Search: Urine

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Automating the extraction and analysis of Urinary Free Cortisol using Instrument Top Sample Prep (ITSP), GERSTEL Multi Purpose Sampler and Agilent LC-MS/MS

The measurement of urinary free cortisol (UFC) is used in the investigation of possible Cushing's syndrome. Cortisol is a steroid-hormone synthesized from cholesterol by a multienzyme cascade in the adrenal g ...

Resource - Susan Gilbert - 15th Apr 2011 - 0 comments

Quantification of Volatiles in Mammalian Urine by Stir Bar Sorptive Extraction (SBSE) Techniques and Gas Chromatography

Stir Bar Sorptive Extraction (SBSE) has been found as a successful extraction method for profiling volatile and semivolatile putative chemosignaling compounds in hamster and mouse urine. When combined with an ...

Resource - Susan Gilbert - 13th Apr 2011 - 0 comments

Analysis of Trace Components in Urine Utilizing Twister SBSE & TDS2/TDSA Thermal Desorption

Customer is interested in Twister SBSE & TDS2/TDSA thermal desorption for the analysis of trace components in urine. Samples were prepared by the customer as follows: 2mls of urine was adjusted to pH 2.1 ...

Resource - Susan Gilbert - 26th Jan 2011 - 0 comments

The Use of a Multipurpose Sampler for Headspace GC-MS Analysis of Volatile Organic Compounds in Human Urine and Plasma

A multi-purpose-sampler (Gerstel MPS), designed for liquid large volume, gaseous and headspace samples was used for the GC-MS analysis of organic volatiles in human urine and plasma. Headspace sampling with a ...

Resource - Susan Gilbert - 20th Dec 2010 - 0 comments

Quantification of 4-Heptanone in Urine by Headspace GC-MS Analysis Using a Multipurpose Sampler

A multi-purpose-sampler (Gerstel MPS), designed for liquid large volume, gaseous and headspace samples was tested for its suitability in the GC-MS analysis of organic volatiles in human urine. Headspace sampl ...

Resource - Susan Gilbert - 20th Dec 2010 - 0 comments

The Use of a Multi Purpose Sampler for Headspace GC-MS Analysis of Volatile Organic Compounds in Human Urine

A multi purpose sampler (Gerstel MPS), designed for liquid large volume, gaseous and headspace samples was tested for its suitability in the GC-MS analysis of organic volatiles in human urine. Headspace samp ...

Resource - Susan Gilbert - 20th Dec 2010 - 0 comments

Analysis of Drugs of Abuse using Automated Disposable Pipette Extraction and LC/MS/MS

Solid Phase Extraction (SPE) is a widely used, proven method for sample preparation and sample clean-up in the field of forensic analysis. Most SPE products require relatively large volumes of solvent leadin ...

Resource - Susan Gilbert - 9th Sep 2010 - 0 comments