Aliye Çelikkol
Purpose: The importance of medical biochemistry laboratories has increased in the ongoing coronavirus
disease 2019 (COVID-19) pandemic. This study aimed to reveal the current situation of medical
biochemistry specialists and medical biochemistry laboratories in 1 year from...
Journal of Turkish Clinical Biochemistry
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2021-12-01
Muhammed Emin Düz, Elif Menekşe, Aydın Balcı, Mustafa Durmaz
Aim: With the COVID-19 pandemic, clinicians' expectations from laboratory professionals and the
desired test volumes have increased significantly. The specialist physicians do not sufficiently
understand the laboratory team's workflow struggling with the pandemic at the...
Journal of Turkish Clinical Biochemistry
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2021-12-01
Engin Işık, Sembol Yıldırmak, Murat Usta, Ömer Emecen
Aims:The aim of this study is to investigate the problems/achievements experienced by Medical
Biochemistry residents/assistants during the COVID-19 pandemic and to create suggestions that will
ensure the continuity of working conditions and speciality education in better conditions....
Journal of Turkish Clinical Biochemistry
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2022-04-01
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DOI: 10.56615/tkbd.2022.03
Özben Özden Işıklar, Cansu Manav, Evin Kocatürk, Hüseyin Kayadibi, İbrahim Özkan Alataş
Objective: This study aimed to evaluate the frequency of repeat lipoprotein(a) testing, determine whether repeated measurements changed risk classification, assess the clinical significance of observed changes using the reference change value, and investigate whether the...
Journal of Turkish Clinical Biochemistry
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2026-06-01
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DOI: 10.65717/jtcb.2026.260013
Tevfik Balci, Merve Sibel Güngören, Saliha Uysal, Nejla Özer, Mehmet Aköz
Objective: Hemoglobinopathies are an array of disorders that affect hemoglobin (Hb) function. HPLC is
by far the most common technique used for detection of hemoglobinopathies worldwide. The aim of
this study is to evaluate 3-year retrospective data of a tertiary hospital in...
Journal of Turkish Clinical Biochemistry
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2017-08-01
Gülsüm Feyza Türkeş, Niyazi Samet Yılmaz, Muhittin Abdulkadir Serdar, Özlem Gülbahar
Objective: Automated hematology analyzer flags may provide early warning signals for hematological malignancies. This study aimed to evaluate the diagnostic performance of Sysmex XN-1000 analyzer flags and to develop a multivariable prediction model for identifying active...
Journal of Turkish Clinical Biochemistry
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2026-08-25
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DOI: 10.65717/jtcb.2026.26028
Giray Bozkaya, Sibel Bilgili
Introduction: The disease caused by SARS-CoV-2, which the World Health Organization has
considered as a pandemic, was named COVID-19 and has since spread worldwide. The COVID-19
pandemic has drastically changed the way we live and work. During events like COVID-19, it is...
Journal of Turkish Clinical Biochemistry
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2022-04-01
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DOI: 10.56615/tkbd.2022.02
Meltem Yardim, Levent Deniz, Damla Kayalp, Nilüfer Celik, Burcu Ulas Kahya
Aim: It was aimed to determine predictive markers for the need for intensive care unit (ICU) hospitalization in patients with coronavirus infection.
Material and Methods: This study was performed retrospectively from data of patients hospitalized with...
Journal of Turkish Clinical Biochemistry
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2023-08-01
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DOI: 10.56615/tkbd.2023.14
Inanc Karakoyun, Fatma Demet Arslan, Selin Onur, Yasemin Kilic Ozturk, Hulya Parildar, Banu Isbilen Basok
Aim: In this study, we compared 3 different clot-activator gel tubes to a glass reference tube and
evaluated the effect of storage time on 30 different biochemical analytes.
Material and Methods: Blood samples were collected in 4 types of tubes: an...
Journal of Turkish Clinical Biochemistry
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2020-08-01
Nilgün Başaran, Osman Evliyaoğlu, Sembol Yıldırmak, Eren Vurgun
Aim: High-risk laboratory results, known as Critical or panic laboratory value, is an indicator of a lifethreatening
condition. The test results of critical laboratory value levels that are not determined and
communicated by clinicians prevent early diagnosis and treatment,...
Journal of Turkish Clinical Biochemistry
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2019-04-01
Hamza Malik Okuyan, Serdar Doğan, Tayibe Bal, Mehmet Çabalak
Aim: The COVID outbreak is a serious health problem affecting socio-economic life and healthcare systems worldwide. Although the role of Semaphorins in some diseases is relatively known, the association of these molecules with the pathogenesis of COVID-19 remains unclear....
Journal of Turkish Clinical Biochemistry
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2023-08-01
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DOI: 10.56615/tkbd.2023.10
Evin Kocatürk, Alparslan Birdane, Arif Alper Cevik, Ertugrul Colak, Ahmet Musmul, Omer Colak
Aim: Early risk classification after acute myocardial infarction is very important for the prediction of
complications. In this study, it was aimed to find the most sensitive panel in the prediction of prognosis
after acute myocardial infarction by multi-biomarker...
Journal of Turkish Clinical Biochemistry
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2022-12-01
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DOI: 10.56615/tkbd.2022.14
Raziye Topkafa, Abdullah Sivrikaya, Duygu Eryavuz Onmaz, Gulsum Abuşoğlu, Muhammet Limon, Sema Yılmaz, Ali Ünlü
Aim: Homocitrulline (Hcit) is a modified amino acid originated by carbamylation of lysine residues and
it is considered a potential biomarker in inflammatory diseases. Behçet's disease (BD) is an
autoinflammatory disease, the diagnosis of the disease is based on clinical...
