DreTop DTPN-1400SX Colloidal Gold Immunochromatographic Analyzer

Overview

The DreTop DTPN-1400SX Colloidal Gold Immunochromatographic Analyzer is a benchtop-to-field-deployable quantitative lateral flow immunoassay (LFIA) reader engineered for rapid, objective, and reproducible interpretation of colloidal gold–based test strips. It operates on the principle of photometric reflectance measurement: an integrated high-stability photocell detects wavelength-specific optical attenuation signals reflected from the test and control lines on immunochromatographic strips. Signal intensity is converted into digital concentration values via pre-calibrated strip-specific algorithms, eliminating subjective visual interpretation. Designed for routine screening in food safety, agricultural quality control, and veterinary residue monitoring laboratories—as well as mobile field units—the DTPN-1400SX bridges the gap between qualitative rapid tests and laboratory-grade quantification, supporting regulatory decision-making under time-sensitive conditions.

Key Features

• Automated strip handling with motorized cassette insertion and ejection—minimizing operator intervention and cross-contamination risk.
• 7-inch high-resolution capacitive touchscreen running a purpose-built Android-based firmware interface; optimized for glove-compatible operation and intuitive navigation by non-specialist personnel.
• Multi-modal connectivity architecture: native support for USB mass storage, Bluetooth 4.2 (for peripheral pairing), IEEE 802.11 b/g/n Wi-Fi, and Gigabit-capable Ethernet (RJ45); optional factory-installed 4G LTE module with APN configuration enables secure cloud synchronization in low-infrastructure environments.
• Built-in thermal printer with real-time report generation; supports ESC/POS protocol for seamless integration with external impact or label printers.
• On-device data management: stores up to 20,000 complete test records—including timestamp, sample ID, strip lot number, calibration status, raw reflectance values, and calculated analyte concentration—with encrypted local database and export capability via CSV/Excel-compatible formats.
• Pre-loaded assay libraries for over 30 validated targets across food and feed matrices, including aflatoxins (B1, B2, G1, G2, M1), ochratoxin A, zearalenone, deoxynivalenol, fumonisins, tetracyclines, sulfonamides, chloramphenicol, β-agonists (e.g., clenbuterol), and estradiol.

Sample Compatibility & Compliance

The DTPN-1400SX accepts standard lateral flow cassettes (3.5–5.0 mm width) and strip formats compliant with ISO/IEC 17025–accredited rapid test kits from major suppliers (e.g., Romer Labs, Neogen, BioControl, Vicam). It is routinely deployed in testing workflows aligned with national food safety standards (GB/T 5009.x, NY/T series), EU Commission Regulation (EC) No. 401/2006, and AOAC Official Methods of Analysis® (OMA) performance criteria for rapid methods. While the instrument itself does not carry CE IVD or FDA 510(k) clearance, its data output meets audit requirements for GLP-compliant documentation when used within validated laboratory SOPs—including mandatory electronic signature capture, user access logs, and immutable record timestamps. Firmware supports configurable audit trail settings compliant with FDA 21 CFR Part 11 Annex 11 principles.

Software & Data Management

The embedded Android platform runs DreTop’s proprietary LFA-Link™ software suite, featuring role-based user authentication (admin/operator modes), customizable report templates (PDF/HTML), and scheduled auto-backup to network shares or cloud endpoints (AWS S3, Azure Blob). All measurement data includes metadata tags: operator ID, environmental temperature/humidity (via optional external sensor input), strip expiration date, and calibration verification status. Raw reflectance curves are archived alongside final results, enabling retrospective reanalysis or method transfer validation. Software updates are delivered via signed OTA packages with SHA-256 integrity verification. Exported datasets include ISO/IEC 17025–recommended uncertainty annotations derived from strip-specific CV and accuracy specifications.

Applications

The DTPN-1400SX serves as a primary quantitative screening tool in decentralized testing networks—from grain elevators and dairy collection centers to border inspection posts and contract testing labs. Its validated use cases include mycotoxin surveillance in oilseeds (peanut, corn, cottonseed), cereal grains, and spices; antibiotic residue monitoring in raw milk and aquaculture samples; and hormonal growth promoter detection in meat processing facilities. In research settings, it supports assay development workflows requiring high-throughput strip optimization and kinetic binding profiling. The device is also employed in public health emergency response protocols where rapid triage of contaminated food batches is required prior to confirmatory LC-MS/MS analysis.

FAQ

What types of lateral flow strips are compatible with the DTPN-1400SX?
The analyzer supports all standard nitrocellulose-based colloidal gold immunochromatographic strips with defined test/control line geometry and optical contrast—provided they conform to DIN EN 13803:2015 dimensional tolerances and have published reflectance calibration curves.
Does the instrument require daily recalibration?
No. Calibration is performed during initial setup using certified reference strips; subsequent verification is conducted per batch (per strip lot) using included control strips. Full recalibration is only required after firmware updates or hardware service events.
Can test data be integrated into a LIMS environment?
Yes. Through its RESTful API and HL7-compliant messaging layer, the DTPN-1400SX supports bidirectional integration with major LIMS platforms (e.g., LabWare, STARLIMS, Thermo Fisher SampleManager) via secure TLS 1.2 encrypted channels.
Is the Android OS modified for regulatory compliance?
Yes. System-level modifications disable unnecessary services (e.g., Google Play, ad frameworks), enforce FIPS 140-2 cryptographic modules, and implement write-once logging for all critical operations—ensuring alignment with ISO/IEC 17025 Clause 7.11 and GMP Annex 11 expectations.
What environmental conditions are recommended for optimal performance?
Operating temperature: 10–35 °C; relative humidity: 30–80% RH (non-condensing); ambient light shielding recommended during measurement to minimize stray-light interference with reflectance detection.