Metabolism Assays

For quantitative determination of xanthine and drug effects on its metabolism. Key Features: Sensitive and accurate. Use as little as 10 µL samples. Linear detection range in 96-well plate for 30 minute incubation: 0.01 to 2.5 mM xanthine for colorimetric assays and 3 to 250 µM for fluorimetric assays. Simple and convenient. The procedure involves addition of a single working reagent and incubation for 30 min at room temperature. Fast and high-throughput. Assays using 96-well plates and liquid handling system could allow simultaneous processing tens of thousands of samples per day. Method: OD570nm, FL530/585nm. Samples: Cell lysate, serum, and other biological samples. Species: All. Procedure: Assay takes 30 min. Kit size: 100 tests. Detection limit: FL 3 µM; OD 10 µM.

For quantitative determination of xanthine oxidase enzyme activity and evaluation of its modulators. Key Features: Sensitive and accurate. Use as little as 10 µL samples. Linear detection range in 96-well plate for 20 minute incubation: 0.03 to 25 U/L xanthine oxidase for colorimetric assays and 0.01 to 2.5 U/L for fluorimetric assays. Simple and high-throughput. The procedure involves addition of a single working reagent and incubation for 20 min at room temperature. Method: OD570nm, FL530/585nm. Samples: Cell lysate, serum, and other biological samples. Species: All. Procedure: Assay takes 20 min. Kit size: 100 tests. Detection limit: FL 0.01 U/L; OD 0.03 U/L.

For quantitatve determination of acetaldehyde and evaluations of drug effects on its metabolism. Key Features: Fast and sensitive. Linear detection range (50µL sample): 0.5 µM to 60 µM acetaldehyde in 96-well plate assay. High-throughput. The procedure involves adding a single working reagent, and reading the absorbance after 30 minutes. Room temperature assay. No 37°C heater is needed. Convenient. Homogeneous "mix-incubate-measure" type assay. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Method: FL530/585nm. Samples: Biological samples (e.g. plasma, serum, urine, tissue and culture media) and food/beverage samples (e.g. wine, coffee, and juice). Species: All. Procedure: Assay takes 30 min. Kit size: 100 tests. Detection limit: 0.5 µM.

For quantitative determination of total bile acids and evaluation of drug effects on bile acid metabolism. Key Features: Safe. Non-radioactive assay. Sensitive and accurate. Linear detection range of 1 - 150 µM bile acids. Convenient and high-throughput. Homogeneous "mix-incubate-measure" type assay. No wash and reagent transfer steps are involved. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Method: FL530/585nm. Samples: Serum, plasma, urine and other biological samples. Species: All. Procedure: Assay takes 20 min. Kit size: 100 tests. Detection limit: 1 µM.

For quantitative determination of D-lactate (D-lactic acid) and evaluation of drug effects on its metabolism. Key Features: Sensitive and accurate. Detection limit of 1 µM and linearity up to 50 µM D-lactate in 96-well plate assay. Convenient. The procedure involves adding a single working reagent, and reading the fluorescence after 60 min. Room temperature assay. High-throughput. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: FL530/585 nm. Samples: Serum, plasma, cell culture media etc. Species: All. Procedure: Assay takes 60 min. Kit size: 100 tests. Detection limit: 1 µM.

For quantitative determination of glucose uptake in whole cells and evaluation of effects of ligands or drugs on glucose transport. Key Features: Safe. No radioactive material is used. Sensitive and Accurate. Detection limit of 0.1 µM and linearity up to 5 µM 2-DG6P. Simple and Convenient. Can be automated as a medium throughput assay for glucose transport in cells. Method: FL530/585nm. Samples: Cell culture. Species: Mammalian. Procedure: Assay takes Approximately 2 hrs. Kit size: 100 tests. Detection limit: 0.1 µM.

