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Interference of anti-nuclear antibodies on determination of anti-neutrophil cytoplasmic antibodies in patients suspected of vasculitis: a case series. 疑似血管炎患者抗核抗体对抗中性粒细胞胞浆抗体测定的干扰:一系列病例。
IF 3.3 3区 医学
Biochemia Medica Pub Date : 2023-10-15 Epub Date: 2023-08-05 DOI: 10.11613/BM.2023.031001
Mala Mahto, Neha Rai, Pulak Ranjan Das, Saurabh Karmakar, Divendu Bhushan
{"title":"Interference of anti-nuclear antibodies on determination of anti-neutrophil cytoplasmic antibodies in patients suspected of vasculitis: a case series.","authors":"Mala Mahto,&nbsp;Neha Rai,&nbsp;Pulak Ranjan Das,&nbsp;Saurabh Karmakar,&nbsp;Divendu Bhushan","doi":"10.11613/BM.2023.031001","DOIUrl":"10.11613/BM.2023.031001","url":null,"abstract":"<p><p>Anti-neutrophil cytoplasmic antibodies (ANCA) are mainly associated with medium and small vessel vasculitis. Two main methodologies currently available for detection of these antibodies are indirect immunofluorescence (IIF) and monospecific proteinase 3 (PR3) and myeloperoxidase (MPO) based immunoassays. However, well-defined guidelines regarding mode of testing for ANCA in laboratories still don't exist, leading to problems in diagnosis and further patient management. Anti-neutrophil cytoplasmic antibodies testing by IIF and enzyme linked immunosorbent assay (ELISA) often pose a significant challenge in diseases other than vasculitis and in overlapping autoimmune conditions. Anti-neutrophil cytoplasmic antibodies reporting by IIF can be challenging in certain circumstances. This case series aims to discuss four cases with probable interference of anti-nuclear antibodies (ANA) during ANCA testing by IIF resulting in ANCA false positivity. All four cases on subsequent reflex testing by line immunoassay (LIA) for PR3, MPO and glomerular basement membrane (GBM) antigens proved otherwise. While analysing for the presence of ANCA by IIF, the possible interference of ANA leading to a false positive ANCA result should be kept in mind and alternative methods of testing like ELISA, extended granulocyte based IIF assays with MPO and PR3 coated beads, <i>etc</i>., should also be advised. Probability of atypical ANCA in diseases other than vasculitis should also be considered in case of ambiguous results.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10373060/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9954831","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}
引用次数: 0
Blood alcohol concentration in the clinical laboratory: a narrative review of the preanalytical phase in diagnostic and forensic testing 临床实验室血液酒精浓度:诊断和法医检测分析前阶段的叙述性回顾
IF 3.3 3区 医学
Biochemia Medica Pub Date : 2023-10-05 DOI: 10.11613/bm.2024.010501
Cristiano Ialongo
{"title":"Blood alcohol concentration in the clinical laboratory: a narrative review of the preanalytical phase in diagnostic and forensic testing","authors":"Cristiano Ialongo","doi":"10.11613/bm.2024.010501","DOIUrl":"https://doi.org/10.11613/bm.2024.010501","url":null,"abstract":"The analysis of blood alcohol concentration (BAC), a pivotal toxicological test, concerns acute alcohol intoxication (AAI) and driving under the influence (DUI). As such, BAC presents an organizational challenge for clinical laboratories, with unique complexities due to the need for forensic defensibility as part of the diagnostic process. Unfortunately, a significant number of scientific investigations dealing with the subject present discrepancies that make it difficult to identify optimal practices in sample collection, transportation, handling, and preparation. This review provides a systematic analysis of the preanalytical phase of BAC that aims to identify and explain the chemical, physiological, and pharmacological mechanisms underlying controllable operational factors. Nevertheless, it seeks evidence for the necessity to separate preanalytical processes for diagnostic and forensic BAC testing. In this regard, the main finding of this review is that no