نتایج جستجو برای: passing bablok method
تعداد نتایج: 1655886 فیلتر نتایج به سال:
Amyloid β1-42 (Aβ1-42), total tau (t-tau), and phosphorylated tau (p-tau) are the main cerebrospinal fluid (CSF) biomarkers for early diagnosis of Alzheimer's disease (AD). Detection of AD is critically important in view of the growing number of potential new drugs that may influence the course of the disease in its early phases. However, cut-off levels for these CSF biomarkers have not yet bee...
OBJECTIVES This study was designed to evaluate the analytical performance of the novel Lumipulse G1200 BRAHMS procalcitonin (PCT) immunoassay. DESIGN AND METHODS This analytical evaluation encompassed the calculation of the limit of blank (LOB), limit of detection (LOD), functional sensitivity, intra- and inter-assay imprecision, confirmation of linearity and a comparison with the Vidas BRAHM...
The plasma aldosterone concentration:renin ratio (ARR) is widely used for the screening of primary aldosteronism, but its reproducibility is unknown. We, therefore, investigated the within-patient reproducibility of the ARR in a prospective multicenter study of consecutive hypertensive patients referred to specialized centers for hypertension in Italy. After the patients were carefully prepared...
Objective: This study aims to report on the process of standard settings (SS) and to compare the passing rates between the norm-reference and SS methods, for OSCE in psychiatry undergraduate examination at UKM for 2009/2010 session. Methods: In the SS method, examiners were asked to imagine the performance of a minimally competent student and gave marks using a standardized check-list. The mark...
BACKGROUND Point-of-care testing for C-reactive protein (CRP) may be helpful in differentiating viral from bacterial infection. Such a device should give results comparable to laboratory testing. The aim was to evaluate two point-of-care CRP tests (Nycocard and QuikRead) in febrile children in general practice, compared to a reference immunoturbidimetric assay. METHODS A cross-sectional study...
INTRODUCTION The aim of the present study was to validate prothrombin time (PT) international normalized ratio (INR) results obtained using Steelex test reagents and a Steelex coagulometer (Steelex Scientific Instrument Company, Beijing, China), in comparison with use of a well-established standard test employing Pacific Hemostasis reagents (Fisher Diagnostics, Middletown, VA, USA) and Teco Coa...
BACKGROUND Chromogranin A (CgA) is a biomarker for neuroendocrine tumors (NETs). The aims of this study were to evaluate differences in measurement between the ThermoFisher Brahms CgA Kryptor assay and the CisBio assay and to investigate the influence of patient covariates. Temperature stability of CgA using both assays was determined. DESIGN AND METHODS 406 patients were analyzed for serum C...
AIM To establish the ability of magnetic resonance (MR) and computer tomography (CT) to predict pathologic dimensions of pancreatic neuroendocrine tumors (PanNET) in a caseload of a tertiary referral center. METHODS Patients submitted to surgery for PanNET at the Surgical Unit of the Pancreas Institute with at least 1 preoperative imaging examination (MR or CT scan) from January 2005 to Decem...
STUDY OBJECTIVE The purpose of this study was to evaluate the reliability of noninvasive real-time measurement of carboxyhemoglobin (COHb) using a pulse CO-oximeter in victims of carbon monoxide poisoning (COP). METHODS During the 7-month study period, pulse CO-oximetry was measured on patients admitted to the emergency department (ED) for suspected COP. Each patient included in the study und...
BACKGROUND We evaluated the performance of multiplex tandem mass spectrometry (MS/MS) in newborn screening for detection of 6 lysosomal storage disorders (LSDs), namely, Niemann-Pick A/B, Krabbe, Gaucher, Fabry, and Pompe diseases and Hurler syndrome. METHODS We revised the conditions and procedures of multiplex enzyme assay for the MS/MS analysis and determined the precision of our enzyme as...
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