For determination of SHP2(Y542) phosphorylation status in whole cells and evaluation of pathway modulation by activators, inhibitors, siRNA etc. Key Features: New and improved. Total assay time reduced from the standard 21 hours to 6.5 hours (hands-on time 2.5 hrs). Simple and convenient. Cells are directly cultured in 96-well plates. No cell lysis necessary. Accurate and high-throughput. Protein phosphorylation is normalized to total cellular protein in the same well, greatly minimizing well-to-well variations. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: Cell-Based ELISA (FL530/585 nm, 360/450 nm). Samples: Cells. Species: human. Procedure: Assay takes Assay takes 6.5 hrs, hands-on time 2.5 hrs. Kit size: 100 tests.

For determination of 4EBP1(S65) phosphorylation status in whole cells and evaluation of pathway modulation by activators, inhibitors, siRNA etc. Key Features: New and improved. Total assay time reduced from the standard 21 hours to 6.5 hours (hands-on time 2.5 hrs). Simple and convenient. Cells are directly cultured in 96-well plates. No cell lysis necessary. Accurate and high-throughput. Protein phosphorylation is normalized to total cellular protein in the same well, greatly minimizing well-to-well variations. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: Cell-Based ELISA (FL530/585 nm, 360/450 nm). Samples: Cells. Species: human (S65), mouse/rat (S64). Procedure: Assay takes Assay takes 6.5 hrs, hands-on time 2.5 hrs. Kit size: 100 tests.

For determination of AKT1(S473) phosphorylation status in whole cells and evaluation of pathway modulation by activators, inhibitors, siRNA etc. Key Features: New and improved. Total assay time reduced from the standard 21 hours to 6.5 hours (hands-on time 2.5 hrs). Simple and convenient. Cells are directly cultured in 96-well plates. No cell lysis necessary. Accurate and high-throughput. Protein phosphorylation is normalized to total cellular protein in the same well, greatly minimizing well-to-well variations. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: Cell-Based ELISA (FL530/585 nm, 360/450 nm). Samples: Cells. Species: human, rat and mouse. Procedure: Assay takes Assay takes 6.5 hrs, hands-on time 2.5 hrs. Kit size: 100 tests.

For determination of GSK3A(S21) phosphorylation status in whole cells and evaluation of pathway modulation by activators, inhibitors, siRNA etc. Key Features: New and improved. Total assay time reduced from the standard 21 hours to 6.5 hours (hands-on time 2.5 hrs). Simple and convenient. Cells are directly cultured in 96-well plates. No cell lysis necessary. Accurate and high-throughput. Protein phosphorylation is normalized to total cellular protein in the same well, greatly minimizing well-to-well variations. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: Cell-Based ELISA (FL530/585 nm, 360/450 nm). Samples: Cells. Species: human, rat, mouse, and canine. Procedure: Assay takes Assay takes 6.5 hrs, hands-on time 2.5 hrs. Kit size: 100 tests.

For determination of GSK3B(S9) phosphorylation status in whole cells and evaluation of pathway modulation by activators, inhibitors, siRNA etc. Key Features: New and improved. Total assay time reduced from the standard 21 hours to 6.5 hours (hands-on time 2.5 hrs). Simple and convenient. Cells are directly cultured in 96-well plates. No cell lysis necessary. Accurate and high-throughput. Protein phosphorylation is normalized to total cellular protein in the same well, greatly minimizing well-to-well variations. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: Cell-Based ELISA (FL530/585 nm, 360/450 nm). Samples: Cells. Species: human, rat and mouse. Procedure: Assay takes Assay takes 6.5 hrs, hands-on time 2.5 hrs. Kit size: 100 tests.

For determination of LKB1(S431) phosphorylation status in whole cells and evaluation of pathway modulation by activators, inhibitors, siRNA etc. Key Features: New and improved. Total assay time reduced from the standard 21 hours to 6.5 hours (hands-on time 2.5 hrs). Simple and convenient. Cells are directly cultured in 96-well plates. No cell lysis necessary. Accurate and high-throughput. Protein phosphorylation is normalized to total cellular protein in the same well, greatly minimizing well-to-well variations. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: Cell-Based ELISA (FL530/585 nm, 360/450 nm). Samples: Cells. Species: human, mouse, and rat. Procedure: Assay takes Assay takes 6.5 hrs, hands-on time 2.5 hrs. Kit size: 100 tests.