literature evidence supports the necessity to differentiate preanalytical procedures for AAI and DUI, except for the traceability throughout the chain of custody. In fact, adhering to correct preanalytical procedures provided by official bodies such as European federation of clinical chemistry and laboratory medicine for routine phlebotomy ensures both diagnostic accuracy and forensic defensibility of BAC. This is shown to depend on the capability of modern pre-evacuated sterile collection tubes to control major factors influencing BAC, namely non-enzymatic oxidation and microbial contamination. While certain restrictions become obsolete with such devices, as the use of sodium fluoride (NaF) for specific preservation of forensic BAC, this review reinforces the recommendation to use non-alcoholic disinfectants as a means to achieve “error-proof” procedures in challenging operational environments like the emergency department.","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138541579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Coffee intake one hour prior to phlebotomy produces no clinically significant changes in routine biochemical test results. 在静脉切开术前一小时摄入咖啡对常规生化测试结果没有显著的临床变化。
IF 3.3 3区 医学
Biochemia Medica Pub Date : 2023-06-15 DOI: 10.11613/BM.2023.020705
Silvia F Benozzi, Gisela Unger, Amparo Campion, Pablo G Milano, Graciela L Pennacchiotti
{"title":"Coffee intake one hour prior to phlebotomy produces no clinically significant changes in routine biochemical test results.","authors":"Silvia F Benozzi,&nbsp;Gisela Unger,&nbsp;Amparo Campion,&nbsp;Pablo G Milano,&nbsp;Graciela L Pennacchiotti","doi":"10.11613/BM.2023.020705","DOIUrl":"https://doi.org/10.11613/BM.2023.020705","url":null,"abstract":"<p><strong>Introduction: </strong>Although current guidelines recommend not drinking coffee prior to phlebotomy, our hypothesis is that drinking coffee does not affect the clinical interpretation of biochemical and haematological test results.</p><p><strong>Materials and methods: </strong>Twenty-seven volunteers were studied in basal state (T0) and 1h after (T1) drinking coffee. Routine haematological (Sysmex-XN1000 analyser) and biochemistry parameters (Vitros 4600 analyser) were studied. Results were compared using the Wilcoxon test (P < 0.05). A clinical change was considered when mean percent difference (MD%) was higher than the reference change value (RCV).</p><p><strong>Results: </strong>Coffee intake produced statistically, but not clinically, significant: i) increases in haemoglobin (P = 0.009), mean cell haemoglobin concentration (P = 0.044), neutrophils (P = 0.001), albumin (P = 0.001), total protein (P = 0.000), cholesterol (P = 0.025), high density lipoprotein cholesterol (P = 0.007), uric acid (P = 0.011), calcium (P = 0.001), potassium (P = 0.010), aspartate aminotransferase (P = 0.001), amylase (P = 0.026), and lactate dehydrogenase (P = 0.001), and ii) decreases in mean cell volume (P = 0.002), red cell distribution width (P = 0.001), eosinophils (P = 0.002), and lymphocytes (P = 0.001), creatinine (P = 0.001), total bilirubin (P = 0.012), phosphorus (P = 0.001), magnesium (P = 0.007), and chloride (P = 0.001).</p><p><strong>Conclusion: </strong>Drinking a cup of coffee 1 hour prior to phlebotomy produces no clinically significant changes in routine biochemical and haematological test results.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10231766/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9647589","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}
引用次数: 0
Drug interference with biochemical laboratory tests. 药物干扰生化实验室测试
IF 3.3 3区 医学
Biochemia Medica Pub Date : 2023-06-15 DOI: 10.11613/BM.2023.020601
Jasmina Katanić, Bojan Stanimirov, Vanesa Sekeruš, Maja Đanić, Nebojša Pavlović, Momir Mikov, Karmen Stankov
