Antonia Fe

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We present a false-positive result of ecstasy (3,4-methylenedioxy-NN-methylamphetamine) screening due to the therapeutic use of fenofibrate, an antihyperlipidemic drug. Our hypothesis was that the main metabolite of fenofibrate, fenofibric acid, was responsible for this cross-reactivity on a DRI(®) Ecstasy Assay, using a cut-off of 500 ng/mL. We estimated(More)
Anaerobic threshold (AT) determination by gas exchange measurements has to date been performed mostly by visual inspection from plots of ventilatory and gas exchange indexes. Owing to its subjective nature, this approach appears to be somehow arbitrary. Moreover, it still remains undetermined which of the commonly used gas exchange indexes is most reliable(More)
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