{"title":"Should we Continue to Monitor or Choose to Ignore the Mild Increase in CA19-9 after Surgery.","authors":"Liu Yang, Li Jinchang, Gu Wanjian","doi":"10.7754/Clin.Lab.2024.240420","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Different detection platforms can lead to significant differences in the results of CA19-9. Here, a case of a 38-year-old male colon cancer patient who underwent CA19-9 testing on two platforms after surgery.</p><p><strong>Methods: </strong>We first inspect the instrument to confirm its normal operation and good indoor quality control. Then, we conduct dilution experiments to eliminate interference from heterophilic antibodies, compare and analyze inherent differences with other platforms, and regularly follow up to dynamically monitor the patient's condition.</p><p><strong>Results: </strong>During follow-up, the patient's CA19-9 levels rose consistently on both platforms, leading to tumor recurrence two years later, missing optimal treatment.</p><p><strong>Conclusions: </strong>Dynamic monitoring of tumor markers should be based on a stable platform and combined with imaging examinations. For abnormal elevated results, humanistic care is needed to address the patient's fear and doubts about the test results.</p>","PeriodicalId":10384,"journal":{"name":"Clinical laboratory","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Clinical laboratory","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.7754/Clin.Lab.2024.240420","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MEDICAL LABORATORY TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Background: Different detection platforms can lead to significant differences in the results of CA19-9. Here, a case of a 38-year-old male colon cancer patient who underwent CA19-9 testing on two platforms after surgery.
Methods: We first inspect the instrument to confirm its normal operation and good indoor quality control. Then, we conduct dilution experiments to eliminate interference from heterophilic antibodies, compare and analyze inherent differences with other platforms, and regularly follow up to dynamically monitor the patient's condition.
Results: During follow-up, the patient's CA19-9 levels rose consistently on both platforms, leading to tumor recurrence two years later, missing optimal treatment.
Conclusions: Dynamic monitoring of tumor markers should be based on a stable platform and combined with imaging examinations. For abnormal elevated results, humanistic care is needed to address the patient's fear and doubts about the test results.
期刊介绍：
Clinical Laboratory is an international fully peer-reviewed journal covering all aspects of laboratory medicine and transfusion medicine. In addition to transfusion medicine topics Clinical Laboratory represents submissions concerning tissue transplantation and hematopoietic, cellular and gene therapies. The journal publishes original articles, review articles, posters, short reports, case studies and letters to the editor dealing with 1) the scientific background, implementation and diagnostic significance of laboratory methods employed in hospitals, blood banks and physicians'' offices and with 2) scientific, administrative and clinical aspects of transfusion medicine and 3) in addition to transfusion medicine topics Clinical Laboratory represents submissions concerning tissue transplantation and hematopoietic, cellular and gene therapies.
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