{"title":"Drug interference with biochemical laboratory tests.","authors":"Jasmina Katanić,&nbsp;Bojan Stanimirov,&nbsp;Vanesa Sekeruš,&nbsp;Maja Đanić,&nbsp;Nebojša Pavlović,&nbsp;Momir Mikov,&nbsp;Karmen Stankov","doi":"10.11613/BM.2023.020601","DOIUrl":"https://doi.org/10.11613/BM.2023.020601","url":null,"abstract":"<p><p>Clinical laboratory practice represents an essential part of clinical decision-making, as it influences 60-70% of medical decisions at all levels of health care. Results of biochemical laboratory tests (BLTs) have a key role in establishment of adequate diagnosis as well as in evaluation of treatment progress and outcome. The prevalence of drug-laboratory test interactions (DLTIs) is up to 43% of patients who had laboratory results influenced by drugs. Unrecognized DLTIs may lead to misinterpreted BLTs results, incorrect or delayed diagnosis, extra costs for unnecessary additional tests or inadequate therapy, as all may cause false clinical decisions. The significance of timely and adequate recognition of DLTIs is to prevent common clinical consequences such as incorrectly interpreted test results, delayed or non-treated condition due to erroneous diagnosis or unnecessary extra tests or therapy. Medical professionals should be educated that it is essential to obtain patient data about medications especially for the drugs used in the last 10 days before biological material collection. Our mini-review aims to provide a comprehensive overview of the current state in this important domain of medical biochemistry with detailed analysis of the effect of drugs on BLTs and to give detailed information to medical specialists.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10152617/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9479380","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}
引用次数: 0
Definition of icteric interference index for six biochemical analytes. 六种生化分析物黄疸干扰指数的定义。
IF 3.3 3区 医学
Biochemia Medica Pub Date : 2023-06-15 DOI: 10.11613/BM.2023.020702
Ruth Cano-Corres, Gemma Sole-Enrech, Maria Isabel Aparicio-Calvente
{"title":"Definition of icteric interference index for six biochemical analytes.","authors":"Ruth Cano-Corres,&nbsp;Gemma Sole-Enrech,&nbsp;Maria Isabel Aparicio-Calvente","doi":"10.11613/BM.2023.020702","DOIUrl":"https://doi.org/10.11613/BM.2023.020702","url":null,"abstract":"<p><strong>Introduction: </strong>Icterus, if not detected, can affect the validity of results delivered by clinical laboratories, leading to erroneous results. This study aims to define bilirubin interference for some biochemical analytes and compare it with the manufacturer's data.</p><p><strong>Material and methods: </strong>Serum pools prepared with outpatients' samples were spiked with increasing bilirubin concentration (Merck, reference14370, Darmstadt, Germany) up to 513 µmol/L in order to evaluate the bias for the following biochemical analytes: creatinine (CREA), creatine kinase (CK), cholesterol (CHOL), gamma-glutamyltransferase (GGT), high-density lipoprotein cholesterol (HDL), and total protein (TP). For each analyte, six pools of different concentrations were prepared. Measurements were made employing Cobas 8000 analyser c702-502, Roche Diagnostics (Mannheim, Germany). This study employed a study procedure defined by the Spanish Society of Laboratory Medicine.</p><p><strong>Results: </strong>Obtained bilirubin concentrations producing a negative interference were 103 µmol/L for CHOL, 205 µmol/L for TP and 410 µmol/L for CK, but only for CK values less than 100 U/L. Bilirubin concentrations lower than 513 µmol/L do not produce interference for HDL and GGT. Finally, for the studied bilirubin concentrations, there is no interference for CREA higher than 80 µmol/L.</p><p><strong>Conclusion: </strong>Icterus interferences have been defined for each analyte, observing differences compared to data provided by the manufacturer. The evidence indicates that each laboratory should evaluate icteric interferences to ensure the high quality of the delivered results, thus benefiting patient care.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10231764/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9653340","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}
