{"id":13827,"date":"2024-07-27T11:23:35","date_gmt":"2024-07-27T09:23:35","guid":{"rendered":"https:\/\/blog.biomed.de\/new-ivdr-requires-independent-quality-controls\/"},"modified":"2024-07-31T10:56:54","modified_gmt":"2024-07-31T08:56:54","slug":"new-ivdr-requires-independent-quality-controls","status":"publish","type":"post","link":"https:\/\/blog.biomed.de\/en\/new-ivdr-requires-independent-quality-controls\/","title":{"rendered":"New IVDR requires independent quality controls"},"content":{"rendered":"

\u201cAre you addicted?\u201d This is the title of Oswald Sonntag\u2019s report on independent quality controls and their significance in the magazine Trillium Diagnostik TD4\/2019, starting on page 156.<\/p>\n

\"pastedGraphic.png\"ISO 15189 indicates independent quality controls. The IVDR now also sets new standards for independent control material. Up to now, only the interlaboratory test in Germany can stand up to the closed system of the manufacturer, who supplies everything from one source. But is this really enough to guarantee independent quality control?<\/p>\n

The author describes the following case: The laboratory is informed by the submitter that he has the impression that the measured sodium values have been higher for one week. The laboratory then checks the quality control data for the performance evaluation of the analysis system.<\/p>\n

The tests did not reveal any irregularities. Now the laboratory can look at the patient sodium values of the last week and calculate a median value. In fact, higher values are found compared to the previous month. What had happened? \u2013 The laboratory received new batches of electrodes and calibrators and used them after prior calibration and quality control. There were no abnormalities. Due to the manufacturing process, the controls were adjusted to the new batches and could not detect any deviations in the patient sample.<\/p>\n

Quality control for new reagent batches is carried out at the manufacturer\u2019s premises. After sales release, the instrument system, the new reagent batch, the associated calibrator and the quality control material are matched to each other, i.e. a new target value is developed for the control material. This target value is thus dependent on the instrument system, new electrodes and the new reagent and calibrator batch. A change from reagent batch to reagent batch can therefore not be detected. Differences may occur.<\/p>\n

One solution to this problem would be to use independent control materials. Ideally in ready-to-use liquid form. In contrast to the Rili-B\u00c4K, the new IVDR regulation now also advises this, in addition to ISO 15189. Even the calculation of the patient mean values and interlaboratory test control samples are subject to errors and do not offer an optimal solution.<\/p>\n

Examples of deviations in patient results and associated false clinical conclusions due to a batch change are repeatedly found in the literature.<\/p>\n

To read the complete report, please follow this link<\/a>.<\/p>\n<\/div>

<\/div>
Blog overview<\/span><\/a><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":34415,"featured_media":13826,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1677,1634,1728,208,1632,1729],"tags":[1639,1641,1740,1678,1640,1731],"class_list":["post-13827","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-clinical-chemistry","category-independent-control-material","category-ivdr-en","category-latest-publications-en","category-quality-control","category-rili-baek-en","tag-clinical-chemistry","tag-independent-quality-control","tag-iso-ice-15189","tag-ivdr-en","tag-laboratory-diagnostics","tag-rili-baek-en"],"yoast_head":"\nNew IVDR requires independent quality controls<\/title>\n<meta name=\"description\" content=\"New IVDR requires independent quality controls of medical laboratories to improve the 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