Methods, kits and systems described herein provide collecting, preparing, processing and/or analyzing a clinical sample, such as a blood. The methods, kits and systems may use a biocompatible solution comprising water and a stabilizing solvent, such as isopropanol, for accurate testing of the presence and/or amount of dmg, nutrient, or metabolite.

This disclosure relates to methods and kits for determining the presence and/or amount of one or more analytes in a keratinized structure (e.g., hair) sample.

The present invention provides a rapid method for forensic drug testing in a post-mortem individual using muscle tissue and fluid associated with the muscle tissue obtained from remains of the post-mortem individual. The method comprises obtaining muscle tissue and associated fluid from a post-mortem individual, collecting the fluid associated with the muscle tissue, analyzing the fluid associated with the muscle tissue to detect and quantify one or more non-naturally occurring drugs in the post-mortem individual, and identifying the one or more non-naturally occurring drugs in the post-mortem individual. The detection and quantification of non-naturally occurring drugs in muscle tissue and associated fluid is surprisingly faster than detection and quantification of the non-naturally occurring drugs in muscle tissue obtained from the same post-mortem individual and prepared as muscle tissue homogenates using the LC-MS/MS method, with results obtained in as soon as three hours.

The subject invention provides methods, assays, and products for visual detection of small-molecule targets in a sample in both clinical and field settings within minutes. The subject invention is based on an aptamer sensor that reports the presence of small-molecule target via a sensitive colorimetric signal for naked-eye detection. The aptamer sensor is a CBSAzyme-based sensor having both target-mediated cooperative behavior of the CBSA and peroxidase-mimicking catalytic activity of DNAzyme. The subject invention also provides methods of using the CBSAzyme-based sensor.

The present invention relates functional ligands to target molecules, particularly to functional nucleic acids and modifications thereof, and to methods for simultaneously generating, for example, numerous different functional biomolecules, particularly to methods for generating numerous different functional nucleic acids against multiple target molecules simultaneously. The present invention further relates to functional ligands which bind with affinity to target molecules, such as opioids and opioid metabolites.

A method for quantitatively determining the amount of acetaminophen in a sample with greater precision, greater sensitivity and fewer interactions and fewer spectral and chemical interferences with other compounds contained in the sample. The method includes acetaminophen being hydrolyzed and the resulting p-minophenol being reacted with a compound of general formula (III)

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in the presence of an oxidant, wherein R1 and R2, independently of one another, are selected from H, CH.sub.3, and OCH.sub.3, R3 is C.sub.2H.sub.5 and R4 is a C.sub.1-4 alkyl moiety with a terminal sulfonate group, with the proviso that at least one of R1 and R2 is OCH.sub.3 and/or R4 additionally has at least one OH substituent, and then the amount of the compound of general formula (IV) in the reaction mixture being photometrically determined.

The subject invention provides methods, assays, and products for visual detection of small-molecule targets in a sample in both clinical and field settings within minutes. The subject invention is based on an aptamer sensor that reports the presence of small-molecule target via a sensitive colorimetric signal for naked-eye detection. The aptamer sensor is a CBSAzyme-based sensor having both target-mediated cooperative behavior of the CBSA and peroxidase-mimicking catalytic activity of DNAzyme. The subject invention also provides methods of using the CBSAzyme-based sensor.

Antibodies, immunoassay methods and kits for the detection and determination of 3,4,-dichloro-N-[2-(dimethylamino)cyclohexyl]-N-methylbenzamide and 3,4,-dichloro-N-[2-(methylamino)cyclohexyl]-N-methylbenzamide, as well as the precursory immunogens, are described.

The present invention provides methods for fabricating field-effect devices and sensor arrays. The field of the invention also pertains to methods of using the sensors individually, in combination, and in array fashion to detect molecules. The present invention also provides for products produced by the methods of the present invention and for apparatuses used to perform the methods of the present invention.

The invention proposes the use of at least one strain of Lactobacillus acidophilus to prepare a support administered to humans or animals with an analgesic purpose in the gastrointestinal system.