For determination of RB(T821/826) phosphorylation status in whole cells and evaluation of pathway modulation by activators, inhibitors, siRNA etc. Key Features: New and improved. Total assay time reduced from the standard 21 hours to 6.5 hours (hands-on time 2.5 hrs). Simple and convenient. Cells are directly cultured in 96-well plates. No cell lysis necessary. Accurate and high-throughput. Protein phosphorylation is normalized to total cellular protein in the same well, greatly minimizing well-to-well variations. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: Cell-Based ELISA (FL530/585 nm, 360/450 nm). Samples: Cells. Species: human, rat and mouse. Procedure: Assay takes Assay takes 6.5 hrs, hands-on time 2.5 hrs. Kit size: 100 tests.

For determination of RPS6(S235/236) phosphorylation status in whole cells and evaluation of pathway modulation by activators, inhibitors, siRNA etc. Key Features: New and improved. Total assay time reduced from the standard 21 hours to 6.5 hours (hands-on time 2.5 hrs). Simple and convenient. Cells are directly cultured in 96-well plates. No cell lysis necessary. Accurate and high-throughput. Protein phosphorylation is normalized to total cellular protein in the same well, greatly minimizing well-to-well variations. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: Cell-Based ELISA (FL530/585 nm, 360/450 nm). Samples: Cells. Species: human, rat and mouse. Procedure: Assay takes Assay takes 6.5 hrs, hands-on time 2.5 hrs. Kit size: 100 tests.

For quantitative fluorimetric determination of isocitrate and evaluation of drug effects on its metabolism. Key Features: Fast and sensitive. Linear detection range (20 µL sample): 0.6 to 500 µM for 10 min reaction. Convenient and high-throughput. Homogeneous "mix-incubate-measure" type assay. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Method: FL530/585 nm. Samples: Food, beverage, biological samples (e.g. cell lysate, tissue homogenate, serum, etc.). Species: All. Procedure: Assay takes 10 min. Kit size: 100 tests. Detection limit: 0.6 µM.

For quantitative determination of L-lactate (L-lactic acid) and evaluation of drug effects on its metabolism. Key Features: Sensitive and accurate. Detection limit of 1 µM and linearity up to 50 µM L-lactate in 96-well plate assay. Convenient. The procedure involves adding a single working reagent, and reading the fluorescence after 60 min. Room temperature assay. High-throughput. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: FL530/585 nm. Samples: Serum, plasma, cell culture media etc. Species: All. Procedure: Assay takes 60 min. Kit size: 100 tests. Detection limit: 1 µM.

For sensitive determination of NAD and NADH and evaluation of drug effects on NAD/NADH metabolism. Key Features: Sensitive and accurate. Detection limit of 0.02 µM and linearity up to 1 µM NAD+/NADH in 96-well plate assay. Convenient. The procedure involves adding a single working reagent, and reading the fluorescence at time zero and 10 min. High-throughput. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Method: F530/585nm. Samples: Cell, tissue extracts etc. Species: All. Procedure: Assay takes 10 min. Kit size: 100 tests. Detection limit: 0.02 µM.

For quantitative determination of NADP and NADPH and evaluation of drug effects on their metabolism.

For rapid, quantitative, bioluminescent determination of ADP concentration and evaluation of drug effects on ADP metabolism. Key Features: Safe. Non-radioactive assay. Sensitive and accurate. As low as 0.02 µM ADP can be quantified. Homogeneous and convenient. "Mix-incubate-measure" type assay. No wash and reagent transfer steps are involved. Robust and amenable to HTS: Z factors of 0.5 and above are routinely observed in 96-well and 384-well plates. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Method: Luminescence. Samples: Cells etc. Species: All. Procedure: Assay takes 20 min. Kit size: 100 tests. Detection limit: 0.02 µM.

