Hemoglobin Detection Electrode Sensor Solutions
Magnetron sputtering gold electrode technology empowering hemoglobin point-of-care testing (POCT), providing core sensing components for anemia screening, preoperative assessment and chronic disease management
Industry Overview
Anemia is one of the most common blood system disorders worldwide. According to WHO statistics, approximately 24% of the global population is affected by anemia, with iron-deficiency anemia accounting for the highest proportion. Hemoglobin (Hb) concentration is the core indicator for anemia diagnosis, and also one of the most fundamental and frequently performed tests in perioperative blood management, maternal health care and chronic disease follow-up.
Traditional hemoglobin testing relies on large biochemical analyzers, requiring venous blood collection, centrifugal separation and professional operation — a cumbersome process with expensive equipment that is ill-suited to point-of-care testing (POCT) scenarios such as grassroots healthcare, emergency sites and home self-monitoring. In recent years, rapid electrochemical test strip technology has risen swiftly, becoming an important tool for anemia screening and blood health management, with the market continuing to expand.
Huili Biotech specializes in the R&D and manufacturing of hemoglobin detection electrode sensors. Using advanced magnetron sputtering vacuum-coated gold electrode technology, we provide high-precision, high-stability and strongly anti-interference core components for hemoglobin detection to medical device manufacturers worldwide, covering diverse clinical scenarios including anemia screening, perioperative management, maternal health care, dialysis monitoring and sports medicine.
Technical Solutions
1. Magnetron Sputtering Gold Electrode Technology
Huili Biotech uses high-purity gold (Au ≥ 99.99%) targets in a 10⁻³ to 10⁻⁵ Pa high-vacuum environment for magnetron sputtering deposition, achieving nano-scale film thickness control (10–200 nm, uniformity error < ±5%). The high-vacuum environment effectively prevents oxygen and impurity contamination, ensuring gold film purity of 99.99% or higher, laying the foundation for long-term electrochemical stability of the electrodes.
2. Electrochemical Detection Principle and Sensitivity Optimization
Gold possesses excellent electrocatalytic activity, significantly reducing the overpotential of hemoglobin redox reactions. Through surface engineering technologies such as gold nanoparticle modification and carbon nanotube composites, Huili Biotech further amplifies electrochemical signal intensity, enabling precise quantitative detection from as little as 1–5 μL of capillary blood, with sensitivity reaching the 0.1 g/dL level — fully meeting the WHO anemia diagnostic threshold accuracy requirements.
3. Anti-Interference and Selectivity Design
Blood samples are extremely complex, with electrolytes, proteins, lipids, bilirubin, ascorbic acid and other substances potentially interfering with detection results. Gold electrode surfaces are chemically stable, resistant to oxidation and corrosion, and can effectively shield against common interferents through selective membrane modification. Compared with carbon electrodes, which are susceptible to pH and ionic strength fluctuations, gold electrode test strips demonstrate significantly higher detection consistency across different individuals and physiological states.
4. Batch-to-Batch Consistency and Metrological Traceability
The precision controllability of magnetron sputtering technology, combined with the chemical inertness of gold itself, ensures highly consistent electrode performance within the same batch and across different batches. The diagnostic thresholds for anemia (<13 g/dL for adult males, <12 g/dL for adult females) require test results with high metrological traceability and comparability. Standardized production of gold electrode test strips ensures that detection deviation for every batch remains within clinically acceptable limits throughout long-term supply.
Product Series
| Product | Application | Technical Features |
|---|---|---|
| Hemoglobin Rapid-Test Strip Electrodes | Grassroots anemia screening, physical examination surveys, home self-testing | 10–30 second rapid result, micro-sampling (1–5 μL), room-temperature storage for 18–24 months |
| Perioperative Hemoglobin Monitoring Electrodes | Preoperative assessment, intraoperative blood loss monitoring, postoperative recovery tracking | High sensitivity, instant bedside detection, no large equipment required |
| Dialysis Patient Hemoglobin Dynamic Monitoring Electrodes | Hemodialysis centers, nephrology outpatient clinics | Excellent long-term stability, supports instant pre/post-dialysis comparison, low drift |
| Multi-Parameter Combined Detection Electrodes (Hb + other indicators) | Comprehensive physical examination equipment, multi-function POCT instruments | Multi-channel design, high selectivity, modular adaptation to different host devices |
Customization Process
- Requirement Assessment — Clarifying core requirements including detection accuracy, response speed, sample type, operating environment and target market
- Solution Design — Defining electrode material system (pure gold / gold nano-composite), film thickness parameters, geometric dimensions and reaction system formulation
- Sample Validation — Providing 3–5 sample batches for comprehensive validation of accuracy, precision, anti-interference and accelerated aging performance
- Mass Production & Delivery — Entering 100,000-class clean workshop batch production after validation, with full-process quality control ensuring batch-to-batch consistency