph.D. | Immunologist, Analytical Development Scientist
Fred Hutch Cancer Center
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At Slingshot Biosciences, we recognize that each research project may require tailored solutions. Our custom biomarker offerings allow researchers to specify their unique requirements, ensuring that the TruCytes™ align perfectly with their assay validation needs.
By collaborating closely with our clients, we can engineer bespoke TruCytes™ that incorporate specific proteins and characteristics, enhancing the accuracy and relevance of their research outcomes. This customization process is designed to meet the diverse demands of various scientific fields, from oncology to immunology.
TruCytes™ have been developed to address the limitations of traditional biomarker controls, such as those derived from human blood or synthetic materials. Their precision-engineered design ensures superior performance in fluorescence, light scattering, and biomarker compatibility, making them a preferred choice for researchers.
Numerous studies have demonstrated that TruCytes™ consistently outperform conventional controls, leading to more reliable assay results. This reliability is crucial for researchers who depend on accurate data to inform their studies and clinical applications.
The applications of TruCytes™ span a wide range of scientific disciplines, including drug development, diagnostics, and clinical trials. Their robust design allows for effective assay validation, quality assurance, and improved reproducibility across various experimental setups.
Researchers have utilized TruCytes™ in numerous studies to enhance the reliability of their findings. For instance, they are instrumental in validating new therapeutic approaches in cancer research, where precision and accuracy are paramount.
Slingshot Biosciences is committed to supporting researchers through comprehensive resources and expert guidance. Our website features a dedicated section for accessing technical data, certificates of analysis, and educational materials that facilitate the effective use of TruCytes™.
In addition to product information, we offer webinars and case studies that provide insights into best practices and innovative applications of our biomarker controls. This wealth of resources ensures that researchers have everything they need to achieve their scientific goals.