Biochemia MedicaPub Date : 2022-06-15DOI: 10.11613/BM.2022.020711
Vera Lukić, Svetlana Ignjatović
{"title":"Integrating moving average control procedures into the risk-based quality control plan in small-volume medical laboratories.","authors":"Vera Lukić, Svetlana Ignjatović","doi":"10.11613/BM.2022.020711","DOIUrl":"https://doi.org/10.11613/BM.2022.020711","url":null,"abstract":"<p><strong>Introduction: </strong>The modern approach to quality control (QC) in medical laboratories implies the development of a risk-based control plan. This paper aims to develop a risk-based QC plan for a laboratory with a small daily testing volume and to integrate the already optimized moving average (MA) control procedures into this plan.</p><p><strong>Materials and methods: </strong>A multistage bracketed QC plan for ten clinical chemistry analytes was made using a Westgard QC frequency calculator. Previously, MA procedures were optimized by the bias detection simulation method.</p><p><strong>Results: </strong>Aspartate aminotransferase, HDL-cholesterol and potassium had patient-risk sigma metrics greater than 6, albumin and cholesterol greater than 5, creatinine, chlorides, calcium and total proteins between 4 and 5, and sodium less than 4. Based on the calculated run sizes and characteristics of optimized MA procedures, for 6 tests, it was possible to replace the monitoring QC procedure with an MA procedure. For the remaining 4 tests, it was necessary to keep the monitoring QC procedure and introduce MA control for added security.</p><p><strong>Conclusion: </strong>This study showed that even in a laboratory with a small volume of daily testing, it is possible to make a risk-based QC plan and integrate MA control procedures into that plan.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9195605/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40479666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biochemia MedicaPub Date : 2022-06-15DOI: 10.11613/BM.2022.020706
Yonas Mulat Simachew, Tamara Antonić, Tamara Gojković, Sandra Vladimirov, Marija Mihajlović, Sanja Vujčić, Gordana Miloševski-Lomić, Jelena Vekić, Aleksandra Zeljković, Vesna Spasojević-Kalimanovska, Amira Peco-Antić, Dušan Paripović, Aleksandra Stefanović
{"title":"Lipoproteins and cholesterol homeostasis in paediatric nephrotic syndrome patients.","authors":"Yonas Mulat Simachew, Tamara Antonić, Tamara Gojković, Sandra Vladimirov, Marija Mihajlović, Sanja Vujčić, Gordana Miloševski-Lomić, Jelena Vekić, Aleksandra Zeljković, Vesna Spasojević-Kalimanovska, Amira Peco-Antić, Dušan Paripović, Aleksandra Stefanović","doi":"10.11613/BM.2022.020706","DOIUrl":"https://doi.org/10.11613/BM.2022.020706","url":null,"abstract":"<p><strong>Introduction: </strong>The aim of this study was to investigate lipoprotein particle distributions and the likelihood of achieving cholesterol homeostasis in the remission phase of nephrotic syndrome (NS) in paediatric patients. We hypothesized that lipoprotein particle distributions moved toward less atherogenic profile and that cholesterol homeostasis was achieved.</p><p><strong>Materials and methods: </strong>Thirty-three children, 2 to 9 years old with NS were recruited. Blood sampling took place both in the acute phase and during remission. Serum low-density lipoprotein particles (LDL) and high-density lipoprotein particles (HDL) were separated using non-denaturing polyacrylamide gradient gel (3-31%) electrophoresis. Serum non-cholesterols sterols (NCSs), desmosterol, lathosterol, 7-dehydrocholesterol (7-DHC), campesterol and β-sitosterol were measured by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS).</p><p><strong>Results: </strong>All patients had desirable serum HDL cholesterol concentrations during remission. The dominant lipoprotein diameters and LDL subclass distribution did not change significantly during follow-up. In contrast, HDL lipoprotein particle distribution shifted towards larger particles. The absolute concentration of desmosterol was significantly lower during remission (P = 0.023). β-sitosterol concentration markedly increased during remission (P = 0.005). Desmosterol/β-sitosterol (P < 0.001) and 7-DHC/β-sitosterol (P = 0.005) ratios significantly declined during disease remission.