Part No: P091Issued year: 2014File size: 0.38mbFile type: pdf
This report details a “load, wash, elute” weak cation exchange solid phase extraction procedure amenable to both plasma and urine samples. The extracts are subsequently injected into an LC-MS/MS system. The preliminary sample preparation method was developed at the Biotage US Applications lab (Charlotte, NC).The method was then transferred to Ionics (Bolton, ON, Canada) to facilitate the nmole/L measurements of the selected biomarkers
by laminar flow tandem mass spectrometry. The SPE-LC-ESIMS/ MS method parameters were first optimized using pooled mixed gender plasma. A set of patient samples (n=32) was later supplied by the Mayo Clinic (Rochester, MN) that had previously been analyzed by a validated referee method. The population represented measured values across a range of clinical relevance.
Part No: P137Issued year: 2015File size: 0.37mbFile type: pdf
This poster examines various factors in the development and optimisation of a SPE-LC-MS/MS method for extraction of catecholamines from plasma.
The final method utilizes EVOLUTE EXPRESS WCX plates in either standard SPE or fast Load-wash-elute modes, and incorporates a series of wash steps to optimise analytical sensitivity. Low elution volumes mean no evaporation step is required, and LLOQ is 20mg/mL or lower for each of the analytes.
Part No: P137v2Issued year: 2016File size: 0.39mbFile type: pdf
This poster investigates various parts of the SPE method development process to develop a highly sensitive LC-MS/MS method for analysis of catecholamines (epinephrine, norepinephrine, dopamine).
A number of steps are optimized to improve sensitivity of the
analytes. This includes reducing the buffer strength in the mobile
phase, reducing the buffer strength of washes, careful pH control
throughout the extraction, avoiding an evaporation step and
incorporating IPA in the reconstitution solvent.
Part No: PPS362Issued year: 2014File size: 1.23mbFile type: pdf
This product sheet compares automated sample preparation using the Biotage®Extrahera™ to an equivalent manual method utilizing a vacuum manifold. A selection of beta blocker drugs were extracted from pooled
stripped plasma using a supported liquid extraction procedure.
Part No: PPS366Issued year: 2014File size: 1.76mbFile type: pdf
Automated sample preparation using the Biotage®Extrahera™ was compared to an equivalent manual method utilizing a vacuum manifold. Analytes were extracted from pooled stripped plasma using a supported liquid extraction procedure.
Part No: PPS361Issued year: 2014File size: 1.28mbFile type: pdf
This document compares automated sample preparation using the Biotage®
Extrahera™ to an equivalent manual method utilizing a vacuum manifold. A selection of non-steroidal anti-inflammatory drugs (NSAIDS) were extracted from pooled stripped plasma using a supported liquid extraction procedure.
Part No: PN43Issued year: 2011File size: 0.27mbFile type: pdf
Endogenous phospholipids present in biological fluids are a major problem in LCMS/ MS analysis as they are often very difficult to remove during sample preparation. When phospholipids are not removed, they retain very strongly on reversed phase analytical columns. If high organic (end of run) washes are not incorporated into the LC methods these matrix components may elute in subsequent analyses causing regions of suppression/enhancement leading to inaccurate quantitation. This poster evaluates the use of polymer-based solid phase extraction (SPE) sorbents, incorporating hydrophobic and various mixedmode retention mechanisms to address the problems associated with phospholipid removal.
Phospholipid, EVOLUTE, STRATA X, OASIS, WATERS, AX, WAX, CX, WCX, ABN, ASMS 2011
Part No: P088Issued year: 2014File size: 1.06mbFile type: pdf
This poster evaluates the performance of a novel 96-well filter plate (ISOLUTE PLD+ Protein and Phospholipid Removal Plate) for
the simultaneous removal of proteins and phospholipids from serum samples prior to LC-MS/MS analysis.
Part No: P104Issued year: 2014File size: 0.77mbFile type: pdf
This poster presents the ISOLUTE PLD+ Protein and Phospholipid removal plate, highlighting its ease of use and excellent performance with respect to sample clean up, analyte recovery and elimination of back pressure build up in the UPLC system.
Part No: P026Issued year: 2008File size: 0.36mbFile type: pdf
Matrix components, particularly salts, proteins and
phospholipids, can lead to ion suppression resulting in
inaccurate quantitation and reduced detection limits.
