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A Rapid and Analytically Sensitive LC-MS Method for the Simultaneous Analysis of a Panel of Steroid Hormones for Clinical Research

21 Sept 2014

In this study, a rapid clinical research method for the LC-MS/MS measurement of T, DHEAS, A4 and 17OHP has been developed. The method is suitable for research use and the small volume of serum used (50 μL) is desirable for clinical research laboratories that are sample limited.

ACQUITY UPLC System

Waters

Waters ACQUITY UPLC - Dramatic Improvements in Speed, Sensitivity and Resolution Whether you work in methods development or quality assurance, in drug discovery and development or testing for safety in food supplies, you seek a productivity edge. With the ACQUITY UPLC® System, now you can get more information in a single, short run than you've ever seen with HPLC. Waters ACQUITY UPLC System UltraPerformance LC® (UPLC®) technology starts with unique 1.7 μm small-particle chemistries. Chromatographers no longer need to choose between speed and resolution–with UPLC you get both. Instrument Designed for Chemistry; Chemistry Designed for the Instrument The ACQUITY UPLC System has been holistically designed to match the performance needs of our innovative column chemistries with robust hardware, easy-to-use software and specialized support services. Small, pressure-tolerant particles High-pressure fluidic modules Minimized system volume Negligible carryover Reduced cycle times Fast response detectors Integrated system software and diagnostics With UPLC you have the ability to work more efficiently with higher speed, sensitivity and resolution at a much wider range of linear velocities, flow rates and backpressures to obtain superior results. The Waters ACQUITY UPLC System's high-pressure fluidics optimizes flow rates to make the most of small particle technology. The ACQUITY UPLC System's sample-handling design is designed to ensure exceptionally low carryover and reduced cycle time. And when interfaced with the Sample Organizer, it increases unattended sample capacity by ten times. High-speed detectors, both optical and mass, contribute to increased sensitivity and help manage the heightened speed and resolution requirements of UPLC. ACQUITY UPLC Systems are easily controlled, diagnosed, and monitored via a graphical system console interface. The console offers: Quick and easy access to critical instrument parameters Simple system start-up, elegant system status monitoring and predictive performance indicators to ensure maximum productivity Data management capabilities that are supported by both MassLynx™ and Empower™ software The ACQUITY UPLC System is also supported by Intelligent Device Management technology with our Connections® INSIGHT™ service, providing instrument diagnostics.

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Xevo TQ-S

Waters

Xevo TQ-S tandem quadrupole mass spectrometer - designed for the most demanding quantitative UPLC/MS/MS applications. The ultimate in tandem quadrupole performance allows you to achieve unrivalled sensitivity and robustness, available to everyone due to the accessibility of the Xevo platform. The Xevo TQ-S gives you class leading sensitivity and robustness, qualitative information when you need it most and accelerated method development for sensitive and robust methods. Reducing complexity, increasing ease of use, and ensuring the correct result every time.

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Solid-Phase ExtractionSolid-phase extraction (SPE) is used for clean-up, extraction and concentration of semi-volatile or non-volatile analytes from complex mixtures including blood, urine and food samples. Multiple formats are available for conducting SPE, including prepacked SPE cartridges, disks and microplates, as well as SPE sorbent powders for manual packing. SPE systems can be used to automate the process and extract multiple samples at once. Solid-phase microextraction (SPME) and supported liquid extraction (SLE) products are also available in the same formats. Find the best SPE, SLE and SPME equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Clinical ChemistryBiochemistry (or clinical chemistry) involves the analysis of bodily fluids using chemical tests. Techniques used include HPLC, chromatography, spectroscopy, mass spectrometry, immunochemical, electrophoresis, turbidometric / spectrophotometric assay, MRI and ISE analysis. Tests are often carried out on plasma or serum but urine (urinalysis) and fecal specimens are also processed.HormonesSolid Phase Extraction (SPE)Solid phase extraction (SPE) is a sample preparation technique used to separate and concentrate analytes from complex mixtures. It is widely used in environmental, pharmaceutical, and clinical analysis. SPE provides higher sensitivity and selectivity compared to traditional liquid-liquid extraction methods, making it essential for accurate and reproducible results. Explore SPE tools and systems in our peer-reviewed product directory; compare products, check reviews, and get pricing directly from manufacturers.Steroids