نتایج جستجو برای: preanalytical error
تعداد نتایج: 254705 فیلتر نتایج به سال:
BACKGROUND An observational study was conducted in 12 European countries by the European Federation of Clinical Chemistry and Laboratory Medicine Working Group for the Preanalytical Phase (EFLM WG-PRE) to assess the level of compliance with the CLSI H3-A6 guidelines. METHODS A structured checklist including 29 items was created to assess the compliance of European phlebotomy procedures with t...
INTRODUCTION Preanalytical errors, along the process from the beginning of test requests to the admissions of the specimens to the laboratory, cause the rejection of samples. The aim of this study was to better explain the reasons of rejected samples, regarding to their rates in certain test groups in our laboratory. MATERIALS AND METHODS This preliminary study was designed on the rejected sa...
The standardization of clinical studies using extracellular vesicles (EVs) has mainly focused on the procedures employed for their isolation and characterization; however, preanalytical aspects sample collection, handling storage also significantly impact reproducibility results. We conducted an online survey based SPREC (Standard PREanalytical Code) among members GEIVEX (Grupo Español de Inves...
Abstract Objectives The research was conducted as a descriptive study to evaluate the practices and knowledge levels of midwives nurses in preanalytical phase newborn screening tests. Methods sample consisted 233 working 90 primary healthcare centers three major districts Istanbul. participants blood sampling were evaluated with Preanalytical Phase Evaluation Form [PPEF]. Results It determined ...
BACKGROUND The quality of oral anticoagulant therapy management with coumarin derivatives requires reliable results for the prothrombin time/International Normalized Ratio (PT/INR). We assessed the effect on PT/INR of preanalytical variables, including ones related to off-site blood collection and transportation to a laboratory. METHODS Four laboratories with different combinations of blood c...
There was no difference in mean decay time in samples of controls and patients. We found a significant change in ACTH plasma concentrations with time, as in other studies (1, 5), but this change was much smaller than expected. Unlike another investigation (5 ), we studied samples not only from healthy volunteers but also from patients with high ACTH concentrations. Our study did not show a diff...
Peptide-based mass spectrometry approaches, such as multiple reaction monitoring, provide a powerful means to measure candidate protein biomarkers in plasma. A potential confounding problem is the effect of preanalytical variables, which may affect the integrity of proteins and peptides. Although some blood proteins undergo rapid physiological proteolysis ex vivo, the stability of most plasma p...
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