Water used for the preparation of EIA reagents and buffers.

L(+)-Lactate is the major stereoisomer of lactate formed in human intermediary metabolism. The lactate to pyruvate ratio reflects the redox state of the cell and describes the balance between NAD+ and NADH, which is dependent on the interconversion of lactate and pyruvate via lactate dehydrogenase…

The EpiTitan™ Histone Peptide Array platform is designed for rapid and high-throughput screening of effector protein, antibody, and enzyme interactions with a comprehensive library of combinatorially-modified and biotinylated histone peptides immobilized on a streptavidin-coated glass slide.…

Cayman's Cortisol Express ELISA is a competitive assay that permits the rapid measurement of cortisol from biological samples, requiring only a two hour incubation and one hour development times.

Cayman’s Albumin (human) ELISA Kit is a competitive assay that can be used for quantification of albumin in urine. The assay has a range from 15.6-2,000 ng/ml and a sensitivity (80% B/B0) of approximately 60 ng/ml.

This nuclear receptor assay system utilizes proprietary non-human mammalian cells engineered to provide constitutive, high-level expression of human constitutive androstane receptor, isoform 3 (NR1I3), a ligand-dependent transcription factor commonly referred to as CAR3. These reporter cells…

Both DNA and RNA are damaged by oxidation during aging and in a variety of disease states including cancer. The repair processes that are initiated to correct this damage release multiple oxidized guanine species into the urine. Cayman Chemical has developed this immunoassay for the measurement of…

Cayman’s Adipogenesis Assay provides the reagents required for studying the induction and inhibition of adipogenesis in the established 3T3-L1 model, using the adipogenesis induction procedure. This kit can also be used to screen drug candidates involved in adipogenesis. The classic Oil Red O…

Cayman’s Histamine EIA is a derivitization-amplified competitive enzyme immunoassay which detects histamine within the range from 40 to 5,500 pg/ml. The assay can be used for the analysis of histamine in blood (plasma or serum) without extraction or purification. The use of other sample types…

Cayman’s Antioxidant Assay measures the total antioxidant capacity of plasma, serum, urine, saliva, or cell lysates. The assay relies on the ability of antioxidants in the sample to inhibit the oxidation of ABTS (2,2'-azino-di-[3-ethylbenzthiazoline sulphonate]) to ABTS•+ by…

ALT is a homodimeric cytoplasmic pyridoxal phosphate-dependent enzyme involved in cellular nitrogen metabolism, amino acid metabolism, and liver gluconeogenesis. Cayman’s Alanine Transaminase Assay provides a convenient method of detecting ALT activity in serum, plasma, tissue samples, and…

Corticosterone is a glucocorticoid produced by the adrenal cortex in response to ACTH (adrenocorticotropic hormone), and is the precursor to aldosterone. The production of glucorcorticoids is increased by stress; therefore, corticosterone can be used as a biomarker of stress. Plasma corticosterone…

Catalase is an ubiquitous antioxidant enzyme that is present in most aerobic cells. It is involved in the detoxification of H2O2, a ROS that is a toxic product of both normal aerobic metabolism and pathogenic ROS production. Cayman’s Catalase Assay utilizes the peroxidatic function of…

Cayman’s Protein Synthesis Assay Kit is a non-radioactive method for measuring protein synthesis that employs the cell-permeable, alkyne-containing, puromycin analog O-Propargyl-puromycin (OPP). Upon application to cells, the OPP probe incorporates into the C-terminus of translating…

Cayman’s Autophagy/Cytotoxicity Dual Staining provides a convenient tool for studying the regulation of autophagy and cytotoxicity at the cellular level. The kit employs MDC, an autofluorescent substance incorporated into multilamellar bodies by both an ion trapping mechanism and the…

Cayman's Multi-Drug Resistance Assay Kit provides a convenient tool for studying the modulation of cellular multi-drug resistance (MDR) machinery. The kit employs calcein AM, a cell-permeable nonfluorescent dye, which is cleaved intracellularly to yield the impermeant fluorescent molecule,…