For quantitative bioluminescent assay for ADP:ATP ratio (apoptosis) in cells and screen for modulators. Key Features: Safe. Non-radioactive assay. Homogeneous and convenient. "Mix-incubate-measure" type assay. No wash and reagent transfer steps are involved. Robust and amenable to HTS: Z factors of 0.5 and above are routinely observed in 96-well and 384-well plates. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Method: Luminescence. Samples: Cells etc. Species: All. Procedure: Assay takes 20 min. Kit size: 100 tests.

For rapid, quantitative, bioluminescent determination of ATP and evaluation of drug effects on ATP metabolism. Key Features: Safe. Non-radioactive assay. Sensitive and accurate. As low as 0.02 µM ATP or a single cell can be quantified. Homogeneous and convenient. "Mix-incubate-measure" type assay. No wash and reagent transfer steps are involved. Robust and amenable to HTS: Z factors of > 0.5 are routinely observed in 96-well and 384-well plates. Can be readily automated on HTS liquid handling systems. Method: Luminescence. Samples: Cells etc. Species: All. Procedure: Assay takes 10 min. Kit size: 100 tests. Detection limit: 0.02 µM.

For quantitative determination of creatinine and evaluation of drug effects on creatinine metabolism. Key Features: Sensitive and accurate. Use 30 µL samples. Detection limit 0.10 mg/dL (8 µM) creatinine in 96-well plate assay. Simple and high-throughput. The procedure involves addition of a single working reagent and incubation for 5 min. Can be automated as a high-throughput assay for thousands of samples per day. Improved reagent stability and versatility. The optimized formulation has greatly enhanced reagent and signal stability. Assays can be executed in 96-well plate or cuvet. Low interference in biological samples. No pretreatments are needed. Assays can be directly performed on raw biological samples. Method: OD510nm. Samples: Urine, serum, plasma and biological preparations. Species: All. Procedure: Assay takes 20 min. Kit size: 500 tests. Detection limit: 0.1 mg/dL (8 µM).

For quantitative determination of ethanol and alcohol metabolism. Key Features: Sensitive and accurate. Detection range 0.04 - 4% alcohol in 96-well plate assay. Convenient and high-throughput. The procedure involves adding a single working reagent, incubation for 8 min, adding a Stop Reagent, and reading the optical density. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Versatility. Assays can be executed in 96-well plate or cuvet. Method: OD580nm (Chemical). Samples: Alcoholic beverages etc. Species: All. Procedure: Assay takes 10 min. Kit size: 500 tests. Detection limit: 0.04%.

For quantitative determination of long-chain fatty acid uptake in whole cells and evaluation of effects of ligands or drugs on fatty acid transport. Key Features: Safe. Non-radioactive assay. Fast and Sensitive. Homogenous "add-and-read" assay. No wash, lysis, or staining steps needed. Simple and Convenient. Can be automated as a high-throughput assay for fatty acid transport and modulator screens in cells. Method: FL 488/523nm. Samples: Adipocytes and other fatty acid transporting cells. Species: All. Procedure: Assay takes 2 hrs. Kit size: 100 Tests.

For quantitative determination of free amino nitrogen in foods and beverages. Key Features: Fast and sensitive. Linear detection range (5 µL sample): 0.2 to 10 mM for 10 min reaction. Convenient and high-throughput. Homogeneous "mix-incubate-measure" type assay. Can be readily automated to process thousands of samples per day. Method: OD575nm. Samples: Food and Beverages. Species: All. Procedure: Assay takes 20 min. Kit size: 100 tests.

For quantitative determination of glucose and evaluation of drug effects on glucose metabolism. Key Features: Sensitive and accurate. Use as little as 5 µL samples. Linear detection range 0.7 mg/dL (39 µM) to 300 mg/dL (16.6 mM) glucose in 96-well plate. Simple and convenient. The procedure involves addition of a single working reagent and incubation for 8 min in a boiling water bath. Improved reagent stability. The optimized formulation has greatly enhanced the reagent and signal stability. Low interference in biological samples. No pretreatments are needed. Assays can be directly performed on serum and plasma samples. Method: OD630nm. Samples: Biological, food and beverage. Species: All. Procedure: Assay takes 10 min. Kit size: 100 tests. Detection limit: 0.7 mg/dL (39 µM).

