Journal of Applied Laboratory Medicine最新文献

{"title":"The Pitfalls of Cardiac Troponin T Testing in Muscular Dystrophy.","authors":"Dan Wang, Jaime Noguez, Kathryn Mosher, Ira B Taub","doi":"10.1093/jalm/jfae046","DOIUrl":"10.1093/jalm/jfae046","url":null,"abstract":"","PeriodicalId":46361,"journal":{"name":"Journal of Applied Laboratory Medicine","volume":"9 5","pages":"1103-1105"},"PeriodicalIF":1.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142120864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating Laboratory Communications to NKF-WG Recommended Stakeholders during Implementation of the CKD-EPI 2021 Equation.","authors":"Shawn W Luby","doi":"10.1093/jalm/jfae019","DOIUrl":"10.1093/jalm/jfae019","url":null,"abstract":"<p><strong>Background: </strong>In 2022, the National Kidney Foundation's Laboratory Engagement Working Group (NKF-WG) released recommendations for clinical implementation of the race-free Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) 2021 estimated glomerular filtration rate (eGFR) equation.This study examined laboratory communications during CKD-EPI 2021 implementation including communication methods and delivery, content inclusion, and alignment with stakeholder inclusion as defined by the NKF-WG.</p><p><strong>Methods: </strong>An anonymous web-based survey was distributed to members of ADLM (AACC) and the American Society for Clinical Laboratory Science (ASCLS) in November 2022 to solicit laboratory directors of CLIA-licensed clinical laboratories in the United States. Seventeen questions covering topics related to implementation of CKD-EPI 2021, stakeholder inclusion, methods and timing of communications delivery, and content inclusion were surveyed.</p><p><strong>Results: </strong>All participating laboratories (n = 28) reported including physicians/advanced practitioners in implementation communications, while only 10.7% reported inclusion of patients. When reporting on methods of communication, 81.5% (n = 27) of respondents reported using multiple methods of communication with providers and 88.8% issued provider communications prior to implementation. In contrast, when patient communications were delivered, 87.5% (n = 8) issued these communications exclusively after CKD-EPI 2021 implementation and the majority (6 of 8) reported using only one method of communication during delivery. When reporting on content inclusion, 64.3% (n = 28) of laboratories reported including concerns regarding previous race-based eGFR equations in communications with physicians/advanced practitioners, while only 16.7% (n = 18) of those who included this information did so with patients.</p><p><strong>Conclusions: </strong>Participants reported limited engagement in CKD-EPI 2021 laboratory-to-patient implementation communications as well as limited inclusion of additional stakeholder groups, as defined in the NKF-WG recommendations. Laboratories utilized multiple communication methods and deliveries in physician/advanced practitioner communications; however, this strategy was not replicated when engaging with additional NKF-WG stakeholder groups.</p>","PeriodicalId":46361,"journal":{"name":"Journal of Applied Laboratory Medicine","volume":" ","pages":"809-815"},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140177069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Commentary on Resolved Myositis, Normal CPK, and Peaking Cardiac Troponin T.","authors":"Robert H Christenson","doi":"10.1093/jalm/jfae047","DOIUrl":"10.1093/jalm/jfae047","url":null,"abstract":"","PeriodicalId":46361,"journal":{"name":"Journal of Applied Laboratory Medicine","volume":" ","pages":"853-854"},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140866798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Commentary on Illegal Drug Use or Not-The Role of the Laboratory in Helping to Interpret Drug Test Results.","authors":"Melissa M Zhao, Nicole V Tolan","doi":"10.1093/jalm/jfae007","DOIUrl":"10.1093/jalm/jfae007","url":null,"abstract":"","PeriodicalId":46361,"journal":{"name":"Journal of Applied Laboratory Medicine","volume":" ","pages":"859-860"},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140289194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevalence of Gabapentinoid and Opioid Copositives in a Reference Laboratory Patient Population.","authors":"Jessica M Boyd, Brian N Kelly, Gwendolyn A McMillin","doi":"10.1093/jalm/jfae011","DOIUrl":"10.1093/jalm/jfae011","url":null,"abstract":"","PeriodicalId":46361,"journal":{"name":"Journal of Applied Laboratory Medicine","volume":" ","pages":"861-863"},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140050590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Screening for Primary Aldosteronism by Mass Spectrometry Versus Immunoassay Measurements of Aldosterone: A Prospective Within-Patient Study.","authors":"Sybille Fuld, Georgiana Constantinescu, Christina Pamporaki, Mirko Peitzsch, Manuel Schulze, Jun Yang, Lisa Müller, Aleksander Prejbisz, Andrzej Januszewicz, Hanna Remde, Lydia Kürzinger, Ulrich Dischinger, Matthias Ernst, Sven Gruber, Martin Reincke, Felix Beuschlein, Jacques W M Lenders, Graeme Eisenhofer","doi":"10.1093/jalm/jfae017","DOIUrl":"10.1093/jalm/jfae017","url":null,"abstract":"<p><strong>Background: </strong>Measurements of aldosterone by mass spectrometry are more accurate and less prone to interferences than immunoassay measurements, and may produce a more accurate aldosterone:renin ratio (ARR) when screening for primary aldosteronism (PA).