</p><p><strong>Conclusions: </strong>Favourable changes in the serum lipid profiles, HDL particle subclass distribution and cholesterol metabolism in paediatric patients with NS during remission took place. For the first time, we found that cholesterol homeostasis changed in favour of increased cholesterol absorption during disease remission. Nevertheless, complete cholesterol homeostasis was not achieved during disease remission.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9195603/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40479670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Artificial intelligence and thyroid disease management: considerations for thyroid function tests.","authors":"Damien Gruson, Pradeep Dabla, Sanja Stankovic, Evgenija Homsak, Bernard Gouget, Sergio Bernardini, Benoit Macq","doi":"10.11613/BM.2022.020601","DOIUrl":"10.11613/BM.2022.020601","url":null,"abstract":"<p><p>Artificial intelligence (AI) is transforming healthcare and offers new tools in clinical research, personalized medicine, and medical diagnostics. Thyroid function tests represent an important asset for physicians in the diagnosis and monitoring of pathologies. Artificial intelligence tools can clearly assist physicians and specialists in laboratory medicine to optimize test prescription, tests interpretation, decision making, process optimization, and assay design. Our article is reviewing several of these aspects. As thyroid AI models rely on large data sets, which often requires distributed learning from multi-center contributions, this article also briefly discusses this issue.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9195598/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40479669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biochemia MedicaPub Date : 2022-06-15DOI: 10.11613/BM.2022.020708
Serap Çuhadar, Hayat Özkanay-Yörük, Mehmet Köseoğlu, Kaan Katırcıoğlu
{"title":"Detection of preanalytical errors in arterial blood gas analysis.","authors":"Serap Çuhadar, Hayat Özkanay-Yörük, Mehmet Köseoğlu, Kaan Katırcıoğlu","doi":"10.11613/BM.2022.020708","DOIUrl":"https://doi.org/10.11613/BM.2022.020708","url":null,"abstract":"<p><strong>Introduction: </strong>Blood gas analysis (BGA) is an essential test used for years to provide vital information in critically ill patients. However, the instability of the blood gases is a problem. We aimed to evaluate time and temperature effects on blood gas stability.</p><p><strong>Materials and methods: </strong>Arterial blood was collected from 20 patients into syringes. Following BGA for baseline, syringes were divided into groups to stand at 4°C and 22°C for 30, 60, 90, 120 minutes. All were tested for pH, partial pressure of carbon dioxide (pCO<sub>2</sub>), partial pressure of oxygen (pO<sub>2</sub>), oxygen saturation (sO<sub>2</sub>), oxyhemoglobin (O<sub>2</sub>Hb), sodium, potassium, glucose, lactate, oxygen tension at 50% hemoglobin saturation (p50), and bicarbonate. A subgroup analysis was performed to detect the effect of air on results during storage. Percentage deviations were calculated and compared against the preset quality specifications for allowable total error.</p><p><strong>Results: </strong>At 4°C, pO<sub>2</sub> was the least stable parameter. At 22°C, pO<sub>2</sub> remained stable for 120 min, pH and glucose for 90 min, lactate and pCO<sub>2</sub> for 60 min. Glucose and lactate were stable when chilled. Air bubbles interfered pO<sub>2</sub> regardless of temperatures, whereas pCO<sub>2</sub> increased significantly at 22°C after 30 min, and pH decreased after 90 min. Bicarbonate, sO<sub>2</sub>, O<sub>2</sub>Hb, sodium, and potassium were the unaffected parameters.</p><p><strong>Conclusions: </strong>Correct BGA results are essential, and arterial sample is precious. Therefore, if immediate analysis cannot be performed, up to one hour, syringes stored at room temperature will give reliable results when care is taken to minimize air within the blood gas specimen.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9195608/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40479673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biochemia MedicaPub Date : 2022-06-15Epub Date: 2022-04-15DOI: 10.11613/BM.2022.020703
Lara Milevoj Kopčinović, Gordana Juričić, Adriana Bokulić, Ines Vukasović, Ivana Ćelap, Helena Čičak, Marija Kocijančić, Marija Miloš, Mila Lovrić, Marija Siter Kuprešanin, Snježana Hrabrić Vlah, Manuela Miletić
