{"title":"Enhanced cardiovascular diagnostics using wearable ECG and bioimpedance monitoring with LightGBM classifier","authors":"Prince Jain , Ramji Gupta , Anand Joshi , Andrey Kuzmin","doi":"10.1016/j.biosx.2025.100617","DOIUrl":"10.1016/j.biosx.2025.100617","url":null,"abstract":"<div><div>Cardiovascular diseases (CVDs) are the leading cause of death worldwide, necessitating advanced diagnostic and monitoring tools. Traditional methods of cardiac monitoring face challenges such as limited availability, high costs, and continuous physician oversight. Recent advancements in mobile health (mHealth) technologies, including wearable devices and mobile applications, offer promising solutions for continuous and real-time monitoring of vital signs such as ECG, bioimpedance, and physical activity. This study focuses on integrating these monitoring modalities to enhance the accuracy and reliability of cardiovascular diagnostics. Specifically, we explore the use of the MAX30001 device for precise ECG and bioimpedance measurements in wearable applications. Machine learning techniques, particularly LightGBM, are employed to classify cardiac conditions based on the collected data. The LightGBM classifier achieved a test set accuracy of 94.49 %, with precision, recall, and F1-scores above 0.95 for all classes. The model's performance was further validated through cross-validation (CV), yielding a 5-fold CV accuracy of 95.86 % and a 10-fold CV accuracy of 96.16 %. The ROC curve analysis showed excellent discriminatory ability with AUC values close to 1. These findings highlight the potential applications of advanced mHealth solutions in providing continuous, accurate, and real-time monitoring of cardiovascular health, which can lead to better patient management and outcomes through timely and informed interventions.</div></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"24 ","pages":"Article 100617"},"PeriodicalIF":10.61,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shusheng Wei, Yuchen Shen, zhanpeng Zhang, Juan Wang
{"title":"Innovative Ag@Au nanozyme-enhanced organic photoelectrochemical transistor for ultrasensitive ochratoxin A detection","authors":"Shusheng Wei, Yuchen Shen, zhanpeng Zhang, Juan Wang","doi":"10.1016/j.biosx.2025.100612","DOIUrl":"10.1016/j.biosx.2025.100612","url":null,"abstract":"<div><div>Organic bioelectronic devices are developing as adaptable platforms for advanced biosensing applications, such as wearable sensors, neural interfaces and tissue engineering, due to their remarkable flexibility, mobility, ease of manufacture, and biocompatibility. The article presents a unique organic photoelectrochemical transistor (OPECT) sensor, combined with an Ag@Au nanozyme-mediated catalytic precipitation mechanism, creating an ultrasensitive detection platform for Ochratoxin A (OTA). The ZnO/ZnFe<sub>2</sub>O<sub>4</sub> heterostructure is established as a novel gating module. The ZnFe<sub>2</sub>O<sub>4</sub> layer may boost electrolyte interaction and light accessibility to the ZnO nanoarray, thereby modulating the response of the polymeric poly (3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) channel, which can be monitored through the channel current. In conjunction with aptamer sensing, the Ag@Au nanozyme, exhibiting peroxidase-mimicking activity, catalyzes the oxidation of 4-chloro-1-naphthol (4-CN), leading to the formation of an insoluble precipitate on the gate electrode surface, which diminishes the photocurrent and modifies the transistor response. The OPECT sensor demonstrates outstanding analytical capabilities for OTA, featuring a wide dynamic range from 10<sup>−5</sup> ng/mL to 10 ng/mL and a detection limit of 0.0206 pg/mL. The advancement of this OPECT sensor offers potential for employing organic photoelectrochemical transistors as a high-performance platform for OTA detection.</div></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"24 ","pages":"Article 100612"},"PeriodicalIF":10.61,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Saurabh Kaushik , Arkabrata Mishra , Roshan Ross , Sweta Srivastava , Cecil R. Ross , Gautam V. Soni