Cayman’s Acid Phosphatase Assay provides a convenient method for detecting AP activity in plasma, serum, urine, and semen. The assay utilizes para-nitrophenyl phosphate (pNPP) as a chromogenic substrate for the enzyme. In the first step, AP dephosphorylates pNPP. In the second step, the…

Progesterone, along with pregnenolone, is the biosynthetic precursor of all other steroid hormones. The main function of progesterone is to prepare the uterine lining for implantation of a fertilized ovum and to maintain pregnancy. Measurement of serum or plasma progesterone levels are used as an…

Reactive oxygen species (ROS) react with proteins, resulting in protein modification, such as protein sulfenylation through the reversible oxidation of cysteine residues. Redox-sensitive cysteine residues in proteins can function as sensors of ROS and serve as molecular switches, activating or…

Insulin is a polypeptide hormone with a molecular weight of 6 kDa, composed of two peptides chains, A and B, cross-linked by two disulfide bonds and synthesized by the b cells of the islets of Langherans of the pancreas. Insulin influences many metabolic functions of the body. Its best known action…

Urinary creatinine levels are commonly used as an index of standardization for a variety of other tests. Measurement of creatinine clearance is also useful in detecting renal disease and estimating the extent of impairment of renal function. The Cayman Chemical Creatinine (urinary) Colorimetric…

Cayman’s PC Assay provides a specific, sensitive, and convenient method for quantifying PC in plasma or serum. In this assay, PC-Specific PLD hydrolyzes PC to choline and phosphatidic acid. The newly formed choline is then used to generate hydrogen peroxide in a reaction catalyzed by choline…

Oct4 is an essential regulator of embryonic stem cell pluripotency and used as a marker for undifferentiated cells. It also plays a role in gene expression, DNA repair and/or replication, signal transduction and tumorigenesis. Cayman’s Oct4 Transcription Factor Assay is a non-radioactive,…

Cayman's NETosis Assay Kit provides a simple and fast method for studying the process of NETosis ex vivo. Notably, Cayman's NETosis Assay Kit does not depend upon the DNA component of neutrophil extracellular traps (NETs), as DNA release can occur independently of NETosis. In this kit,…

Uric acid (urate) is the end product of human purine metabolism and is mainly excreted in urine. Many factors, including genetic components and acquired factors, such as obesity and alcohol consumption, influence serum uric acid concentrations. Hyperuricemia induces or facilitates gout, kidney…

Cayman’s SOD Assay is a fast and reliable assay for the measurement of SOD activity from plasma, serum, tissue homogenates, and cell lysates. SOD activity is assessed by measuring the dismutation of superoxide radicals generated by xanthine oxidase and hypoxanthine in a convenient 96-well…

For the measurement of acylated ghrelin.

HDACs catalyze the hydrolytic removal of acetyl groups from histone lysine residues resulting in chromatin condensation and transcriptional repression of chromosomal DNA. Thus, HDAC inhibition allows the conformation of DNA to be relaxed and transcriptional activation to ensue. Transcriptional…

This assay has been developed for researchers that do not have experience performing ELISAs. It can be used as a practice tool allowing you to become comfortable with running Cayman ELISAs. This kit contains enough reagents to run at least four complete standard curves.

Estradiol is the major estrogen secreted by the premenopausal ovary. Estrogens direct the development of the female genotype in embryogenesis and at puberty. In addition, estradiol is an important luteolytic agent in humans. Plasma estradiol levels increase gradually between days 1-7 of the…

Nicotinamide adenine dinucleotide (NAD) exists in an oxidized form, NAD+, as well as a reduced form, NADH. NAD, the main free form in cells, functions in modulating cellular redox status and by controlling signaling and transcriptional events, making it an important cofactor when investigating…

The live cell multiplex (LCM) assay provides an efficient fluorescence-based method of quantifying the relative number of live cells resident in treated wells of an assay plate. While the LCM assay may be performed as a stand-alone assay, it is has been specifically optimized to be run in multiplex…