Comparison of Performance between the Elecsys 4 and 5 Generation STAT Cardiac Troponin T Immunoassays.

Objective: To evaluate the analytical and clinical performance of the 5 GEN cTnT assay by comparing it with the 4 GEN assay.

Methods: Imprecision, analytical measurement range (AMR), reference interval, and quantitative comparison were studied. Qualitative comparisons of the two assays for randomly selected patients with the cTnT test orders and patients with elevated N-terminal proB-type natriuretic peptide (NT-proBNP), decreased estimated glomerular filtration rate (eGFR), and increased procalcitonin were performed.

Automated Measurement of Plasma Cell-Free Hemoglobin Using the Hemolysis Index Check Function.

Background: The Roche Cobas chemistry analyzer's hemolysis index (HI) check function can directly report hemoglobin (Hb) concentrations. We aimed to validate the HI check function for the measurement of plasma cell-free Hb.

Methods: Plasma samples (6 μl) were taken by the analyzer and diluted in normal saline to measure the absorbance for Hb at 570 and 600 nm.

Removal of PCBs from a Contaminated Soil Using CF-Systems® Solvent Extraction Process.

The U.S. Environmental Protection Agency's (EPA) Superfund Technical Assistance Response Team (START) in cooperation with EPA's Superfund Innovative Technology Evaluation (SITE) program evaluated a pilot scale solvent extraction process developed by CF-Systems.