Corporate · Global B2B
Evidence & Publications

Verification and validation first — built on our CE-marked, EU-IVDR platform.

Direct-to-slide cryofixation, multiplex immunostaining, and digital review — verified at the bench and validated in independent clinical studies.

Regulatory status: Cryosuite platform, Cryophore™ multiplex panels, and their reagents are EU-IVDR registered (Class A). Specific panel regulatory status varies by market — please contact us for current documentation.

What it is

Next-Generation Cytology — hardware, reagents, software, and panels.

A cytology-first platform architecture for routine use. Same-day, multi-biomarker diagnostics on minimally invasive samples — without cell-block preparation or sequential staining.

Cryofixation™ hardware

Controlled cryo-environment processing preserves cellular morphology and antigen integrity directly on the slide — eliminating the cell-block dependency.

Cryoimmunostaining™ reagents

Proprietary fluorophore-conjugated antibody chemistry engineered for 8-channel simultaneous staining with minimal spectral crosstalk.

Cryophore™ multiplex panels

Pre-configured, expert-vetted panel compositions covering effusion and FNA cytology. Pleural Fluid 1/2/3, Ascitic Fluid, and a growing pipeline.

Digital evaluation software

Sub-30-second slide digitisation, multi-channel single-cell viewer, on/off channel toggling, customisable merge view. AI-ready architecture.

HOW IT WORKS

From minimally invasive specimen to digital read-out in a consolidated workflow.

A linear, single-pass workflow that replaces multi-day serial IHC iteration with same-day multiplex evaluation.

01

Monolayer sample

Effusion or FNA cytology specimens. Wet monolayers, smears, imprints, or frozen sections — upstream-agnostic. No cell-block preparation required.

02

Cryofixation™

Controlled cryo-environment preserves morphology and antigen integrity. Minimises non-specific binding. Sample remains compatible with downstream NGS.

03

Cryoimmunostaining™

Single-pass, 8-channel simultaneous immunofluorescence using the chosen Cryophore™ panel. No iterative re-staining cycle.

04

Digital evaluation

Sub-30-second whole-slide digitisation. Multi-channel single-cell viewer with on/off toggling and merge views. Read-out accessible from any workstation.

What it provides

Built for the multi-marker era of precision oncology.

Designed to support standardised cytology workflows where every biomarker counts and sample material is scarce.

Same-day multiplex

8 biomarkers from a single slide in under four hours — replacing 24-48-hour single-marker cycles.

Tissue conservation

100 % of the remaining specimen is preserved for downstream NGS and molecular profiling. No iterative depletion.

Native IVD workflow

Cytology-first design — not an off-label workaround of histology IHC. EU-IVDR registered platform and Class A panels.

No cell-block dependency

Direct-to-slide cryofixation removes the upstream cell-blocking step that wastes time and material in conventional workflows.

Standardised panels

Expert-vetted Cryophore™ panels deliver reproducible multiplex performance across labs and operators. No bespoke validation per case.

AI-ready digital read-out

Single-cell viewer with channel-level controls. 30 000+ manually annotated cells form an AI-ready dataset for image-assisted interpretation.

Why it matters

Serial IHC vs. X-ZELL — at a glance.

Reference: cell-block + sequential immunohistochemistry / immunocytochemistry, the prevailing multi-marker workflow.

Serial ICC/IHC

Reference workflow

1 biomarker per slide · 24-48+ hours per iteration · material depletion at every step · manual microscopy review · non-standardised workaround for cytology · IVDR-restricted off-label use.

X-ZELL Next-Generation Cytology

Same-day multiplex

8 biomarkers per slide · 3-4 hours end-to-end · minimal material consumption · digital multi-channel review · cytology-first architecture · EU-IVDR registered (Class A) platform + panels.

Operational metrics

Same-day multiplex, vs. cell-block + sequential ICC/IHC.

Comparative metrics from independent evaluations. Reference workflow: cell-block + immunohistochemistry / immunocytochemistry.

Sensitivity

+112% improvement in detection sensitivity vs the reference workflow.

Turnaround

−92% reduction in time-to-result, enabling same-day clinical decisions.

Hands-on time

−49% less laboratory hands-on time per case.

Data per slide

+700% biomarker data extracted from a single specimen — 8-channel multiplex.

True positives

+64% more true-positive identifications across the evaluated cohort.

Non-diagnoses

−100% non-diagnostic cases. No first-pass diagnostic ambiguity in this cohort.

Analytical verification

An uncompromising verification funnel.

Every antibody entering the X-ZELL portfolio survives a multi-stage wet-lab and computational verification process.

378

Antibody clones screened

Commercially available clones evaluated for relevance, specificity, and multiplex compatibility.

91

Strictly qualified antibodies

Survived wet-lab stress-testing and computational cross-checks. Ready for clinical use.

0

Cross-reactivity

Verified zero cross-reactivity across the qualified portfolio.

04

Lineage segregation

Clean, unambiguous results in every multiplex panel configuration.