{"title":"High-throughput and label-free screening of red blood cell stiffness: A study of sickle cell disease","authors":"Saurabh Kaushik , Arkabrata Mishra , Roshan Ross , Sweta Srivastava , Cecil R. Ross , Gautam V. Soni","doi":"10.1016/j.biosx.2025.100616","DOIUrl":"10.1016/j.biosx.2025.100616","url":null,"abstract":"<div><div>Understanding the morphological and mechanical changes in cells are important for diagnostic and treatment methods in various diseases. In sickle cell disease (SCD), the mutated hemoglobin (HbS) aggregates inside the red blood cells (RBCs), making them rigid and, in extreme cases, sickle-shaped, resulting in anemia, episodes of pain, and multiple organ damage. Existing techniques are too costly and insensitive since the effect of the HbS gene (heterozygous and homozygous) is variable both in prevalence and clinical manifestations. In this work, we present a label-free, cost-effective, high-throughput electro-fluidic technique to study changes in the mechanical and morphological characteristics of RBCs. We validate our device by quantitatively comparing the mechanical properties of RBCs as a function of stiffness-altering drug (Latrunculin-A) with measurements using AFM. We demonstrate the on-site application of our system by screening SCD patients based on their RBC stiffness changes. The signatures of patient-specific heterogeneity in the RBC mechanical properties may help in monitoring clinical variability and identification of high-risk patients along with targeted therapies. The versatility of our measurements opens the whole cell stiffness as a preliminary screening biomarker in other haematological conditions, tumor cell identification, in veterinary sciences as well as in evaluating hydrogel technologies.</div></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"24 ","pages":"Article 100616"},"PeriodicalIF":10.61,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"2D nanomaterials in biosensing: Synthesis, characterization, integration in biosensors and their applications","authors":"Desmond Lutomia , Renu Poria , Deepak Kala , Preeti Garg , Rupak Nagraik , Ankur Kaushal , Shagun Gupta , Deepak Kumar","doi":"10.1016/j.biosx.2025.100615","DOIUrl":"10.1016/j.biosx.2025.100615","url":null,"abstract":"<div><div>Recent advances in the synthesis of functional nanomaterials and precisely engineered nanostructures have opened up new avenues for the fabrication of viable biosensors for field analysis. Two-dimensional (2D) nanomaterials provide unique hierarchical structures, high surface area, and layered configurations with multiple length scales and porosity, and the possibility to create functionalities for targeted recognition at their surface. In addition to providing extra features like structural color, ordered morphological features, and the capacity to detect and react to external stimuli, such hierarchical structures provide opportunities to tune the characteristics of materials. Combining these distinctive qualities of the various nanostructure types and using them as a foundation for bimolecular assemblies can yield biosensing platforms with enhanced robustness, sensitivity, and selectivity for the detection of a wide range of analytes, as well as targeted recognition and transduction properties that can have a positive impact on numerous fields. This review describes the classification, synthesis and characterization of 2D nanomaterials and their functionalization. In addition, the merits of the 2D nanomaterials and their applications in health, environmental monitoring and food safety and control are covered. The final part anticipates the advancement of 2D nanomaterials in biosensors, challenges and future directions of 2D nanomaterials in biosensors.</div></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"24 ","pages":"Article 100615"},"PeriodicalIF":10.61,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Burcu Özcan , İnci Uludağ Anıl , Mehmet Altay Ünal , Fikret Arı , Mustafa Kemal Sezgintürk , Sibel Ayşıl Özkan
