Part No: AN933Issued year: 2020File size: 2.25mbFile type: pdf
This application note describes the extraction of a panel of estrogenic hormones from human serum using EVOLUTE® EXPRESS ABN solid phase extraction plates prior to LC/MS analysis. The simple sample preparation procedure delivers clean extracts and analyte recoveries greater than 90% with RSDs lower than 5% for all analytes. Linearity of greater than 0.99 is achieved for Estrone (E1) and Estradiol (E2) from 5–2000 pg/mL, and 50–20000 pg/mL for Estriol (E3). No derivatization is required, and detection limits are enhanced using a fluorinated mobile phase.
Part No: AN939Issued year: 2020File size: 1.32mbFile type: pdf
This application note describes the extraction of steroid hormones from human serum using Biotage® Mikro ABN microelution plates prior to LC/MS-MS analysis. The simple sample preparation procedure delivers clean extracts and analyte recoveries mostly greater than 70% with RSDs lower than 5% for most analytes. Linearity of greater than 0.99 is achieved for all analytes from 1–1000 pg/mL. An elution volume of 30 μL is used, which is simply diluted prior to analysis, avoiding a time consuming evaporation step.
Part No: AN940Issued year: 2020File size: 1.28mbFile type: pdf
This application note describes the extraction of steroid hormones from human serum using Biotage® Mikro ABN microelution plates prior to LC/MS-MS analysis. The simple sample preparation procedure delivers clean extracts and analyte recoveries mostly greater than 90% with RSDs lower than 5% for most analytes. Linearity of greater than 0.99 is achieved for all analytes from 1–1000 pg/mL.
Note: if DHEAS is required, see application note AN939
Part No: AN891.V.3Issued year: 2019File size: 4.41mbFile type: pdf
This application note describes the extraction of a panel of 19 steroid hormones from human serum using EVOLUTE® EXPRESS ABN solid phase extraction plates prior to LC/MS analysis. The simple sample preparation procedure delivers clean extracts and analyte recoveries greater than 80% with RSDs lower than 10% for the majority of analytes. Linearity of >0.99 is achieved for all analytes in the range 5–5000 pg/mL.
The application note includes details on automation of the extraction method using Biotage® Extrahera.
Part No: AN922Issued year: 2019File size: 3.46mbFile type: pdf
This application note describes the extraction of a panel of 19 steroid hormones from human urine using EVOLUTE® EXPRESS ABN solid phase extraction plates prior to LC-MS/MS analysis. The simple sample preparation procedure delivers clean extracts and analyte recoveries greater than 75% with RSDs lower than 5% for most analytes. Linearity of greater than 0.999 is achieved for all analytes in the range 1–1000 pg/mL.
Manual and automated (using Biotage Extrahera) extraction protocols are detailed.
Part No: AN923Issued year: 2019File size: 3.7mbFile type: pdf
This application note describes the extraction of a panel of 19 steroid hormones from human urine using ISOLUTE® SLE+ Supported Liquid Extraction plates prior to LC/MS-MS analysis. The simple sample preparation procedure delivers clean extracts and analyte recoveries greater than 90% with RSDs lower than 10% for all analytes. Linearity of greater than 0.999 is achieved for all analytes in the range 1-1000 pg/mL.
Manual and automated (using Biotage Extrahera) extraction protocols are detailed.
Part No: AN890.V.1Issued year: 2018File size: 1.73mbFile type: pdf
This application note describes the extraction of a panel of steroid hormones from human serum using ISOLUTE® SLE+ Supported Liquid Extraction plates prior to LC/MS-MS analysis. The simple sample preparation procedure delivers clean extracts and high, reproducible recoveries (>75%, RSD <10% ) for all analytes in human serum, with linearity >0.99 in the range 5–5000 pg/mL.
Part No: AN894Issued year: 2018File size: 1.17mbFile type: pdf
This application note describes the simultaneous extraction of aldosterone at low (< 25pg/mL) concentration and angiotensin I and II from plasma, with the potential to improve throughput and reduce time and costs in PRA determination.
Part No: PPS451Issued year: 2017File size: 2.99mbFile type: pdf
Whether you need targeted methods for analytes such as Vitamin D metabolites in serum, or methods suitable for extraction of a wide panel of drugs and metabolites from urine, sample preparation before analysis is essential.
This compendium highlights a selection of clinical sample preparation applications from Biotage.
Part No: AN860.V.1Issued year: 2016File size: 0.89mbFile type: pdf
This application note describes a simple supported liquid extraction method for extraction of estrone and estradiol from human serum. An analytical HPLC-MS/MS method that avoids the use of derivatization or fluoride adduct stabilization (two approaches often used to enhance method sensitivity) is used.
High, reproducible analyte recovery and low detection limits (0.001 ng/mL) are achieved.
Part No: AN777Issued year: 2013File size: 0.86mbFile type: pdf
Cortisol is a steroid hormone that in urine can be used to diagnose hyper or hypo cortisol diseases such as Cushing’s Syndrome. This methodology has been designed to give an effective and efficient supported liquid extraction protocol for the clean-up and concentration of urinary cortisol levels. Analyte recoveries achieved using this method ranged from 99-101% with RSDs below 5% for all analytes.
Cortisol, Steroid hormone, Cushing's Syndrome, Cushing's Disease, Clinical, SLE, Supported Liquid Extraction, Stress,
Part No: AN778Issued year: 2013File size: 0.88mbFile type: pdf
This methodology has been designed to give an effective and efficient supported liquid extraction protocol for the clean-up and concentration of salivary cortisol levels. Cortisol is a steroid hormone that when measured from saliva can be used as an indication of stress. Analyte recoveries achieved using this method ranged from 96-99% with RSDs below 3% (n=7) for all analytes.
Cortisol, Saliva, SLE, Supported Liquid Extraction, ISOLUTE, Clinical, Steroid Hormones, Stress
Part No: AN762Issued year: 2012File size: 0.08mbFile type: pdf
This application note describes the extraction of testosterone and androstenedione from female patient serum samples using ISOLUTE® SLE+ (96 well) plates. This method has been optimized to extract testosterone and androstenedione from female clinical serum samples. The method has achieved very low limits of quantitation for testosterone and androstenedione 0.4nmol/L and 0.9nmol/L respectively. The recoveries for both analytes were greater than 90%.
Testosterone, Androstenedione, Clinical, Serum, ISOLUTE, SLE+, steroids,
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: AN740Issued year: 2011File size: 0.38mbFile type: pdf
This application note describes the extraction of testosterone and other steroid hormones from human plasma using ISOLUTE SLE+ supported liquid extraction plates (96-well) with LC-MS/MS analysis. This method describes the use of ISOLUTE SLE+ supported liquid extraction plates (96-well) to extract a range of steroid hormones including testosterone and progesterone from human plasma. This simplified and efficient extraction method has significant analyte recoveries ranging from 90-107% withb LOQs as low as 500 pg/mL.
ISOLUTE, TESTOSTERONE, SLE, SLE+, SUPPORTED LIQUID EXTRACTION, STEROID, HORMONE, PLASMA, ANDROGEN, CLINICAL