RapidScan-Dual Lateral Flow Assay Development System by PACIFICIMAGE

Overview

The RapidScan-Dual Lateral Flow Assay Development System is a dedicated, benchtop optical imaging platform engineered for quantitative and semi-quantitative development, optimization, and quality control of lateral flow immunoassays (LFIA). Unlike general-purpose gel documentation systems, the RapidScan-Dual integrates hardware and software co-designed specifically for strip-based diagnostics—supporting both colloidal gold and fluorescent label detection modalities with calibrated optical path geometry, uniform illumination, and high-fidelity signal capture. Its core measurement principle relies on reflectance densitometry: the system captures grayscale or RGB intensity profiles across defined test (T) and control (C) line regions, converting pixel intensity values into optical density (OD) units traceable to NIST-calibrated reference standards. This enables reproducible, operator-independent quantification essential for assay validation under ISO 13485, CLIA, and FDA guidance for in vitro diagnostic (IVD) device development.

Key Features

• Dual-mode optical detection: switchable white-light LED (for colloidal gold) and UV excitation (365 nm) with bandpass-filtered emission collection (for quantum dot or europium chelate labels)
• Compact CMOS imaging module (10.8 × 9.4 × 17 cm; 700 g) powered via USB 2.0—no external power supply required
• Fixed-focus f/6 lens optimized for 0.5–2.0 mm line width resolution at 1:1 magnification across standard LFIA strip dimensions (300 × 5 mm)
• 10-bit analog-to-digital conversion ensures linear signal response across 0–3.6 OD dynamic range, validated per ISO 15197:2013 Annex C protocols
• Modular cassette adapter system accommodates diverse formats: single-line strips, multi-T-line cards, multiplexed lateral flow devices (LFDs), and custom cartridge geometries
• Embedded real-time exposure optimization algorithm prevents saturation in high-intensity control lines while preserving low-signal T-line resolution

Sample Compatibility & Compliance

The RapidScan-Dual supports all common lateral flow substrates—including nitrocellulose, polyester, and cellulose acetate membranes—as well as conjugate pads, sample pads, and absorbent pads used in IVD manufacturing. It complies with analytical performance requirements outlined in ISO 20945:2013 (in vitro diagnostic medical devices — evaluation of analytical performance of quantitative measurement procedures) and supports GLP-compliant audit trails when used with Rapid Test View PRO Software v3.2+. All image acquisition parameters (exposure time, gain, illumination mode, ROI coordinates) are digitally logged and exportable in CSV/JSON format for regulatory submission packages. The system meets electromagnetic compatibility (EMC) Class B requirements per CISPR 32 and electrical safety standards IEC 61010-1:2010.

Software & Data Management

Rapid Test View PRO Software is a Windows-based application designed for R&D and QC laboratories operating under GxP frameworks. It provides three integrated modules: (1) Profile Setup Wizard—configures C/T line detection zones, multi-channel alignment, exposure presets, and label-specific illumination profiles; (2) Assay Parameter Editor—defines cut-off algorithms, semi-quantitative scoring logic (e.g., T/C ratio, delta-T), calibration curve models (linear, 4PL, 5PL), and batch metadata fields compliant with ISO 11737-1 traceability requirements; (3) QR Code Engine—generates ISO/IEC 18004-compliant QR codes embedding assay-specific parameters (lot number, expiration date, standard curve coefficients, LOD/LOQ values), enabling seamless instrument-side parameter auto-loading during routine testing. All software operations support 21 CFR Part 11-compliant electronic signatures, user role-based access control, and immutable audit logs.

Applications

• Development and optimization of rapid antigen tests for infectious disease diagnostics (e.g., SARS-CoV-2, influenza A/B, RSV)
• Quantitative validation of veterinary point-of-care assays targeting pathogens such as Feline Leukemia Virus (FeLV) or Canine Parvovirus
• Semi-quantitative food allergen screening (e.g., peanut, gluten, soy) per AOAC SMPR 2021.002 specifications
• Performance verification of environmental toxin detection kits (aflatoxin B1, ochratoxin A) against ISO/IEC 17025-accredited reference methods
• Stability studies tracking signal decay kinetics under accelerated aging conditions (ICH Q5C)
• Manufacturing process transfer support, including line-to-line consistency analysis across production batches

FAQ

Does the RapidScan-Dual support fluorescence detection with near-infrared (NIR) dyes?
No—the system is configured for visible-range fluorescence (e.g., europium chelates, quantum dots emitting at 520–650 nm) and does not include NIR excitation sources or detection filters.
Can Rapid Test View PRO export raw image data in TIFF format for third-party analysis?
Yes—acquired images are saved in lossless 10-bit TIFF format with embedded EXIF metadata, including exposure settings, lens ID, and calibration timestamp.
Is the system compatible with LIMS integration?
Yes—via RESTful API interface (available in v3.2+), supporting automated result push to LabVantage, Thermo Fisher SampleManager, and other ISO/IEC 17025-compliant LIMS platforms.
What calibration standards are recommended for routine verification?
PACIFICIMAGE supplies NIST-traceable step tablets (0.0–3.0 OD) and certified lateral flow reference strips with assigned T-line intensities for daily system suitability checks per ISO 15197:2013 Clause 6.3.
How is firmware updated?
Firmware updates are delivered through Rapid Test View PRO’s built-in updater module and require no hardware modification or service engineer visit.