{"title":"An innovative and mass-sensitive quartz tuning fork (QTF) biosensor for GFAP detection: A novel approach for traumatic brain injury diagnosis","authors":"Burcu Özcan , İnci Uludağ Anıl , Mehmet Altay Ünal , Fikret Arı , Mustafa Kemal Sezgintürk , Sibel Ayşıl Özkan","doi":"10.1016/j.biosx.2025.100614","DOIUrl":"10.1016/j.biosx.2025.100614","url":null,"abstract":"<div><div>The early diagnosis and management of traumatic brain injury (TBI) are dependent upon the early and precise detection of glial fibrillary acidic protein (GFAP). In this investigation, a novel biosensor based on quartz tuning forks (QTF) was introduced and functionalized with 11-mercaptoundecanoic acid (11-MUA). This biosensor is designed to facilitate the highly sensitive and selective detection of GFAP in human serum. In contrast to conventional neuroimaging methods, which are resource-intensive and frequently inaccessible in emergency situations, this innovative biosensor offers a portable, cost-effective, and efficient alternative for rapid GFAP measurement. The detection range of the system is 0.05 fg mL<sup>−1</sup> to 25 fg mL<sup>−1</sup>. The Atomic Force Microscopy (AFM) was utilized to visualize the morphology of the QTF surface during the immobilization steps of the sensor. The developed biosensor presented advantages such as ability to determine GFAP concentrations at femtogram level, reproducibility and repeatability (standard deviation: ±0.0935966 Hz, and coefficient of variation: 7.91 %). This study highlights a significant progression in biosensing technology, providing an exceptionally sensitive and scalable platform for diagnosing neurological disorders, with potential uses in point-of-care environments.</div></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"24 ","pages":"Article 100614"},"PeriodicalIF":10.61,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143791262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vivek Semwal , Asbjørn Meldgaard Moltke , Ole Bang , Jakob Janting
{"title":"Real-time monitoring of ssDNA binding using a fiber optic LSPR microfluidic platform","authors":"Vivek Semwal , Asbjørn Meldgaard Moltke , Ole Bang , Jakob Janting","doi":"10.1016/j.biosx.2025.100613","DOIUrl":"10.1016/j.biosx.2025.100613","url":null,"abstract":"<div><div>In this paper, we present the development of a localized surface plasmon resonance (LSPR) sensor for the detection of single-stranded DNA (ssDNA). The LSPR chip was fabricated using gold nanoparticles (AuNPs) with a diameter of 80 nm. It was integrated with a microfluidic chamber to ensure stable measurements. We employed data processing techniques to fit the absorbance curve and extract the resonance wavelength, significantly reducing noise and achieving a 100-fold improvement in signal quality. The fabricated LSPR chips demonstrated a bulk refractive index sensitivity of approximately 85–90 nm/RIU. This paper outlines a robust methodology for reliable LSPR measurements based on cheap and readily accessible instruments. We have shown successfully real-time binding between Poly(T<sub>20</sub>) and Poly(A<sub>20</sub>), sensitive down to a concentration of 2 nM, while maintaining signal fluctuations 10 times lower than the shift in resonance wavelength without using any complex signal amplification technique. The sensor exhibits a limit of detection (LOD) of 0.75 nM. The proposed method shows potential for high-sensitivity and reliable real-time detection of smaller biomolecules, environmental pollutants, foodborne pathogens, toxins, and disease biomarkers.</div></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"24 ","pages":"Article 100613"},"PeriodicalIF":10.61,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Octavia Hogaboam , Viola A. Manning , Catherine L. Reardon , Kristin M. Trippe
{"title":"Hot or not: Quantifying isothiocyanates in plants, soil, and other media","authors":"Octavia Hogaboam , Viola A. Manning , Catherine L. Reardon , Kristin M. Trippe","doi":"10.1016/j.biosx.2025.100599","DOIUrl":"10.1016/j.biosx.2025.100599","url":null,"abstract":"<div><div>Isothiocyanates (ITCs) are bioactive compounds produced by plants in the Brassicales that serve as natural defense mechanisms against pests and pathogens, and provide sharp, hot, and pungent flavors to plants like wasabi, mustards, and horseradish. In agricultural settings, natural and synthetic ITCs are used to biofumigate soils prior to planting; however, because residual ITCs can inhibit germination or plant growth, (i.e. soils are “hot”), caution is necessary when fields are replanted. Current methodologies that measure ITCs