{"id":23368,"date":"2025-08-19T15:34:12","date_gmt":"2025-08-19T12:34:12","guid":{"rendered":"https:\/\/canatu.com\/?p=23368"},"modified":"2025-08-21T13:41:58","modified_gmt":"2025-08-21T10:41:58","slug":"dry-printed-carbon-nanotube-film-based-electrochemical-immunosensor-for-total-testosterone-detection","status":"publish","type":"post","link":"https:\/\/canatu.com\/company\/carbon-age-news\/dry-printed-carbon-nanotube-film-based-electrochemical-immunosensor-for-total-testosterone-detection\/","title":{"rendered":"Dry-printed carbon nanotube film based electrochemical immunosensor for total testosterone detection"},"content":{"rendered":"\n<p>Joon et al. (2025): <a href=\"https:\/\/doi.org\/10.1016\/j.biosx.2025.100660\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1016\/j.biosx.2025.100660<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Highlights<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Efficiency of Dry printed carbon nanotube film for electrochemical sensing.<\/li>\n\n\n\n<li>Pristine carbon nanotube film for detection of testosterone.<\/li>\n\n\n\n<li>Electrochemical-based testosterone biosensor for human serum samples.<\/li>\n\n\n\n<li>Immunosensor for testosterone, matching commercial ELISA kit performance.<\/li>\n\n\n\n<li>Short-term room temperature storage of testosterone sensors.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Abstract<\/h3>\n\n\n\n<p>Testosterone (TST), a critical hormone for male health, requires precise monitoring due to the significant adverse effects of both deficiency and excess, including reproductive dysfunction, mood alterations, and metabolic imbalances. This study reports a novel electrochemical biosensor designed for rapid and sensitive point-of-care (POC) detection of total TST in serum samples. <\/p>\n\n\n\n<p>The sensing platform utilizes a cost-effective, roll-to-roll processed carbon nanotube (CNT) film as a scaffold. To create the biorecognition layer, bovine serum albumin-testosterone conjugate (BSA TST) was uniformly immobilized into the CNT film using an automated liquid dispensing system, enabling high-throughput and reproducible sensor fabrication. The biosensor employs a competitive immunoassay principle, where TST in the sample competes with immobilized BSA TST for the binding sites of antibody against TST horse-radish peroxidase conjugate (AbHRP). Amperometry at \u22120.2&nbsp;V vs. Ag\/AgCl ink was used to monitor affinity reaction upon addition of H<sub>2<\/sub>O<sub>2<\/sub>&nbsp;with 3,3\u2032,5,5\u2032-Tetramethylbenzidine (TMB) redox mediator yielding a dynamic range of 82\u20131080&nbsp;ng\/dL. Limit of detection (LOD) and limit of quantification (LOQ) of 12.7 and 82&nbsp;ng\/dL were achieved respectively. <\/p>\n\n\n\n<p>Validation in spiked human serum demonstrated excellent performance, with quantifiable results aligning well with the established physiological range of TST in healthy males (186\u20131180&nbsp;ng\/dL), highlighting the potential of this biosensor for clinical applications.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Main conclusions<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Innovative Biosensor: Electrochemical immunosensor was developed for TST using Canatu novel dry-printed carbon nanotube electrodes and a competitive immunoassay.<\/li>\n\n\n\n<li>High Performance: The biosensor demonstrated excellent analytical performance, including strong stability, rapid detection, and good reproducibility for measuring TST in human serum.<\/li>\n\n\n\n<li>Clinical Relevance: The biosensor provides accurate and cost-effective total TST quantification comparable to traditional, more time-consuming ELISA methods. Its potential applications include clinical diagnostics, sports, and general wellness.<\/li>\n\n\n\n<li>Future Direction: Future work will focus on validating the developed biosensor with fresh human serum samples from diverse patients, expanding its application to include clinically relevant ranges for women and children.<\/li>\n<\/ul>\n\n\n\n\n<div class=\"block block--large-person-card dark-bg fullwidth\" >\n  <h2>Interested in carbon nanotubes for medical applications? Get in touch <\/h2>\n  <div class=\"block__wrapper\">\n          <div class=\"block__image\">\n                <picture>\n  <source srcset=\"https:\/\/canatu.com\/wp-content\/uploads\/2025\/06\/Nedal-Safwat-yellow.webp\" type=\"image\/webp\">\n  <source srcset=\"https:\/\/canatu.com\/wp-content\/uploads\/2025\/06\/Nedal-Safwat-yellow.png\" type=\"image\/png\">\n  <img decoding=\"async\" src=\"https:\/\/canatu.com\/wp-content\/uploads\/2025\/06\/Nedal-Safwat-yellow.png\" alt=\"Nedal Safwat, Chief Development Officer of Canatu Plc\" loading=\"lazy\">\n<\/picture>      <\/div>\n        <div class=\"block__content\">\n      <div class=\"person-name\">Nedal Safwat<\/div>\n              <div class=\"person-title\">CDO<\/div>\n                    <a class=\"person-email\" href=\"mailto:nedal.safwat@canatu.com\">nedal.safwat@canatu.com<\/a>\n                    <a class=\"person-phone\" href=\"tel:+1-919-452-8721\">+1-919-452-8721<\/a>\n          <\/div>\n  <\/div>\n<\/div>\n\n\n<div 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       \t\n          <\/div>\n  <\/div>\n<\/div>\n\n\n<div class=\"block block--story-listing dark-bg fullwidth\" >\n  <div class=\"block__wrapper\">\n    <a class=\"heading-title\" href=\"\/company\/carbon-age-news\"><h2>Carbon age news<\/h2><\/a>\n    <div class=\"block__content\">\n              <div class=\"block__row\">\n          <a href=\"https:\/\/canatu.com\/company\/carbon-age-news\/canatu-will-release-its-financial-statements-bulletin-for-the-2025-financial-year-on-tuesday-march-3-2026\/\">\n            <div class=\"block__image img-zoom\">\n\t\t\t\t\t\t\t              <picture>\n  <source srcset=\"https:\/\/canatu.com\/wp-content\/uploads\/2026\/02\/GettyImages-1040333764.webp\" type=\"image\/webp\">\n  <source srcset=\"https:\/\/canatu.com\/wp-content\/uploads\/2026\/02\/GettyImages-1040333764.png\" type=\"image\/png\">\n  <img decoding=\"async\" src=\"https:\/\/canatu.com\/wp-content\/uploads\/2026\/02\/GettyImages-1040333764.png\" alt=\"\" loading=\"lazy\">\n<\/picture>\t\t\t\t\t\t<\/div>\n            <div class=\"block__text\">\n              <div class=\"post__meta\">\n                <span class=\"post__category\">News<\/span>\n                <span class=\"post__date\">Feb 23, 2026<\/span>\n              <\/div>\n              <h3 class=\"post__title\">Canatu will release its Financial Statements Bulletin for the 2025 financial year on Tuesday, March 3, 2026<\/h3>\n            <\/div>\n          <\/a>\n        <\/div>\n              <div class=\"block__row\">\n          <a href=\"https:\/\/canatu.com\/company\/carbon-age-news\/canatu-plcs-new-series-a-shares-subscribed-for-with-investor-warrants-have-been-registered-with-the-finnish-trade-register\/\">\n            <div class=\"block__image img-zoom\">\n\t\t\t\t\t\t\t              <picture>\n  <source srcset=\"https:\/\/canatu.com\/wp-content\/uploads\/2024\/09\/Canatu_General_Header_photos12_1920x627-717x450.webp\" type=\"image\/webp\">\n  <source srcset=\"https:\/\/canatu.com\/wp-content\/uploads\/2024\/09\/Canatu_General_Header_photos12_1920x627-717x450.jpg\" type=\"image\/jpeg\">\n  <img decoding=\"async\" src=\"https:\/\/canatu.com\/wp-content\/uploads\/2024\/09\/Canatu_General_Header_photos12_1920x627-717x450.jpg\" alt=\"\" loading=\"lazy\">\n<\/picture>\t\t\t\t\t\t<\/div>\n            <div class=\"block__text\">\n              <div class=\"post__meta\">\n                <span class=\"post__category\">News<\/span>\n                <span class=\"post__date\">Feb 18, 2026<\/span>\n              <\/div>\n              <h3 class=\"post__title\">Canatu Plc\u2019s new series A shares subscribed for with investor warrants have been registered with the Finnish Trade Register<\/h3>\n            <\/div>\n          <\/a>\n        <\/div>\n              <div class=\"block__row\">\n          <a href=\"https:\/\/canatu.com\/company\/carbon-age-news\/canatu-appoints-antti-harmanmaa-as-vp-legal-and-general-counsel\/\">\n            <div class=\"block__image img-zoom\">\n\t\t\t\t\t\t\t              <picture>\n  <source srcset=\"https:\/\/canatu.com\/wp-content\/uploads\/2026\/02\/antti-test-430x450.webp\" type=\"image\/webp\">\n  <source srcset=\"https:\/\/canatu.com\/wp-content\/uploads\/2026\/02\/antti-test-430x450.png\" type=\"image\/png\">\n  <img decoding=\"async\" src=\"https:\/\/canatu.com\/wp-content\/uploads\/2026\/02\/antti-test-430x450.png\" alt=\"\" loading=\"lazy\">\n<\/picture>\t\t\t\t\t\t<\/div>\n            <div class=\"block__text\">\n              <div class=\"post__meta\">\n                <span class=\"post__category\">News<\/span>\n                <span class=\"post__date\">Feb 9, 2026<\/span>\n              <\/div>\n              <h3 class=\"post__title\">Canatu appoints Antti H\u00e4rm\u00e4nmaa as VP, Legal and General Counsel<\/h3>\n            <\/div>\n          <\/a>\n        <\/div>\n          <\/div>\n    <a class=\"cta-button\" href=\"\/company\/carbon-age-news\">Read more news<\/a>\n  <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Joon et al. (2025): https:\/\/doi.org\/10.1016\/j.biosx.2025.100660 Highlights Abstract Testosterone (TST), a critical hormone for male health, requires precise monitoring due to the significant adverse effects of both deficiency and excess, including reproductive dysfunction, mood alterations, and metabolic imbalances. This study reports a novel electrochemical biosensor designed for rapid and sensitive point-of-care (POC) detection of total TST [&hellip;]<\/p>\n","protected":false},"author":39,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[98],"tags":[],"class_list":["post-23368","post","type-post","status-publish","format-standard","hentry","category-industry-coverage"],"acf":[],"lang":"en","translations":{"en":23368},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/canatu.com\/wp-json\/wp\/v2\/posts\/23368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/canatu.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/canatu.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/canatu.com\/wp-json\/wp\/v2\/users\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/canatu.com\/wp-json\/wp\/v2\/comments?post=23368"}],"version-history":[{"count":17,"href":"https:\/\/canatu.com\/wp-json\/wp\/v2\/posts\/23368\/revisions"}],"predecessor-version":[{"id":23398,"href":"https:\/\/canatu.com\/wp-json\/wp\/v2\/posts\/23368\/revisions\/23398"}],"wp:attachment":[{"href":"https:\/\/canatu.com\/wp-json\/wp\/v2\/media?parent=23368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/canatu.com\/wp-json\/wp\/v2\/categories?post=23368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/canatu.com\/wp-json\/wp\/v2\/tags?post=23368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}