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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">aids</journal-id><journal-title-group><journal-title xml:lang="ru">ВИЧ-инфекция и иммуносупрессии</journal-title><trans-title-group xml:lang="en"><trans-title>HIV Infection and Immunosuppressive Disorders</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2077-9828</issn><publisher><publisher-name>Baltic Medical Education Center</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22328/2077-9828-2026-18-1-44-53</article-id><article-id custom-type="elpub" pub-id-type="custom">aids-1140</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Информативность сердцевинного ВГС-антигена в диагностике ВГС-инфекции</article-title><trans-title-group xml:lang="en"><trans-title>Тhe informative value of the HCV core antigen in the diagnosis of HCV infection</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8492-6377</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Матиевская</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Matsiyeuskaya</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Матиевская Наталья Васильевна — доктор медицинских наук, профессор, заведующая кафедрой инфекционных болезней»</p><p>230009, Гродно, ул. М. Горького, д. 80</p></bio><email xlink:type="simple">natamati@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-9246-2144</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хомбак</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khombak</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хомбак Ольга Александровна — ассистент кафедры инфекционных болезней</p><p>230009, Гродно, ул. М. Горького, д. 80</p></bio><email xlink:type="simple">olya1989ty@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ершова</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Yarshova</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ершова Марина Владимировна — врач лабораторной диагностики (заведующий) клинико-диагностической лаборатории</p><p>230030, Гродно, бульвар Ленинского Комсомола, д. 52</p></bio><email xlink:type="simple">regclinic@gocb.by</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4002-9839</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курстак</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurstak</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курстак Ирина Андреевна — кандидат медицинских наук, проректор по идеологической и воспитательной работе</p><p>230009, Гродно, ул. Горького, д. 80</p></bio><email xlink:type="simple">ishchurco@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1862-4300</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Копыцкий</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kopitsky</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Копыцкий Андрей Витальевич — старший преподаватель кафедры медицинской и биологической физики</p><p>230009, Гродно, ул. Горького, д. 80</p></bio><email xlink:type="simple">andrey_cop@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Гродненский государственный медицинский университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Grodno State Medical University</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Гродненская университетская клиника</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Grodno University Clinic</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>09</day><month>05</month><year>2026</year></pub-date><volume>18</volume><issue>1</issue><fpage>44</fpage><lpage>53</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Матиевская Н.В., Хомбак О.А., Ершова М.В., Курстак И.А., Копыцкий А.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Матиевская Н.В., Хомбак О.А., Ершова М.В., Курстак И.А., Копыцкий А.В.</copyright-holder><copyright-holder xml:lang="en">Matsiyeuskaya N.V., Khombak O.A., Yarshova M.V., Kurstak I.A., Kopitsky A.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://hiv.bmoc-spb.ru/jour/article/view/1140">https://hiv.bmoc-spb.ru/jour/article/view/1140</self-uri><abstract><p>Цель исследования: оценить информативность ВГС-cАГ в диагностике ВГС-инфекции. Материалы и методы. Выявление ВГС-cАГ производилось методом иммунохимического анализа на автоматическом иммунохимическом анализаторе ARCHITECT ABBOTT i1000SR (Abbott, страна-производитель — США, 2013) в трех группах пациентов: 1-я группа — 201 пациент с моноинфекцией ВГС без коинфекций ВИЧ и ВГВ и без предшествующего противовирусного лечения ВГС-инфекции препаратами прямого противовирусного действия (ПППД); 2-я группа — 53 пациента с коинфекцией ВИЧ/ВГС и отсутствием предшествующего лечения ПППД; 3-я группа — 51 пациент с моноинфекцией ВГС без коинфекций ВИЧ и ВГВ после противовирусного лечения ПППД. Диагноз ВГС-инфекции был подтвержден выделение РНК ВГС методом ПЦР. Результаты и их обсуждение. Чувствительность (Se) теста по определению ВГС-сАГ в группе исследования для подтверждения диагноза ВГС-инфекции у анти-ВГС позитивных лиц составила 87.8%, специфичность (Sp) =58,8%. Несовпадение результатов определения ВГС-сАГ с РНК ВГС отмечено у пациентов низким уровнем ВН ВГС — Me (Q1; Q3) — 1100 (0; 4450) ME/мл. Не установлено влияния на точность определения ВГС-сАГ таких параметров, как возраст, пол пациентов, генотип ВГС, стадия фиброза печени, цирроз печени, уровень АСТ, АЛТ, билирубина, показателей анализа крови. Заключение. Положительный результат определения ВГС-сАГ может использоваться как подтверждающий тест ВГС-инфекции у анти-ВГС позитивных пациентов. При получении отрицательного результата на ВГС-сАГ лицам с позитивным анти-ВГС необходимо проводить тестирование на РНК ВГС (методом ПЦР) для исключения ложноотрицательных результатов.</p></abstract><trans-abstract xml:lang="en"><p>The aim of the study was to evaluate the informative value of the HCV core antigen in the diagnosis of HCV infection. Materials and methods. HCV core antigen was detected by immunoassay using an ARCHITECT ABBOTT i1000SR automated immunoassay analyzer (Abbott, USA, 2013) in three groups of patients: group 1 — 201 patients with HCV monoinfection without HIV or HBV coinfections and without prior antiviral treatment for HCV infection with direct-acting antiviral drugs (DAA); group 2 — 53 patients with HIV/HCV coinfection and no prior DAA treatment; group 3 — 51 patients with HCV monoinfection without HIV or HBV coinfections after DAA antiviral treatment. The diagnosis of HCV infection was confirmed by PCR isolation. Results and discussion. The sensitivity of the HCV-sAG test in the study group for confirming the diagnosis of HCV infection in anti-HCV-positive individuals was 87.8%, and the specificity was 58.8%. Discrepancies between the results of HCV-sAG and HCV RNA determination were observed in patients with low HCV viral loads — Me (Q1; Q3) — 1100 (0; 4450) IU/ml. No influence was found on the accuracy of of the HCV core antigen determination by parameters such as patient age, gender, HCV genotype, stage of liver fibrosis, liver cirrhosis, AST, ALT, bilirubin levels, or blood test parameters. Conclusion. A positive of the HCV core antigen result can be used as a confirmatory test for HCV infection in anti-HCV-positive patients. If a negative of the HCV core antigen result is obtained, individuals with a positive anti-HCV test should be tested for HCV RNA (PCR) to exclude false negative results.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сердцевинный антиген ВГС</kwd><kwd>ВГС-инфекция</kwd><kwd>диагностика</kwd><kwd>элиминация вирусных гепатитов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>HCV core antigen</kwd><kwd>HCV infection</kwd><kwd>diagnostics</kwd><kwd>viral hepatitis elimination</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Global hepatitis report 2024: action for access in low and middle-income countries. Geneva: World Health Organization, 2024.</mixed-citation><mixed-citation xml:lang="en">Global hepatitis report 2024: action for access in low and middle-income countries. 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