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BACKGROUND The ability to perform quantitative hCG testing in whole blood at the point-of-care is desirable. The purpose of this study was to perform an analytical validation of the Abbott i-STAT Total β-hCG test. METHODS Whole blood, plasma, and serum samples were prepared by the addition of hCG and were used to evaluate precision, linearity, analytical… (More)
During epithelial infections, pathogenic bacteria employ an array of strategies to attenuate and evade host immune responses, including the influx of polymorphonuclear leukocytes (PMN; neutrophils). Among the most common bacterial infections in humans are those of the urinary tract, caused chiefly by uropathogenic Escherichia coli (UPEC). During the… (More)
OBJECTIVE Elevated concentrations of hCG beta core fragment (hCGβcf) are known to cause false-negative results in qualitative urine pregnancy test devices, but the pattern of urinary hCGβcf during normal pregnancy has not been well characterized. Here, we evaluate the relationship between urine hCG, hCGβcf, and hCG free β subunit (hCGβ) during pregnancy. … (More)
Few antibiotic options exist for the management of infections due to vancomycin-resistant enterococci (VRE). We describe a case involving the safe and successful use of tedizolid, a new oxazolidinone, to treat VRE prosthetic joint infection.
BACKGROUND Sexually transmitted infections (STIs) are spread primarily through sexual contact and are a major cause of morbidity and mortality worldwide. Once identified, some STIs can be cured following appropriate therapy; for others, suppressive regimens and approaches to prevent ongoing transmission are important. The incidence of many common STIs is… (More)
OBJECTIVE Elevated urine concentrations of hCG beta core fragment (hCGβcf) are known to cause false negative qualitative point-of-care hCG test results, but limited information is available regarding urine hCGβcf. In this study, we evaluate the relationship between serum and urine hCG concentrations and the frequency of elevated urine hCGβcf concentrations.… (More)
BACKGROUND Carbapenemase-producing gram-negative bacteria (CP-GNB) are an urgent and expanding public health threat. Rapid and accurate identification of these organisms facilitates infection prevention efforts in healthcare facilities. The objective of our study was to evaluate methods to detect and identify CP-GNB. METHODS We examined 189… (More)
Respiratory distress syndrome is a major cause of neonatal morbidity and mortality that is most commonly caused by a deficiency in lung surfactant in premature infants. Therefore, laboratory tests were developed to measure the presence and/or concentration of lung surfactant in amniotic fluid in order to estimate maturity of the fetal lung. Although these… (More)
The Brief Case: A reactive HIV rapid antibody test in a pregnant woman.