{"id":10613,"date":"2025-10-23T22:34:21","date_gmt":"2025-10-23T19:34:21","guid":{"rendered":"https:\/\/medilab.km.ua\/?p=10613"},"modified":"2026-04-20T18:53:34","modified_gmt":"2026-04-20T15:53:34","slug":"laboratory-testing-as-a-basis-for-modern-medicine-from-methodology-to-clinical-significance","status":"publish","type":"post","link":"https:\/\/medilab.km.ua\/en\/laboratory-testing-as-a-basis-for-modern-medicine-from-methodology-to-clinical-significance\/","title":{"rendered":"Laboratory testing as the basis of modern medicine: from methodology to clinical significance"},"content":{"rendered":"
\n \n
\n \n
\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n <\/div>\n \n
\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n
\n \n\n
<\/div>\n <\/div>\n <\/div>\n<\/div>\n \n\n
\n 5\/5 - (281 votes) <\/div>\n <\/div>\n

Fundamental aspects of laboratory testing: accuracy, validity, and clinical interpretation<\/h2>\n

Laboratory testing is a cornerstone of modern diagnostics, as it provides doctors with objective quantitative data about a patient's health. It is estimated that over 70% Clinical Solutions<\/b> are based on the results of laboratory tests. The quality of further treatment and prognosis of diseases depends on the correct choice of method, the accuracy of the test, and the correct interpretation of the result. This material is devoted to an in-depth analysis of the key parameters that ensure the reliability of laboratory data.<\/p>\n

Testing Quality: Preanalytical, Analytical and Postanalytical Stages<\/h2>\n

The reliability of any laboratory result depends on strict control at three main stages:<\/p>\n

1. Pre-analytical stage: Basis of reliability<\/h4>\n

This is the least controlled stage by the laboratory, but it is critically important. It includes patient preparation, collection of biological material (blood, urine, cerebrospinal fluid, etc.), labeling, storage, and transportation to the laboratory. For example, improper preparation (eating before the glucose tolerance test) or improper storage of the sample (excessive heating) can lead to falsely overestimated or underestimated results<\/b>.<\/p>\n

2. Analytical stage: Method accuracy<\/h4>\n

At this stage, the sample is directly analyzed. Standardized methods such as enzyme-linked immunosorbent assay (ELISA) are used.ELISA<\/a>), polymerase chain reaction (PCR), mass spectrometry, and flow cytometry. Internal and external quality control<\/b> are mandatory to ensure accuracy (closeness of the measured value to the true value) and precision (repeatability of results) of the equipment.<\/p>\n

3. Post-analytical stage: Interpretation and validation<\/h4>\n

This stage includes checking the results, validating them by the laboratory technician, and transmitting them to the clinician. Even a technically correct result can be clinically erroneous if it is not correlated with the patient's age, gender, medical history, and medication intake.<\/p>\n

\"ROC<\/h2>\n

Validity and standardization of methods in clinical biochemistry<\/h2>\n

To ensure global comparability and reliability, laboratory tests are guided by international standards.<\/p>\n