Clinical concordance

Concordance findings should be read with the source validation context.

Real-world validation across 246 mixed effusion and FNA specimens at two independent German cytopathology institutes, under IVDR standards.

246 mixed samples

Routine effusion and FNA specimens collected at two independent cytopathology institutes in Germany.

191 QC-passed slides

~22% baseline QC exclusion — a real-world figure reflecting routine FNA imprint variability, not a laboratory ideal.

Concordance context

Review the current validation report, specimen context, and comparator method before using performance statements in evaluation or implementation decisions.

Real-world impact

St. Elisabeth & St. Barbara Krankenhaus, Halle/Saale.

Intra-operative fine-needle workflow: the X-ZELL platform replaces single-marker, 24-hour ICC turnaround with same-day 7-channel multiplex.

7× biomarker data per case

Using the Cryophore™ Pleural Fluid 1 and Pleural Fluid 2 panels in routine intra-operative use.

< 4 h digital read-out

Multi-channel digital evaluation accessible from any workstation, replacing manual microscopy review.

~20 h saved per patient

Eliminates the iterative repeat-staining loop; no repeat procedures across evaluated cases.

Adoption & evidence base

Independent footprint behind the data.

5 European sites

Beta evaluation and clinical validation at independent academic and clinical institutes across Germany, Croatia and Slovenia.

18 publications

Peer-reviewed publications and international conference contributions covering platform chemistry, panel design, and clinical performance.

30,000 annotated cells

Manually annotated single-cell dataset forming the AI-ready foundation for image-assisted interpretation.

8 advisory experts

Independent international expert committee — multiple WHO guideline contributors, on the Cryophore™ panel design board.

Peer-reviewed evidence

Selected publications underpinning the platform.

Miceska, S., Kholová, I., & Kloboves Prevodnik, V. (2026). Acta Cytologica, 1–28. DOI: 10.1159/000550736

Bhakdi, S. C., Walch, D., Fives, C., Grote, S., Hunfeld, K. P., & Battmann, A. (2025). 22nd International Congress of Cytology, 1–94.

Bhakdi, S. C., & Battmann, A. (2023). Cytopathology, 34(S1), 5–55. DOI: 10.1111/cyt.13293

Bhakdi, S. C., & Thaicharoen, P. (2018). Methods and Protocols, 1(2), 1–11. DOI: 10.3390/mps1020020

Grote et al. (2026). Manuscript submitted. Operational metrics & diagnostic performance vs. cell-block + ICC/IHC.

Battmann et al. (2026). Data evaluation — diagnostic concordance and true-positive yield.

Regulatory & quality

Built to clinical-grade standards.

ISO 13485:2016

Quality management system certified. Manufacturing under formal QMS, with lot-level traceability per batch.

EU-IVDR registered

Cryosuite hardware + software + Cryophore™ panels and reagents are EU-IVDR registered (Class A).

FDA-registered platform

Hardware, software and consumables are FDA-registered for the US market. International IP and EUDAMED registration in place.

PUBLIC EVIDENCE

Selected publications and platform evidence.

A concise evidence layer for cytology laboratories evaluating multiplex cryoimmunostaining. Details should be interpreted in the intended specimen and regulatory context.

Acta Cytologica · 2026

Multiplex Cryoimmunostaining in FNAB and Effusion Samples: Preliminary Results

Miceska, Kholová, Kloboves Prevodnik

Peer-reviewed preliminary evaluation of multiplex cryoimmunostaining on routinely prepared cytospin samples from fine-needle aspiration biopsies and effusions.

Read article
Acta Cytologica · 2025

Multiplexed Effusion Immunodiagnostics in Routine Cytopathology

Bhakdi, Fives, Grote, Battmann

Conference abstract listed in X-ZELL resources, relevant to effusion cytology workflows and routine-laboratory evaluation.

View resources
ECC · 2024

Cryoimmunostaining as a new method in cytological diagnostics of effusions

Battmann

Public X-ZELL news describes interim German study data comparing NGC with conventional cell-blocking and IHC approaches for minimally invasive samples.

Read summary
Methods & Protocols · 2018

Crosstalk-free detection of seven fluorophores in widefield fluorescence microscopy

Bhakdi & Thaicharoen

Foundational publication referenced by X-ZELL for multi-channel fluorescence detection, relevant to the technical rationale for multiplex review.

See literature list
Resources

Technical and commercial resources.

Shortcuts for teams evaluating workflow fit, panel availability or technical documentation.

X-ZELL brochure

A concise visual overview of the platform, intended as a first-pass resource for internal evaluation.

Open brochure

Application glossary

Definitions for Cryoimmunostaining™, Cryophore™, Hybrid Microscope and Next-Generation Cytology.

View glossary

Regulatory documentation

Product availability, intended use and regulatory status vary by market. Request current documentation before procurement.

Request dossier
Talk to the team

Need the full evidence dossier?

Our scientific liaison team can provide the complete analytical and clinical validation data, peer-reviewed publications, and IVDR documentation under NDA for qualified institutions.