</p><p><strong>Methods: </strong>Differences in diagnostic performance of the ARR using mass spectrometry vs immunoassay measurements of aldosterone were examined in 710 patients screened for PA. PA was confirmed in 153 patients and excluded in 451 others. Disease classifications were not achieved in 106 patients. Areas under receiver-operating characteristic curves (AUROC) and other measures were used to compare diagnostic performance.</p><p><strong>Results: </strong>Mass spectrometry-based measurements yielded lower plasma aldosterone concentrations than immunoassay measurements. For the ARR based on immunoassay measurements of aldosterone, AUROCs were slightly lower (P = 0.018) than those using mass spectrometry measurements (0.895 vs 0.906). The cutoff for the ARR to reach a sensitivity of 95% was 30 and 21.5 pmol/mU by respective immunoassay and mass spectrometry-based measurements, which corresponded to specificities of 57% for both. With data restricted to patients with unilateral PA, diagnostic sensitivities of 94% with specificities >81% could be achieved at cutoffs of 68 and 52 pmol/mU for respective immunoassay and mass spectrometry measurements.</p><p><strong>Conclusions: </strong>Mass spectrometry-based measurements of aldosterone for the ARR provide no clear diagnostic advantage over immunoassay-based measurements. Both approaches offer limited diagnostic accuracy for the ARR as a screening test. One solution is to employ the higher cutoffs to triage patients likely to have unilateral PA for further tests and possible adrenalectomy, while using the lower cutoffs to identify others for targeted medical therapy.German Clinical Trials Register ID: DRKS00017084.</p>","PeriodicalId":46361,"journal":{"name":"Journal of Applied Laboratory Medicine","volume":" ","pages":"752-766"},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140294942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Introduction to the Complete Blood Count for Clinical Chemists: Platelets.","authors":"Xander M R van Wijk, Zaraith Sanchez Oviol, William E Winter, Neil S Harris, Maximo J Marin","doi":"10.1093/jalm/jfae023","DOIUrl":"10.1093/jalm/jfae023","url":null,"abstract":"<p><strong>Background: </strong>The most ordered laboratory test worldwide is the complete blood count (CBC).</p><p><strong>Content: </strong>In this primer, an introduction to platelet testing in the context of the CBC is provided with a discussion of the laboratory evaluation of platelet abnormalities including thrombocytopenia and thrombocytosis.</p><p><strong>Summary: </strong>As clinical chemists continue to be tasked to direct laboratories outside of the traditional clinical chemistry sections such as hematology, expertise must be developed. This primer is dedicated to that effort.</p>","PeriodicalId":46361,"journal":{"name":"Journal of Applied Laboratory Medicine","volume":" ","pages":"833-847"},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140319509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Establishing the Reportable Interval for Routine Clinical Laboratory Tests: A Data-Driven Strategy Leveraging Retrospective Electronic Medical Record Data.","authors":"Ahmed M Zayed, Veroniek Saegeman, Nicolas Delvaux","doi":"10.1093/jalm/jfae021","DOIUrl":"10.1093/jalm/jfae021","url":null,"abstract":"<p><strong>Background: </strong>This paper presents a data-driven strategy for establishing the reportable interval in clinical laboratory testing. The reportable interval defines the range of laboratory result values beyond which reporting should be withheld. The lack of clear guidelines and methodology for determining the reportable interval has led to potential errors in reporting and patient risk.</p><p><strong>Methods: </strong>To address this gap, the study developed an integrated strategy that combines statistical analysis, expert review, and hypothetical outlier calculations. A large data set from an accredited clinical laboratory was utilized, analyzing over 124 million laboratory test records from 916 distinct tests. The Dixon test was applied to identify outliers and establish the highest and lowest non-outlier result values for each test, which were validated by clinical pathology experts. The methodology also included matching the reportable intervals with relevant Logical Observation Identifiers Names and Codes (LOINC) and Unified Code for Units of Measure (UCUM)-valid units for broader applicability.