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Thermo Fisher Scientific Launches Complementary Diagnostic Immunoassay Measuring Plazomicin Concentrations

Thermo Fisher Scientific has received FDA clearance for its de novo submission of the QMS Plazomicin Immunoassay

by Thermo Fisher Scientific
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Thermo Fisher Scientific has received FDA clearance for its de novo submission of the Thermo Scientific QMS Plazomicin Immunoassay, the first of its kind for complementary diagnostic immunoassays. This quantitative immunoassay measures the concentration of a novel therapeutic antibiotic, plazomicin, using the automated clinical chemistry analyzer, Beckman Coulter AU 680. Plazomicin (trade name ZEMDRI1) is a next-generation aminoglycoside being used to treat patients with complicated urinary tract infections (cUTI).

The new QMS Plazomicin Immunoassay is the latest addition to the Thermo Fisher line of therapeutic drug monitoring (TDM) immunoassays, which employ proprietary technology across a range of drug classes including those for antibiotics, antiepileptics, antiarrhythmics, immunosuppressants, and others. Thermo Scientific TDM immunoassays enable physicians to monitor and administer therapeutics on an individual patient basis. By maintaining optimized drug levels, the effects of under or over dosage may be minimized and patient outcome improved.

This immunoassay was developed in collaboration with Achaogen, Inc., a biopharmaceutical company with expertise in innovative antibacterial drug development to address multi-drug resistant (MDR) gram-negative infection. “The commercialization of our FDA cleared QMS Plazomicin immunoassay is representative of our continued commitment to meet the needs of our biopharmaceutical development partners and the patients whom they serve,” said Lonnie Shoff, president, clinical diagnostics at Thermo Fisher. “QMS TDM immunoassays are liquid, ready-to-use and designed to provide precise and accurate measurement of drug levels in patients.”

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“Therapeutic drug monitoring aims to improve patient outcomes and reduce costs. The measurement of levels of plazomicin in blood will enable TDM-adjusted plazomicin dosing in recommended patient populations,” said Janet Dorling, chief commercial officer at Achaogen. “Monitoring plazomicin drug levels with accuracy and precision has been an important goal and, with the achievement of this regulatory milestone, we are excited about the commercialization of the QMS Plazomicin Immunoassay from Thermo Fisher.”


About Thermo Fisher Scientific

Thermo Fisher Scientific Inc. is the world leader in serving science, with revenues of more than $20 billion and approximately 70,000 employees globally. Our mission is to enable our customers to make the world healthier, cleaner and safer. We help our customers accelerate life sciences research, solve complex analytical challenges, improve patient diagnostics, deliver medicines to market and increase laboratory productivity. Through our premier brands – Thermo Scientific, Applied Biosystems, Invitrogen, Fisher Scientific and Unity Lab Services – we offer an unmatched combination of innovative technologies, purchasing convenience and comprehensive services.  For more information, please visit