are labor intensive and require expensive instrumentation. Therefore, there is a critical need for rapid, reliable, and inexpensive methods that detect ITCs in a variety of plant and soil matrices. This study describes the development and validation of the SaxAPIL biosensor, which uses an ITC-responsive promoter to drive expression of a bioluminescent reporter in <em>Pseudomonas fluorescens</em> SBW25 to quantify ITCs. Our results indicate that SaxAPIL can be used in a high throughput microplate-based assay to detect ITCs in a dose-dependent manner in solutions, plant- and seed meal-derived extracts, and soils amended with green manure or seed meals. Our results clearly demonstrate that SaxAPIL is a robust biosensor for the detection and quantification of aliphatic ITCs in plants and soil. The methodology presented here may be adapted to provide more efficient and less expensive methods to measure ITCs in industrial, health, and life science applications.</div></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"24 ","pages":"Article 100599"},"PeriodicalIF":10.61,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rémi F. Dutheil , Dabeaurard Tho , Iman Pitroipa , Raphaël Trouillon
{"title":"Combining dopamine and glucose sensings on paper devices for the metabolic study of neurosecretion","authors":"Rémi F. Dutheil , Dabeaurard Tho , Iman Pitroipa , Raphaël Trouillon","doi":"10.1016/j.biosx.2025.100601","DOIUrl":"10.1016/j.biosx.2025.100601","url":null,"abstract":"<div><div>Glucose, the main source of energy of the human body, and dopamine, a major neurotransmitter, are two analytes widely investigated in the study of the brain. In many pathologies, a dysfunction in their metabolic pathways can be observed, leading to neurological disorders. Better understanding the interplays between secretion and cellular metabolism is critical to better address these diseases. In this study, we study the simultaneous detection of glucose consumption and dopamine secretion using a paper-based electrode (PBE). An electrode made of carbon nanotube-coated paper was functionalized with platinum nanoparticles and glucose oxidase to gain sensitivity towards glucose. Maximal current density (<em>J</em><span><math><msub><mrow></mrow><mrow><mi>m</mi><mi>a</mi><mi>x</mi></mrow></msub></math></span>) and Michaelis–Menten constant (<em>K</em><span><math><msub><mrow></mrow><mrow><mi>m</mi></mrow></msub></math></span>) were respectively <span><math><mrow><mn>12</mn><mo>.</mo><mn>4</mn><mo>±</mo><mn>2</mn><mo>.</mo><mn>0</mn><mspace></mspace><mi>μ</mi></mrow></math></span>A.mm<sup>−2</sup> and 7.6 ± 1.5 mM for the glucose calibration. The results suggest that dopamine secretion and glucose consumption can be measured in a neuron cell model using the developed paper-based sensor. After stimulating the cells, glucose and dopamine concentration decreased by 1.1 mM and increased by <span><math><mrow><mn>7</mn><mo>.</mo><mn>1</mn><mspace></mspace><mi>μ</mi></mrow></math></span>M, respectively. In addition, to confirm the sensor’s detection of dopamine secretion, the impact of L-DOPA, a dopamine precursor, was tested. Dopamine secretion increased two-fold after incubation with L-DOPA, while glucose consumption remained unchanged. This opens new opportunities for quantitative, rapid multianalyte sensing of the chemical inputs and outputs of cellular mechanisms with an easy-to-use and affordable device.</div></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"24 ","pages":"Article 100601"},"PeriodicalIF":10.61,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ana I. Furtado , Joseph W. Lowdon , Kasper Eersels , Bart van Grinsven , Adriana Cruz , Jacinta Serpa , Vasco D.B. Bonifácio , Raquel Viveiros , Teresa Casimiro