</p><p><strong>Results: </strong>Upon establishing the reportable interval for 135 routine laboratory tests (493 LOINC codes), we applied these to a primary care laboratory data set of 23 million records, demonstrating their efficacy with over 1% of result records identified as implausible.</p><p><strong>Conclusions: </strong>We developed and tested a data-driven strategy for establishing reportable intervals utilizing large electronic medical record (EMR) data sets. Implementing the established interval in clinical laboratory settings can improve autoverification systems, enhance data reliability, and reduce errors in patient care. Ongoing refinement and reporting of cases exceeding the reportable limits will contribute to continuous improvement in laboratory result management and patient safety.</p>","PeriodicalId":46361,"journal":{"name":"Journal of Applied Laboratory Medicine","volume":" ","pages":"776-788"},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140870324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retrospective Data Analysis Reveals Unusual Metabolism Pattern of Ethanol in Pediatrics as Compared to Adult and Geriatric Populations.","authors":"Kwaku Baryeh, Roy Zhou, Erin Brown, Gwendolyn A McMillin, Matthew D Krasowski, Kamisha L Johnson-Davis","doi":"10.1093/jalm/jfae045","DOIUrl":"10.1093/jalm/jfae045","url":null,"abstract":"<p><strong>Background: </strong>About 95% of consumed ethanol is metabolized by oxidative pathways. Less than 1% is metabolized via nonoxidative pathways: glucuronidation, sulfation, and the formation of fatty acid esters of ethanol. In neonates, the glucuronidation pathway has been reported to be underdeveloped but matures with age. This work compared the test results of patients' random urine samples submitted to our facility for ethyl glucuronide (EtG) and ethyl sulfate (EtS) measurements across pediatric and adult populations.</p><p><strong>Methods: </strong>Test results (n = 63 498) from urine samples tested for EtG and EtS by quantitative liquid chromatography-tandem mass spectrometry at our facility were utilized for this study. EtG and EtS concentrations were compared across the age partitions 0 to 17 years (pediatric), 18 to 80 years (adult), and 81 to 100 years (geriatric). Eight pediatric patients from a tertiary academic hospital contributed clinical context via abstracted clinical information.</p><p><strong>Results: </strong>Across the individual age partitions, 60% to 65% of patients had both EtG and EtS present in urine. Approximately 5% to 10% of patients had only EtG, and 25% to 35% had neither metabolite present. The lowest percentages (<1.5%) had EtS present in the absence of EtG. Markedly, no pediatric patients had only EtS present; compared to the adult population, this was statistically significant (Fisher exact test, P = 0.025).</p><p><strong>Conclusions: </strong>From the data presented in this work, EtG is more prevalent relative to EtS in urine samples of patients assessed for ethanol exposure.</p>","PeriodicalId":46361,"journal":{"name":"Journal of Applied Laboratory Medicine","volume":" ","pages":"767-775"},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140945872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Newborn Screening: Current Practice and Our Journey over the Last 60 Years.","authors":"Jing Cao, Marzia Pasquali, Patricia M Jones","doi":"10.1093/jalm/jfae020","DOIUrl":"10.1093/jalm/jfae020","url":null,"abstract":"<p><strong>Background: </strong>Inborn errors of metabolism comprise a set of more than 2000 known disorders which can result in significant morbidity and may be rapidly fatal. Diagnosing these disorders at birth and treating immediately, however, may often result in a normal to near-normal life for the affected infant. Thus, newborn screening (NBS) has saved or improved the lives of countless individuals since its inception in the 1960s.</p><p><strong>Content: </strong>This review covers NBS, from its early beginnings up to the current day practice. We follow the evolution of NBS, as well as describe the need and how disorders are added to NBS programs, the testing and how its performance is monitored, and the follow-up to the testing. We also briefly touch on NBS outside the United States.</p><p><strong>Summary: </strong>Newborn screening in the United States is a major public health success story and it continues to grow and evolve to cover more disorders and utilize new technological advances.</p>","PeriodicalId":46361,"journal":{"name":"Journal of Applied Laboratory Medicine","volume":" ","pages":"820-832"},"PeriodicalIF":1.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140177070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}