Provided herein are arrays, devices, systems, and methods for detection of compounds, such as odorant compounds. The arrays, devices, systems, and methods as described herein may provide patterns of electrical signals, wherein a given pattern may be associated with a given compound or a mixture of compounds such that a presence or a likelihood of a presence of the given compound or mixture of compounds can be determined. The cells expressing an odorant receptor can be present in an array of chambers, each chamber comprising a cell modified to express a unique odorant receptor profile and an electrical component configured to measure an electrical signal in the cell.

Methods and devices for sampling, processing and identifying use of a substance or substances of abuse are provided. Systems and kits for sampling, processing and identifying acute use of a substance of abuse is also provided.

A method for direct measurement of gradients of patient compliance with a medication regimen by employing a stable non-radioactive isotope taggant compound as part of, bound to, or applied to an endogenous molecule. An assay to determine patient compliance with medication regimens for HIV pre-exposure prophylaxis employing administering a taggant to a pharmacologically active compound, obtaining and collecting a patient tissue or fluid sample analyzing the collected tissue or fluid sample for the taggant concentration and interpreting data from the taggant concentration analysis as an indicator of gradients of patient compliance.

A method for direct measurement of gradients of patient compliance with a medication regimen by employing a stable non-radioactive isotope taggant compound as part of, bound to, or applied to an endogenous molecule. An assay to determine patient compliance with medication regimens for HIV pre-exposure prophylaxis employing administering a taggant to a pharmacologically active compound, obtaining and collecting a patient tissue or fluid sample analyzing the collected tissue or fluid sample for the taggant concentration and interpreting data from the taggant concentration analysis as an indicator of gradients of patient compliance.

The invention generally relates to methods of screening a sample for cannabinoids.

The present disclosure provides isolated antibodies that bind to acetaminophen-protein adducts that are useful in the detection and diagnosis of acetaminophen-induced toxicity.

A method for producing powderized cannabis oil, powderized cannabis oil, and edible products and beverages comprising the powderized cannabis oil. Powderized cannabis oil contains cannabis oil and maltodextrin in a ratio of at least three grams of maltodextrin for every one-eighth of a gram of cannabis oil. Edible products and beverages incorporating the powderized cannabis oil are human-consumable products that contain an emulsified, tasteless, and odorless dose of cannabis oil providing CBD, THC and/or THCA.

Provided herein are methods of identifying a protein capable of binding a ligand, the method comprising: (a) contacting the ligand with two or more samples comprising a plurality of proteins in a solution; (b) separating the proteins bound to the ligand (“bound proteins”) from the proteins that are not bound to the ligand (“unbound proteins”) in each sample; (c) denaturing and digesting the bound proteins to form a plurality of peptides in each sample; (d) quantifying a plurality of molecular features contained in the plurality of peptides in each sample, wherein the molecular features are defined as having a mass to charge ratio, retention time, and peak intensity as measured by mass spectrometry; and (e) ranking the molecular features that exhibit a statistically significant difference in quantity between the samples contacted with the ligand and a sample that is not contacted with the ligand (“statistically significant molecular feature”).

Provided herein are methods of identifying a protein capable of binding a ligand, the method comprising: (a) contacting the ligand with two or more samples comprising a plurality of proteins in a solution; (b) separating the proteins bound to the ligand (“bound proteins”) from the proteins that are not bound to the ligand (“unbound proteins”) in each sample; (c) denaturing and digesting the bound proteins to form a plurality of peptides in each sample; (d) quantifying a plurality of molecular features contained in the plurality of peptides in each sample, wherein the molecular features are defined as having a mass to charge ratio, retention time, and peak intensity as measured by mass spectrometry; and (e) ranking the molecular features that exhibit a statistically significant difference in quantity between the samples contacted with the ligand and a sample that is not contacted with the ligand (“statistically significant molecular feature”).

Methods for analysis of a glucuronide ligand-drug conjugate are provided.