{"title":"Verification policies in Croatian medical biochemistry laboratories: a survey of the practice.","authors":"Lara Milevoj Kopčinović, Gordana Juričić, Adriana Bokulić, Ines Vukasović, Ivana Ćelap, Helena Čičak, Marija Kocijančić, Marija Miloš, Mila Lovrić, Marija Siter Kuprešanin, Snježana Hrabrić Vlah, Manuela Miletić","doi":"10.11613/BM.2022.020703","DOIUrl":"10.11613/BM.2022.020703","url":null,"abstract":"<p><strong>Introduction: </strong>The aim of this study was to screen practices used in verification procedures for methods/analysers among medical biochemistry laboratories (MBLs) in Croatia. We hypothesized that these procedures differ widely from laboratory to laboratory and wanted to gather specific data on steps used in the verification workflow.</p><p><strong>Materials and methods: </strong>In order to obtain data, an online survey was conducted. The survey, divided in two sections, contained 29 questions and statements addressing general characteristics and specific steps of the verification workflow of each individual MBL. The survey was disseminated among managers of all MBLs in Croatia.</p><p><strong>Results: </strong>A total of 108/196 (55%) laboratories participated in the survey. Forty nine MBLs were excluded from the second part of the survey: 14 have not implemented verification procedures, and 35 MBLs due to the absence of answers. The most relevant results of the second part of the survey showed that: 18/59 (0.31) of the responding MBLs have difficulties when defining acceptance criteria, 27/59 (0.46) used the Clinical and Laboratory Standards Institute protocol for precision estimation; the majority of MBLs used a median of 20 samples for method/analyser comparisons and estimated bias using internal quality control samples; reference intervals provided by external sources are mainly adopted; 60% of MBLs do not include linearity verification in their protocol and do not use the national document for the estimation of measurement uncertainty.</p><p><strong>Conclusions: </strong>Heterogeneous verification protocols are routinely utilized across Croatian MBLs which clearly confirms that a national document might help in the harmonization of verification procedures.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8996323/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48038949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biochemia MedicaPub Date : 2022-06-15DOI: 10.11613/BM.2022.020712
Frane Pastrovic, Anita Madir, Kristian Podrug, Marko Lucijanic, Tomislav Bokun, Marko Zelenika, Sanda Mustapic, Adriana Unic, Lovorka Derek, Ivica Grgurevic
{"title":"Use of biochemical parameters for non-invasive screening of oesophageal varices in comparison to elastography-based approach in patients with compensated advanced chronic liver disease.","authors":"Frane Pastrovic, Anita Madir, Kristian Podrug, Marko Lucijanic, Tomislav Bokun, Marko Zelenika, Sanda Mustapic, Adriana Unic, Lovorka Derek, Ivica Grgurevic","doi":"10.11613/BM.2022.020712","DOIUrl":"https://doi.org/10.11613/BM.2022.020712","url":null,"abstract":"<p><strong>Introduction: </strong>Oesophageal varices are routinely diagnosed by esophagogastroduodenoscopy (EGD), and their bleeding has high mortality. We aimed to evaluate diagnostic performance of biochemical tests in comparison to elastography-based approaches, as non-invasive alternatives to EGD, for ruling-out high risk oesophageal varices (HRV).</p><p><strong>Material and methods: </strong>Retrospective analysis of patients (N = 861) who underwent liver stiffness measurement (LSM) by transient elastography (TE) in a single centre over 5-year period, with available results of EGD (within 3 months from LSM). Only patients with suspicion of compensated advanced chronic liver disease (cACLD) defined by LSM ≥ 10 kPa were included comprising the final cohort of 73 subjects. Original and expanded Baveno VI criteria (B6C), controlled attenuation parameter (CAP), platelet count (PLT), aspartate aminotransferase to PLT ratio index (APRI), Fibrosis-4 index (FIB4), model for end stage liver disease (MELD) score were evaluated against the results of EGD that served as the reference method.</p><p><strong>Results: </strong>Analysed patients had median age 62 years, 59/73 (0.81) were males, 54/73 (0.74) had alcoholic/non-alcoholic fatty liver disease, and 21/73 (0.29) had HRV. In multivariate logistic regression analysis only LSM and PLT were independently associated with HRV. The best performing tests for ruling-out HRV (% of spared EGD; % of missed HRV) were respectively: LSM < 20 kPa (53.4%; 0%), B6C (38%; 0%), Expanded B6C (47.9%; 4.8%); PLT > 214x10<sup>9</sup>/L (21.9%; 0%); FIB4 ≤ 1.8 (21.4%; 0%), APRI ≤ 0.34 (12.3%; 0%). CAP, MELD = 6 alone or combined with PLT > 150(x10<sup>9</sup>/L) did not show acceptable performance.</p><p><strong>Conclusion: </strong>The best performing biochemical tests for ruling-out HRV in our cohort of patients were PLT and FIB-4, but they were still outperformed by elastography-based approaches.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9195609/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40479668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biochemia MedicaPub Date : 2022-06-15DOI: 10.11613/BM.2022.020705