引用次数: 0
Distal renal tubular acidosis in a patient with Hashimoto's thyroiditis: a case report. 桥本甲状腺炎患者远端肾小管酸中毒1例报告。
IF 3.3 3区 医学
Biochemia Medica Pub Date : 2023-06-15 DOI: 10.11613/BM.2023.020802
Nontembiso Mhlana, Marizna Korf, Mogamat Razeen Davids, Mogamat-Yazied Chothia
{"title":"Distal renal tubular acidosis in a patient with Hashimoto's thyroiditis: a case report.","authors":"Nontembiso Mhlana,&nbsp;Marizna Korf,&nbsp;Mogamat Razeen Davids,&nbsp;Mogamat-Yazied Chothia","doi":"10.11613/BM.2023.020802","DOIUrl":"https://doi.org/10.11613/BM.2023.020802","url":null,"abstract":"<p><p>Renal tubular acidosis (RTA) is a rare disorder that can be inherited or acquired, and results in an inability of the kidneys to maintain normal acid-base balance. We present a case of recurrent, severe hypokalaemia and rhabdomyolysis in a young woman who had an associated normal anion gap metabolic acidosis and was subsequently diagnosed with distal RTA associated with Hashimoto's thyroiditis. Distal RTA associated with Hashimoto's thyroiditis is rare and probably develops because of autoimmune-mediated mechanisms, causing an inability of the H<sup>+</sup>-ATPase pump in alpha-intercalated cells of the cortical collecting duct to secrete H<sup>+</sup>, with subsequent failure of urinary acidification. In this case, this hypothesis was supported by the exclusion of common genetic mutations associated with distal RTA. We illustrate that utilizing a systematic, physiology-based approach for challenging electrolyte and acid-base disorders enables identification of the root cause and underlying disease mechanisms.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10231765/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9647590","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}
引用次数: 0
Reply to letters to the editor entitled "Bias, the unfinished symphony" and "Bias estimation for Sigma metric calculation: arithmetic mean versus quadratic mean". 回复给编辑的题为“偏差,未完成的交响曲”和“Sigma度量计算的偏差估计:算术平均值与二次平均值”的信件。
IF 3.3 3区 医学
Biochemia Medica Pub Date : 2023-06-15 DOI: 10.11613/BM.2023.020401
Murat Keleş
{"title":"Reply to letters to the editor entitled \"Bias, the unfinished symphony\" and \"Bias estimation for Sigma metric calculation: arithmetic mean versus quadratic mean\".","authors":"Murat Keleş","doi":"10.11613/BM.2023.020401","DOIUrl":"https://doi.org/10.11613/BM.2023.020401","url":null,"abstract":"©Copyright by Croatian Society of Medical Biochemistry and Laboratory Medicine. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) which permits users to read, download, copy, distribute, print, search, or link to the full texts of these articles in any medium or format and to remix, transform and build upon the material, provided the original work is properly cited and any changes properly indicated .","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10152614/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9428746","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}
引用次数: 0
Establishment of reference intervals for complete blood count in times of COVID-19 and vaccination. 建立COVID-19和疫苗接种期间全血细胞计数参考区间。
IF 3.3 3区 医学
Biochemia Medica Pub Date : 2023-06-15 DOI: 10.11613/BM.2023.020701
Claudia Mendieta-Gutiérrez, Selene Chávez-González, Brenda Ivonne Rodríguez-Romero, Jazmín Anahí Sánchez-Garrido, Arturo Figueroa-Gómez, Jesús Bernabé Licona-Vela, Arturo Cuauhtémoc Juárez-Pérez, Alejandro Cabello-López, Guadalupe Aguilar-Madrid, Carmina Jiménez-Ramírez
