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- X100/X100HT with Full Field Peripheral Blood Smear (PBS) Application
Pathology · Digital cell morphology (peripheral blood smear)
X100/X100HT with Full Field Peripheral Blood Smear (PBS) Application
Scopio Labs, Ltd.
Scopio's Full Field PBS application is the digitisation play in haematology morphology: scan the whole clinically relevant region of a blood smear at high resolution, then let AI pre-classify the differential for a technologist to verify. A three-clearance FDA lineage (2020, 2022, 2025) has extended it from a single-slide scanner to a high-throughput loader and, most recently, to AI grading of 23 red-cell parameters. The multicentre validation behind the first clearance is manufacturer-affiliated; an independent Italian evaluation published in 2026 confirms strong correlation with manual microscopy for routine differentials while finding standalone abnormal-cell detection only moderate — a result that keeps the expert reviewer firmly in the loop.
Performance Metrics
Clinical Evidence
The foundational evidence is the multicentre method comparison by Katz and colleagues (International Journal of Laboratory Hematology, 2021), conducted at Tel Aviv Sourasky Medical Center, the University of Pennsylvania and Brigham and Women's Hospital. The study analysed 645 peripheral blood smears — 335 normal and 310 abnormal, drawn from patients with a range of clinical conditions — against manual microscopy as the reference method. Reported white-blood-cell performance was 96.3 percent classification efficiency with 87.9 percent sensitivity and 97.6 percent specificity, and red-cell morphology agreement of 99.8 percent, with high correlation across tested parameters. The study should be read as manufacturer-affiliated: the first author discloses a consultancy to Scopio Labs. The independent check arrived with De Iuliis and Chiatamone Ranieri (International Journal of Laboratory Hematology, February 2026), a single-centre evaluation of the X100HT at G. Mazzini Hospital in Teramo, Italy, on 400 smears from the routine workload — 40 from healthy individuals and 360 selected under criteria aligned with international consensus-group review guidance. Correlation with manual microscopy was strong for neutrophils and lymphocytes (r = 0.93) and moderate for eosinophils (r = 0.80). The more consequential finding concerns standalone detection of pathological cells: ROC analysis put the system's unaided accuracy for blasts at an AUC of 0.72, immature myeloid cells at 0.79 and nucleated red blood cells at 0.71 — moderate figures that improved with expert review. The honest reading across both studies is of a reliable digitisation and pre-classification layer for the routine differential whose flagging of abnormal cells is a screen, not a verdict; the qualified reviewer remains the diagnostic step.
| Study | Design | n | Sensitivity | Specificity | AUC | Published |
|---|---|---|---|---|---|---|
| Katz BZ, Feldman MD, Tessema M, Benisty D, Toles GS, Andre A, Shtreker B, Paz FM, Edwards J, Jengehino D, Bagg A, Avivi I, Pozdnyakova O (Tel Aviv Sourasky / University of Pennsylvania / Brigham and Women's; manufacturer-affiliated) | ProspectiveProspective | 645 | 87.9% (WBC classification) | 97.6% (WBC classification) | — | Int J Lab Hematol 2021;43(6):1408–1416 (PMID 34546630; DOI 10.1111/ijlh.13681). Multicenter method comparison of the X100 Full Field PBS against manual microscopy on 335 normal and 310 abnormal smears; RBC morphology agreement 99.8%. Manufacturer-affiliated: the first author discloses a consultancy to Scopio Labs. |
| De Iuliis V, Chiatamone Ranieri S (G. Mazzini Hospital, Teramo, Italy; independent) | ProspectiveProspective | 400 | — | — | 0.71–0.79 (standalone abnormal-cell detection) | Int J Lab Hematol 2026;48(1):54–62 (PMID 40947947; DOI 10.1111/ijlh.70005). Independent single-centre evaluation of the X100HT on 400 routine-workload smears (40 healthy, 360 selected per consensus-group-aligned criteria). Correlation with manual microscopy r = 0.93 for neutrophils and lymphocytes, r = 0.80 for eosinophils; standalone AUC 0.72 for blasts, 0.79 for immature myeloid cells, 0.71 for nucleated red cells, improving with expert review. |
Inside the algorithm
Editorial featureHow Full Field PBS reaches a differential.
Five stages — from raw input to verdict — drawn from manufacturer documentation and the public regulatory record.
- INGEST
- NORMALISE
- DETECT
- LOCALISE
- VERDICT
Stage 01 · INGEST
A stained smear enters the scanner — one slide or a cassette.
The input is the haematology laboratory's ordinary artefact: a fixed, stained peripheral blood smear. On the X100 an operator loads slides individually; on the high-throughput X100HT a slide loader feeds cassettes of slides into the scanner automatically, which is the configuration built for higher-volume laboratories.
From here the workflow is digital. The instrument scans the smear at high resolution across the clinically relevant region rather than photographing a limited set of pre-selected cells.
Input
Stained peripheral blood smear
Inside the Auris+ Listing
Five more sections complete this device’s Auris+ Listing.
Decision Ledger
ProPro unlocks a private, cross-vendor log of every case you read on this device — what the AI called, what you concluded, and a one-line reason if you overrode it. Ready for the EU AI Act's deployer logging obligations when they land in 2028.
Clinical Evidence Deep Dive
ProPro unlocks the structured clinical-evidence summary — study count, target patient population, and a tabular accuracy-metrics view drawn from peer-reviewed sources.
Peer-Reviewed Publications
ProPro unlocks the curated peer-reviewed publication list with PubMed cross-links — the citation backbone of every editorial verdict.
Post-Market & Regulatory Conditions
ProPro unlocks the post-market surveillance summary, recall record, and the conditions of approval that bound real-world use.
AI Algorithm Version History
ProPro unlocks the chronological record of algorithm version changes — what changed when, drawn from manufacturer changelogs and regulatory filings.
Regulatory Approvals
Class B
Safety Record
No recall, FDA safety communication or adverse-event cluster attributable to the X100, X100HT or the Full Field PBS application was located in indexed public sources as of August 2026. The FDA's MAUDE and enforcement databases could not be queried directly from this environment, so that absence is "none found in public reporting" rather than an exhaustive register audit. The cleared design bounds the risk surface: the application locates, displays and pre-classifies cells but issues no autonomous result — a qualified laboratory professional verifies the differential, the red-cell grading and the platelet estimate before any report leaves the laboratory. Procurement reviewers should note that the independent 2026 evaluation found standalone abnormal-cell detection only moderate (AUC 0.71–0.79 across blasts, immature myeloid cells and nucleated red cells), which underlines that laboratories cannot treat the pre-classification as a substitute for expert smear review.
Intended Use & Indications
The Full Field Peripheral Blood Smear application runs on two Scopio imaging platforms: the X100, where slides are loaded individually, and the high-throughput X100HT, whose slide loader feeds cassettes of slides into the scanner automatically. Both digitise the smear at high resolution across the full scan region rather than imaging a limited set of pre-selected cells, and both present the resulting full-field scan alongside AI decision support: a pre-classified white-blood-cell differential, red-blood-cell morphology grading and a platelet pre-estimate. The application is an assistive tool for haematology laboratories — it does not issue autonomous results. A qualified laboratory professional verifies each pre-classification, completes the morphological assessment and signs the report, either at the instrument or from a remote workstation on the laboratory's network.