Farrokh Habibzadeh, Parham Habibzadeh, Mahboobeh Yadollahie, Mohammad M Sajadi
{"title":"Determining the SARS-CoV-2 serological immunoassay test performance indices based on the test results frequency distribution.","authors":"Farrokh Habibzadeh, Parham Habibzadeh, Mahboobeh Yadollahie, Mohammad M Sajadi","doi":"10.11613/BM.2022.020705","DOIUrl":"10.11613/BM.2022.020705","url":null,"abstract":"<p><strong>Introduction: </strong>Coronavirus disease 2019 (COVID-19) is known to induce robust antibody response in most of the affected individuals. The objective of the study was to determine if we can harvest the test sensitivity and specificity of a commercial serologic immunoassay merely based on the frequency distribution of the SARS-CoV-2 immunoglobulin (Ig) G concentrations measured in a population-based seroprevalence study.</p><p><strong>Materials and methods: </strong>The current study was conducted on a subset of a previously published dataset from the canton of Geneva. Data were taken from two non-consecutive weeks (774 samples from May 4-9, and 658 from June 1-6, 2020). Assuming that the frequency distribution of the measured SARS-CoV-2 IgG is binormal (an educated guess), using a non-linear regression, we decomposed the distribution into its two Gaussian components. Based on the obtained regression coefficients, we calculated the prevalence of SARS-CoV-2 infection, the sensitivity and specificity, and the most appropriate cut-off value for the test. The obtained results were compared with those obtained from a validity study and a seroprevalence population-based study.</p><p><strong>Results: </strong>The model could predict more than 90% of the variance observed in the SARS-CoV-2 IgG distribution. The results derived from our model were in good agreement with the results obtained from the seroprevalence and validity studies. Altogether 138 of 1432 people had SARS-CoV-2 IgG ≥ 0.90, the cut-off value which maximized the Youden's index. This translates into a true prevalence of 7.0% (95% confidence interval 5.4% to 8.6%), which is in keeping with the estimated prevalence of 7.7% derived from our model. Our model can provide the true prevalence.</p><p><strong>Conclusions: </strong>Having an educated guess about the distribution of test results, the test performance indices can be derived with acceptable accuracy merely based on the test results frequency distribution without the need for conducting a validity study and comparing the test results against a gold-standard test.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9195604/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10309220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biochemia MedicaPub Date : 2022-06-15DOI: 10.11613/BM.2022.020713
Conrad Lacom, Alexander Tolios, Markus W Löffler, Beate Eichelberger, Peter Quehenberger, Eva Schaden, Marion Wiegele
{"title":"Assay validity of point-of-care platelet function tests in thrombocytopenic blood samples.","authors":"Conrad Lacom, Alexander Tolios, Markus W Löffler, Beate Eichelberger, Peter Quehenberger, Eva Schaden, Marion Wiegele","doi":"10.11613/BM.2022.020713","DOIUrl":"10.11613/BM.2022.020713","url":null,"abstract":"<p><strong>Introduction: </strong>Point-of-care (POC) platelet function tests are faster and easier to perform than in-depth assessment by flow cytometry. At low platelet counts, however, POC tests are prone to assess platelet function incorrectly. Lower limits of platelet count required to obtain valid test results were defined and a testing method to facilitate comparability between different tests was established.