July 26, 2026
ADLM 2026
Visit ADLM from July 28 to 30. Discover over 200 product categories, more than 700 exhibitors, and the latest and best laboratory solutions. INSTAND will be there as an exhibitor.
We promote quality in medical laboratories by offering a wide range of external quality control and continuous education.
NEWS
Urine Drug Screening - Is it All 'Easy', or What are the Challenges?
April 11, 2026
An article by Prof. Dr. med. Werner Steimer, INSTAND EQAS/PT Expert Drug Screening and Pharmacology: INSTAND has long offered a range of well-established EQAS/PT for drug analysis, particularly in urine. Depending on the reported results, these interlaboratory tests are evaluated qualitatively and/or quantitatively. One might think that qualitative interlaboratory tests in particular are easy to evaluate and interpret, following the principle that positive is positive and negative is negative. However, this is a fallacy, or rather a dangerous oversimplification.
INSTAND AT A GLANCE
INSTAND promotes quality assurance in medical laboratories. As an interdisciplinary, non-profit, and scientific-medical professional society, our focus is on improving laboratory analyses' quality as the basis for optimal patient care. INSTAND is appointed by the German Medical Association as a reference institution and has been performing interlaboratory comparisons worldwide in all areas of in vitro diagnostics since 1970.