Resin-based mixed-mode cation exchange SPE sorbents
are widely used for the extraction of basic compounds
from biological fluids. The dual retention mechanism
allows a two stage interference wash protocol, which
results in extremely clean extracts.
This poster will investigate the performance of
EVOLUTE™ CX for the extraction of a wide range of basic
drugs from plasma, showing high analyte recovery and
advanced extract cleanliness. The analyte suite was
selected to cover a variety of basic analytes with wide
ranging polarities (LogP values). Extract cleanliness
experiments were performed showing overall ion
suppression, then individual matrix components examined
in terms of protein and phospholipid removal.
Part No: AN830Issued year: 2014File size: 1.44mbFile type: pdf
This application note describes the use of the ISOLUTE® PLD+ Protein and Phospholipid Removal Plate for clean-up of a range of acidic, basic and neutral drugs from plasma. ISOLUTE® PLD+ Protein and Phospholipid Removal Plates are suitable for clean-up of a range of analytes with widely differing functionality and polarity characteristics from plasma, giving high recoveries, good reproducibility and excellent extract cleanliness.
Part No: AN702Issued year: 2011File size: 0.11mbFile type: pdf
This Application Note describes the extraction of a variety of basic drugs from plasma using EVOLUTE® CX mixed-mode resin-based SPE. The analyte suite includes basic drugs with wide ranging pKa and logP values.
Basic Drugs, Biotage, Ion Exchange, EVOLUTE, Pharmaceuticals
Part No: AN711Issued year: 2011File size: 0.11mbFile type: pdf
The following methods have been developed and optimized for the extraction of chloramphenicol from a variety of sample matrixes including milk, plasma, honey, urine, and shrimp/prawns for subsequent LC-MS/MS analysis. The methods are highly reproducible and offer low limits of detection.
AFFINILUTE, SupelMIP, MIP, Molecularly Imprinted Polymers,
Part No: AN602Issued year: 2011File size: 0.23mbFile type: pdf
This Application Note highlights the use of ISOLUTE® SLE+ supported-liquid extraction plates for the extraction of corticosteroids from human plasma, specifically Triamcinolone, Prednisolone, Hydrocortisone, Prednisone, Betamethasone, Cortisone, Dexamethasone, Flumethasone, Corticosterone, Beclomethasone, Triamcinolone, Fluocinolone, Budesonide 1, Budesonide 2 and 5-Pregnen-3β−ol-20-one.
Part No: AN844Issued year: 2015File size: 0.75mbFile type: pdf
This application note describes a mixed-mode weak cation exchange solid phase extraction protocol using EVOLUTE® EXPRESS WCX 96-well plates for the extraction of three catecholamines (epinephrine, norepinephrine and dopamine) from human plasma prior to LC-MS/MS detection, which allows low level quantification of the analytes.
Part No: AN713Issued year: 2011File size: 0.09mbFile type: pdf
The following methods have been developed for the selective extraction of the tobacco specific nitrosamine, NNAL (4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol) from aqueous sample matrices such as biological fluids (e.g., urine). The method is highly reproducible and offers NNAL recoveries in the range of 90% and a limit of detection below 5 ppt.
AFFINILUTE, MIP, Molecularly Imprinted Polymers, SupelMIP
Part No: AN743Issued year: 2011File size: 0.16mbFile type: pdf
This method demonstrates the extraction of Mephedrone (MCAT) from a range of biological fluids including plasma, urine and whole blood. This extraction is achieved through cation exchange using EVOLUTE CX, a mixed-mode resin-based SPE sorbent. Analytes were quantified using LC-MS/MS and recoveries were all above 90%.
SPE, ION EXCHANGE, EVOLUTE, CX, STRATA X, OASIS, DOA
Part No: AN787Issued year: 2013File size: 1.04mbFile type: pdf
This application note describes a Supported Liquid Extraction (SLE) protocol for the extraction of nicotine, cotinine, 3-OH-cotinine, nornicotine, norcotinine and anabasine from urine, serum, plasma and whole blood using ISOLUTE® SLE+ plates with LC-MS/MS detection.
nicotine cotinine nornicotine norcotinine 3-OH cotinine anabasine smoker
Part No: AN603Issued year: 2011File size: 0.17mbFile type: pdf
This Application Note highlights the use of supported-liquid Extraction to isolate three common NSAIDs, Sulindac, Flurbiprofen and Ibuprofen, from human plasma.
Biotage, Ostro, Liquid liquid extraction, supported liquid extraction, Extrelute