</p><p><strong>Materials and methods: </strong>We assessed platelet function in whole blood samples of healthy volunteers at decreasing platelet counts (> 100, 80-100, 50-80, 30-50 and < 30 x10<sup>9</sup>/L) using two POC tests: impedance aggregometry and <i>in-vitro</i> bleeding time. Flow cytometry served as the gold standard. The number of platelets needed to reach 50% of the maximum function (ED<sub>50</sub>) and the lower reference limit (ED<sub>ref</sub>) were calculated to define limits of test validity.</p><p><strong>Results: </strong>The minimal platelet count required for reliable test results was 100 x10<sup>9</sup>/L for impedance aggregometry and <i>in-vitro</i> bleeding time but only 30 x10<sup>9</sup>/L for flow cytometry. Comparison of ED<sub>50</sub> and ED<sub>ref</sub> showed significantly lower values for flow cytometry than either POC test (P value < 0.05) but no difference between POC tests nor between the used platelet agonists within a test method.</p><p><strong>Conclusion: </strong>Calculating the ED<sub>50</sub> and ED<sub>ref</sub> provides an effective way to compare values from different platelet function assays. Flow cytometry enables correct platelet function testing as long as platelet count is > 30 x10<sup>9</sup>/L whereas impedance aggregometry and <i>in-vitro</i> bleeding time are inconsistent unless platelet count is > 100 x10<sup>9</sup>/L.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.8,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9195599/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40479674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biochemia MedicaPub Date : 2022-06-15DOI: 10.11613/BM.2022.020707
Zeyu Sun, Jiatong Chai, Qi Zhou, Jiancheng Xu
{"title":"Establishment of gender- and age-specific reference intervals for serum liver function tests among the elderly population in northeast China: a retrospective study.","authors":"Zeyu Sun, Jiatong Chai, Qi Zhou, Jiancheng Xu","doi":"10.11613/BM.2022.020707","DOIUrl":"https://doi.org/10.11613/BM.2022.020707","url":null,"abstract":"<p><strong>Introduction: </strong>Reference intervals (RIs) for younger population may not apply to the elderly population. The aim of this study was to establish gender- and age-specific RIs for serum liver function tests among the elderly population and to compare with younger population RIs currently used in China and other countries.</p><p><strong>Materials and methods: </strong>This was a retrospective study, and subjects (≥ 18 year-old) were recruited from the laboratory information system (LIS) at the First Hospital of Jilin University between April 2020 and April 2021. The following parameters were collected: aspartate aminotransferase (AST), alanine aminotransferase (ALT), gamma-glutamyltransferase (GGT), alkaline phosphatase (ALP), total protein (TP), albumin (ALB), total bilirubin (TBIL), and direct bilirubin (DBIL). The Tukey method was used to eliminate outliers. Reference intervals were established by the nonparametric method.</p><p><strong>Results: </strong>A total of 23,597 healthy individuals were enrolled in the study. From all parameters AST, ALT, TP and ALB required no gender partition, while ALT, GGT, TP, ALB and DBIL required different partitions for age. Activities and concentrations of ALT, ALB, and TP showed a downward trend in the elderly aged 60-89. In contrast, DBIL showed a gradual upward trend.</p><p><strong>Conclusion: </strong>The RIs for liver function tests among healthy elderly population were different from those among young population in China. There were apparent gender and age differences in the RIs of liver function for elderly and significant differences compared with national standards and RIs in other countries. Therefore, it is necessary to establish gender- and age-specific RIs for serum liver function tests among the elderly population.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9195600/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40479667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Biochemia MedicaPub Date : 2022-06-15DOI: 10.11613/BM.2022.021201
Anamarija Mladinić, Livia Puljak, Zvonimir Koporc
{"title":"Corrigendum to: Post-GDPR survey of data protection officers in research and non-research institutions in Croatia: a cross-sectional study.","authors":"Anamarija Mladinić, Livia Puljak, Zvonimir Koporc","doi":"10.11613/BM.2022.021201","DOIUrl":"https://doi.org/10.11613/BM.2022.021201","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.11613/BM.2021.030703.].</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9195602/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40479672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}