{"title":"Establishment of reference intervals for complete blood count in times of COVID-19 and vaccination.","authors":"Claudia Mendieta-Gutiérrez,&nbsp;Selene Chávez-González,&nbsp;Brenda Ivonne Rodríguez-Romero,&nbsp;Jazmín Anahí Sánchez-Garrido,&nbsp;Arturo Figueroa-Gómez,&nbsp;Jesús Bernabé Licona-Vela,&nbsp;Arturo Cuauhtémoc Juárez-Pérez,&nbsp;Alejandro Cabello-López,&nbsp;Guadalupe Aguilar-Madrid,&nbsp;Carmina Jiménez-Ramírez","doi":"10.11613/BM.2023.020701","DOIUrl":"https://doi.org/10.11613/BM.2023.020701","url":null,"abstract":"<p><strong>Introduction: </strong>COVID-19 and vaccination may affect some parameters of the complete blood count (CBC). The aim of this study was to determine reference intervals (RI) of CBC in healthy population with different COVID-19 and vaccination backgrounds and compare them with those established previously.</p><p><strong>Materials and methods: </strong>A cross-sectional study was conducted in donors who attended the Traumatology Hospital \"Dr. Victorio de la Fuente Narváez\" (HTVFN) from June to September 2021. Reference intervals were established using the non-parametric method on Sysmex XN-1000. For differences between groups with different COVID-19 and vaccination backgrounds, non-parametric tests were used.</p><p><strong>Results: </strong>The RI were established in 156 men and 128 women. Haemoglobin (Hb), haematocrit (Hct), red blood cells (RBC), platelets (Plt), mean platelets volume (MPV), monocytes and relative neutrophils were higher in men than women (P < 0.001). The percentiles of Hb, Hct, RBC, MPV and relative monocytes showed higher values; Plt, white blood cells (WBC), lymphocytes, monocytes, neutrophils, eosinophils and absolute basophils, the 2.5th was higher and the 97.5th was lower; for lymphocytes and relative neutrophils, both percentiles had a trend toward lower values, compared to previous RI. Differences between groups with different COVID-19 and vaccination backgrounds, in lymphocytes (P = 0.038), neutrophils (P = 0.017) and eosinophils (P = 0.018) in men; Hct (P = 0.014), RDW (P = 0.023) in women and MPV (P = 0.001) in both, were not considered pathological.</p><p><strong>Conclusions: </strong>The RI for the CBC were established in a Mestizo-Mexican population with different COVID-19 and vaccination backgrounds, so should be updated and validated in different hospitals close to the HTVFN that use the same analyser.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10152613/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9479375","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}
引用次数: 0
Androgens in women: Establishing reference intervals for dehydroepiandrostenedione sulphate and androstenedione on the Roche Cobas. 女性中的雄激素:建立罗氏Cobas上的硫酸脱氢表雄烯二酮和雄烯二酮的参考区间。
IF 3.3 3区 医学
Biochemia Medica Pub Date : 2023-06-15 DOI: 10.11613/BM.2023.020706
Adriana Bokulić, Ivana Zec, Domagoj Marijančević, Sanja Goreta
{"title":"Androgens in women: Establishing reference intervals for dehydroepiandrostenedione sulphate and androstenedione on the Roche Cobas.","authors":"Adriana Bokulić,&nbsp;Ivana Zec,&nbsp;Domagoj Marijančević,&nbsp;Sanja Goreta","doi":"10.11613/BM.2023.020706","DOIUrl":"https://doi.org/10.11613/BM.2023.020706","url":null,"abstract":"<p><strong>Introduction: </strong>Immunoassays are the most common method in routine practice for measuring androgens in women. Study's aim was to establish new population specific indirect reference intervals (RI) for dehydroepiandrostenedione sulphate (DHEAS) and for new androstenedione test available on automated Roche Cobas electrochemiluminescent immunoassay method.</p><p><strong>Materials and methods: </strong>From extracted laboratory records, testosterone, sex hormone binding globulin and follicle-stimulating hormone were used as reference tests to exclude possibly diseased women. After the data selection steps, the study included 3500 subjects for DHEAS and 520 for androstenedione aged 20-45 years. To evaluate the need for age partitioning, we calculated standard deviation ratio and bias ratio. For each hormone, 90% and 95% RIs were calculated with appropriate statistical method.</p><p><strong>Results: </strong>Total age group (20-45 years) 95% RIs were: 2.77-11.50 µmol/L for DHEAS and 2.48-8.89 nmol/L for androstenedione. Age-stratified 95% RIs for DHEAS were: 3.65-12.76 µmol/L (20-25 years); 2.97-11.50 µmol/L (25-35 years) and 2.30-9.83 µmol/L (35-45 years). Age-stratified 95% RIs for androstenedione were: 3.02-9.43 nmol/L (20-30 years) and 2.23-7.75 nmol/L (30-45 years).