Journal of Turkish Clinical Biochemistry
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2022-08-01
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DOI: 10.56615/tkbd.2022.09
Hasan Basri Savas, Meral Tugba Cimsir, Turkan Guney
Objective(s):Unexplained infertility (UI) is a multifaceted reproductive disorder with an ambiguous cause. Oxidative stress has arisen as a possible factor in its pathophysiology. This study sought to evaluate the significance of the equilibrium between oxidative and antioxidant levels, alongside...
Journal of Turkish Clinical Biochemistry
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2025-08-01
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DOI: 10.56615/tkbd.2025.08
Murat Akşit, Mustafa Terzioğlu, Merve Zeytinli Akşit, Tuba Kansu Altan, Banu İşbilen Başok, Ayfer Çolak
Aim: Quality improvement studies in clinical laboratories play a vital role in achieving accurate and reliable patient results. Measurement uncertainty is important for the quality and reliability of test results. Since laboratory results inherently involve uncertainty, ISO...
Journal of Turkish Clinical Biochemistry
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2023-12-01
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DOI: 10.56615/tkbd.2023.15
Büşra Akşit Koldaş, Tevfik Noyan
Aim: The aim of this study was (1) to compare the serum insulin, ghrelin, obestatin and, copeptin levels
between pregnant and non-pregnant women and (2) investigate the changes in these parameters in
pregnant women that measured at before and second hour after 75 gram (g)...
Journal of Turkish Clinical Biochemistry
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2021-04-01
Gamze Avcıoğlu, Yavuz Otal, Özcan Erel
Aim: Many mediators and biomarkers play a role in the pathogenesis of bacterial sepsis (BS) which is
still not fully illimunated.The aim was to analyze intracellular oxidised glutathione (GSSG)/reduced
glutathione (GSH) and serum thiol/disulfide (extracellular) homeostasis...
Journal of Turkish Clinical Biochemistry
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2022-04-01
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DOI: 10.56615/tkbd.2022.01
Gökhan Çakırca, Tülin Yazıcı
Aim: Six sigma is a quality management tool used to evaluate analytical process performance. We
evaluated the performance of biochemical and immunological tests on a Roche Cobas 8000 device in
our laboratory using sigma metrics.
Materials and Methods:...
Journal of Turkish Clinical Biochemistry
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2019-08-01
Okan Dikker, Mustafa Şahin
Aim: Lipid profile is used to determine the risk of cardiovascular diseases (CVD) and to monitor
treatment. Reference change value (RCV) represents the clinical significance of the variation between the
results of two consecutive tests and laboratory test results exceeding...
Journal of Turkish Clinical Biochemistry
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2019-08-01
Inanc Karakoyun, Fatma Demet Arslan
Aim: Pancreatic cancer (PC) is a disease with complex and poorly understood etiology. One of the
common risk factors of PC is diabetes mellitus (DM). Increased carbohydrate antigen (CA) 19-9 levels
can be used as a biomarker in diagnosis of PC. However, CA 19-9 levels have...
Journal of Turkish Clinical Biochemistry
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2020-12-01
Nejla Barış, Nevbahar Turgan, Biltan Ersöz
Recent research, concentrating on the significance of L-arginine, a basic amino acid, with respect to medical biochemistry is noteworthy. The fact that L-arginin is a nitrogen donor in nitric oxide (NO) biosynthesis provokes interest toward this amino acid. In healthy adults arginine is not...
Journal of Turkish Clinical Biochemistry
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2004-08-01
Gamze Avcioğlu, Yavuz Otal, Özcan Erel
Aim: Many mediators and biomarkers play a role in the pathogenesis of bacterial sepsis (BS) which is
still not fully illimunated. The aim was to analyze intracellular oxidised glutathione (GSSG)/reduced
glutathione (GSH) and serum thiol/disulfide (extracellular) homeostasis...
Journal of Turkish Clinical Biochemistry
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2021-12-01
Tugba Arıkan, Mehmet Kelles, Selman Sarıca, Metin Kılınc
Objective: It has been demonstrated that oxidative stress induced tissue damage plays a role in the
pathogenesis of several otolaryngological diseases. The aim of the present study was to evaluate the
selenium (Se), zinc (Zn) and copper (Cu) levels in the plasma of children...
Journal of Turkish Clinical Biochemistry
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2018-12-01
Pınar Bakyer, Esat Adıgüzel, Simin Rota, Nuran Sabir, Ilgaz Akdoğan, Birsen Yılmaz
Objective: The goal of this study was to investigate the correlation between the ultrasonographic measurements of subcutaneous adipose tissue thickness and serum lipid levels.
Materials and methods: Randomly selected 100 subjects (50 males and 50...
Journal of Turkish Clinical Biochemistry
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2003-12-01
Muzaffer Katar, Merve Çatak
Objective: Obesity represents a significant global health concern characterized by substantial metabolic abnormalities and a heightened risk of developing type 2 diabetes mellitus (T2DM). Novel peptides including irisin, adropin, and preptin have been shown to play important...
Journal of Turkish Clinical Biochemistry
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2026-08-25
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DOI: 10.65717/jtcb.2026.26021