Results 211 to 220 of about 93,515 (281)

Functionalized graphene oxide-based electrode material for the potentiometric detection of codeine phosphate in commercial cough syrups for forensic applications. [PDF]

Sci Rep
S E, Bhagavathsingh J, Abraham S, Nesasudha M, Janapala DK.   +4 more
europepmc   +1 more source

MultNAT HPV16/18 Assay: A Simple, Rapid, and Low‐Cost Polymerase Chain Reaction Method for the Detection of HPV16 and HPV18 Suitable for Point‐of‐Care Testing

Cancer Nexus, EarlyView.
ABSTRACT Aim Persistent high‐risk HPV infection can lead to the development of precancerous lesions, potentially progressing to invasive cancer. HPV status serves not only as a prognostic marker for squamous cell carcinoma (HNSCC) like oropharyngeal squamous cell carcinomas (OPSCC) but also significantly influences clinical management and treatment ...
Min Wang, Yueping Li, Qingting Bu, Peng Xiong, Suhang Li, Xiaoyan Li, Sisi Chen, Yanqiong Zhou, Siyu Li, Xiaojuan Jia   +9 more
wiley   +1 more source

Development of an ligase chain reaction-fluorescence-SERS multimodal biosensing workflow for ultrasensitive detection and single-base discrimination of KRAS ctDNA. [PDF]

Mikrochim Acta
Mostafa S, Kanarya D, Tantiwanichapan K, Botta R, Eiamchai P, Somboonsaksri P, Yıldırım Tirgil N.   +6 more
europepmc   +1 more source

Exploring Cerumen as an Alternative Matrix for Drug Detection and Quantification: Method Development and Application in Clinical Samples

Drug Testing and Analysis, EarlyView.
An LC–MS/MS method was developed for the detection of 33 psychoactive medications in cerumen (earwax) and applied to the samples of 60 psychiatric inpatient volunteers. The findings highlighted the utility of cerumen as an innovative biospecimen in clinical toxicological analysis.
Dimitrios Phaedon Kevrekidis, Helen G. Gika, Georgios Panagiotoglou, Eleni Parlapani, Pavlos Pavlidis, Nikolaos Raikos   +5 more
wiley   +1 more source

Electrochemical Sensors for Pesticide Residue Detection. [PDF]

Molecules
Sun J, Song X, Zhang Y.
europepmc   +1 more source

Investigations Into the Metabolism and Elimination of Flmodafinil and Fladrafinil for Sports Drug Testing Purposes

Drug Testing and Analysis, EarlyView.
This article investigates the metabolism and elimination of flmodafinil and fladrafinil, two fluorinated analogs of modafinil and adrafinil listed as S6 stimulants by the World Anti‐Doping Agency. After single‐dose administration to six volunteers, the compounds and their main metabolites were studied in urine and blood.
O. Krug, S. Guddat, C. Görgens, K. Walpurgis, F. Toma, A. Thomas, M. Thevis   +6 more
wiley   +1 more source

Rapid Determination of Several Biogenic Amines in Cold-Chain Fish Samples by Portable Ion Trap Mass Spectrometry with Nano-Electrospray Ionization. [PDF]

Foods
Wu J, Ma X, Wang Z, Wei Y, Liu Y, Men J, Ma W.   +6 more
europepmc   +1 more source

Investigations Into the Metabolism and Elimination of Tesofensine in Human Urine

Drug Testing and Analysis, EarlyView.
This study investigated tesofensine metabolism and urinary elimination after a single 483 μg intake via a dietary supplement. In six volunteers, urine was collected up to 659 h. LC‐HRMS/MS identified four tentative metabolites; maximum urinary concentrations reached 4 ng/mL within 4–48 h.
O. Krug, A. Thomas, M. Thevis
wiley   +1 more source

Detection of Testosterone Esters in Urine: Evidence of Trace‐Level Detectability in Doping Control Samples

Drug Testing and Analysis, EarlyView.
An ultrasensitive LC‐MS/MS method for detecting testosterone esters (T‐esters) in urine at sub–pg/mL levels is presented. This approach, employing Girard P derivatization, provides the first evidence of T‐esters' trace‐level detectability in human urine.
Daniel Pecher, Guro Forsdahl, Biljana Stojanovic, Günter Gmeiner   +3 more
wiley   +1 more source