</p><p><strong>Conclusion: </strong>New RIs for DHEAS were slightly wider for age group 20-25 and 35-45, while the differences in the age group 25-35 years were more pronounced. Androstenedione RI showed significantly higher concentrations than the manufacturer's. Age-related decrease of androgens should be considered when calculating RIs. We propose population specific, age-stratified RIs for DHEAS and androstenedione on electrochemiluminescent method, which should improve test interpretation in women of reproductive age.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10231767/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9653339","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}
引用次数: 0
Higher estimated plasma volume status is associated with increased thrombotic risk and impaired survival in patients with primary myelofibrosis. 原发性骨髓纤维化患者较高的估计血浆容量状态与血栓形成风险增加和生存受损相关。
IF 3.3 3区 医学
Biochemia Medica Pub Date : 2023-06-15 DOI: 10.11613/BM.2023.020901
Marko Lucijanic, Ivan Krecak, Ena Soric, Anica Sabljic, Davor Galusic, Hrvoje Holik, Vlatka Perisa, Martina Moric Peric, Ivan Zekanovic, Rajko Kusec
{"title":"Higher estimated plasma volume status is associated with increased thrombotic risk and impaired survival in patients with primary myelofibrosis.","authors":"Marko Lucijanic,&nbsp;Ivan Krecak,&nbsp;Ena Soric,&nbsp;Anica Sabljic,&nbsp;Davor Galusic,&nbsp;Hrvoje Holik,&nbsp;Vlatka Perisa,&nbsp;Martina Moric Peric,&nbsp;Ivan Zekanovic,&nbsp;Rajko Kusec","doi":"10.11613/BM.2023.020901","DOIUrl":"https://doi.org/10.11613/BM.2023.020901","url":null,"abstract":"<p><strong>Introduction: </strong>Blood plasma represents a large reservoir of cytokines and other mediators of inflammation. Higher estimated plasma volume status (ePVS) has been shown to correlate with increased thrombotic risk in polycythemia vera patients, but its clinical and prognostic associations in patients with myelofibrosis are unknown which we aim to evaluate in this study.</p><p><strong>Materials and methods: </strong>We retrospectively analysed a multicentric cohort of 238 patients with primary (PMF) and secondary myelofibrosis (SMF). Estimated plasma volume status was calculated using the Strauss-derived Duarte formula. Overall survival (OS) and time to thrombosis (TTT) considering both arterial and venous thromboses were primary endpoints of interest.</p><p><strong>Results: </strong>Median ePVS was 5.8 dL/g and it did not significantly differ between PMF and SMF patients. Patients with more advanced disease features, more pronounced inflammation and higher comorbidity burden had higher ePVS. Higher ePVS (> 5.6 dL/g) was associated with shorter OS in PMF (unadjusted hazard ratio, HR = 2.8, 95% confidence interval, CI (1.79-4.41), P < 0.001) and SMF (unadjusted HR = 2.55, 95% CI (1.1-5.71), P =0.025) and with shorter TTT in PMF (> 7 dL/g, unadjusted HR = 4.1, 95% CI (1.44-11.59), P = 0.009) patients. Associations with OS diminished in multivariate analyses after adjustments for the dynamic-international-prognostic-scoring-system (DIPSS) and myelofibrosis-secondary-to-PV-and ET-prognostic-model (MYSEC-PM), respectively. Association with TTT remained significant independently of JAK2 mutation, white blood cell count and chronic kidney disease.</p><p><strong>Conclusions: </strong>Myelofibrosis patients with more advanced disease features and more pronounced inflammation have higher ePVS, indicative of expanded plasma volume. Higher ePVS is associated with impaired survival in PMF and SMF and higher thrombotic risk in PMF patients.</p>","PeriodicalId":9021,"journal":{"name":"Biochemia Medica","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10152616/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9479377","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}
引用次数: 4
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