{"title":"Mechanosynthesis and thermal bio–sensing of beryllium–based molecularly imprinted polymers","authors":"Ana I. Furtado , Joseph W. Lowdon , Kasper Eersels , Bart van Grinsven , Adriana Cruz , Jacinta Serpa , Vasco D.B. Bonifácio , Raquel Viveiros , Teresa Casimiro","doi":"10.1016/j.biosx.2025.100605","DOIUrl":"10.1016/j.biosx.2025.100605","url":null,"abstract":"<div><div>The adsorption of amino acids on electrode surfaces is pertinent to understanding the interfacial behaviours of biological molecules and addressing industrial challenges associated with their purification and monitoring in downstream processes. Molecularly imprinted polymers (MIPs) are ideal candidates for targeted molecular recognition. Metals offer significant potential for enhancing biological molecule recognition by enabling the creation of selective binding sites within polymeric matrices through molecular imprinting. The metal mediated coordination between the monomer and the biomolecule used as template greatly enhances both the affinity and selectivity of molecular recognition. Herein, beryllium–based natural monomers (curcumin and lawsone) were synthesized and applied as functional monomers in the synthesis of MIPs using the amino acid L–leucine (LEU) as template. Mechanochemistry (ball milling) was chosen as key methodology for the synthesis of both the beryllium–based monomers and MIP (BeMIPMs) fabrication. Subsequently, supercritical CO<sub>2</sub> (scCO<sub>2</sub>) technology was used for efficiently desorb of the template, yielding vacant receptors. These two green technologies allowed the preparation of BeMIPMs as ready–to–use and stable dry polymeric powders. The prepared BeMIPM particles were then incorporated into a thermally conductive layer via micro–contact deposition. Their response towards LEU and analogues molecules was analysed using the heat–transfer method (HTM), and their performance was compared to the non–imprinted polymer (BeNIPMs) reference. The generated biosensor was found to have an optimal linear range of 0.30–0.93 mM and LoD of 0.16 mM (obtained by the <em>3σ method</em>), while also being selective when comparing the thermal response to other analogues molecules (<em>IF</em><sub><em>effect-LEU</em></sub> = 1.6–1.8 <em>vs. IF</em><sub><em>analogues-molecule</em></sub> = 0.5–1.5). BeMIPM shows a promising performance for the monitoring of LEU in purification processes due to its thermal response, inclusive in real samples, offering a low–cost thermal platform for monitoring specific amino acids in complex industrial matrices.</div></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"24 ","pages":"Article 100605"},"PeriodicalIF":10.61,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sensitive and selective electrochemical biosensor based on Manganese(II) complex for simultaneous determination of adenine and guanine from clinical samples and DNA extract samples","authors":"Melaku Metto , Alemu Tesfaye , Minaleshewa Atlabachew , Abayneh Munshea , Atakilt Abebe","doi":"10.1016/j.biosx.2025.100603","DOIUrl":"10.1016/j.biosx.2025.100603","url":null,"abstract":"<div><div>The purines guanine and adenine are essential building blocks for nucleic acids and influence numerous biochemical processes in organisms. Elevated levels of these compounds in the bloodstream can indicate conditions such as cancer and provide insights into cellular energy status, tissue degradation, and enzyme malfunctions in metabolic pathways.</div><div>This study focuses on developing a voltammetric sensor through the electropolymerization of a tetraresorcinatemanganate (II) complex on a glassy carbon electrode (poly(Mn(HR)<sub>4</sub>)/GCE), which was thoroughly characterized. The poly(Mn(HR)<sub>4</sub>)/GCE exhibited distinct, well-defined irreversible oxidative peaks for adenine and guanine. The peak currents displayed strong linearity with analyte concentrations within the 0.01–300 μM range, boasting a detection limit of 66.54 and 9.1 nm and a limit of quantifications of 221.80 and 30.23 nm, respectively. The sensor was successfully employed to detect adenine and guanine in urine, clinical blood serum, and DNA extract samples, with spike recovery rates in these samples reaching the range of 96–104 %. The interference recovery results showcased an error rate of less than 6 %, highlighting the method's superior lower detection limit and broader dynamic range compared to existing techniques. These findings underscore the potential practicality of the proposed approach for accurately determining adenine and guanine in diverse real samples with intricate matrices.</div></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"24 ","pages":"Article 100603"},"PeriodicalIF":10.61,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}