For quantitative determination of D-glucose dehydrogenase enzyme activity and drug effects on its metabolism. Key Features: Fast and sensitive. Linear detection range (20 µL sample): 0.5 to 200 U/L for 15 min reaction. Convenient and high-throughput. Homogeneous "mix-incubate-measure" type assay. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Method: OD565nm. Samples: Biological samples (e.g. plasma, serum, tissue and culture media). Species: All. Procedure: Assay takes 15 min. Kit size: 100 tests. Detection limit: 0.5 U/L.

For quantitative colorimetric determination of glucose-6-phosphate concentration and evaluation of drug effects on its metabolism. Key Features: Fast and sensitive. Linear detection range (20 µL sample): 0.2 to 100 U/L for 15 min reaction. Convenient and high-throughput. Homogeneous "mix-incubate-measure" type assay. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Method: OD460nm. Samples: Plasma, serum, tissue and culture media, etc. Species: All. Procedure: Assay takes 20 min. Kit size: 100 tests. Detection limit: 0.2 U/L.

For quantitative determination of heme and evaluation of drug effects on heme metabolism. Key Features: Sensitive and accurate. Linear detection range 0.6 - 125 µM heme in 96-well plate assay. Simple and high-throughput. The "mix-and-read" procedure involves addition of a single working reagent and reading the optical density. Can be readily automated as a high-throughput assay in 96-well plates for thousands of samples per day. Safety. Reagents are non-toxic. Versatility. Assays can be executed in 96-well plate or cuvet. Method: OD400nm. Samples: Blood, serum, plasma, urine etc. Species: All. Procedure: Assay takes 5 min. Kit size: 250 tests. Detection limit: 0.6 µM.

For quantitative determination of hemoglobin and evaluation of drug effects on hemoglobin metabolism. Key Features: Sensitive and accurate. Linear detection range 0.9 - 200 mg /dL hemoglobin in 96-well plate assay. Simple and high-throughput. The "mix-and-read" procedure involves addition of a single working reagent and reading the optical density. Can be readily automated as a high-throughput assay in 96-well plates for thousands of samples per day. Safety. Reagents do not contain any toxic components, e.g. hexacyanoferrate(III) and potassium cyanide used in Drabkin's reagent. Versatility. Assays can be executed in 96-well plate or cuvet. Method: OD400nm. Samples: Blood, serum, plasma, urine etc. Species: All. Procedure: Assay takes 5 min. Kit size: 250 tests. Detection limit: 0.9 mg/dL.

For quantitative colorimetric kinetic determination of isocitrate dehydrogenase activity and evaluation of drug effects on its metabolism. Key Features: Fast and sensitive. Linear detection range (20 µL sample): 0.1 to 100 U/L for 30 min reaction. Convenient and high-throughput. Homogeneous "mix-incubate-measure" type assay. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Method: OD565nm. Samples: Plasma, serum,tissue and culture media etc. Species: All. Procedure: Assay takes 30 min. Kit size: 100 tests. Detection limit: 0.1 U/L.

For quantitative determination of total protein. Key Features: Sensitive and accurate. Use 10 mL samples. Detection range 0.06 - 1.0 mg /mL protein in 96-well plate assay. Simple and high-throughput. The "mix-and-read" procedure involves addition of a single working reagent and reading the optical density. Can be readily automated as a high-throughput assay in 96-well plates for thousands of samples per day. Low interference. Glucose, Tris, vitamins, and amino acids, DNA, RNA, salts, EDTA (< 12 mM), phenol (< 50 mM), urea (< 0.6 M), Triton (<0.1%) and SDS (< 0.1% SDS) do not interfere in the assay. Versatility: assays can be executed in 96-well plate or cuvet. Method: OD595nm (Bradford). Samples: Biological, food, agriculture etc. Species: All. Procedure: Assay takes 2 min. Kit size: 500 tests. Detection limit: 60 µg/mL.

For quantitative determination of urinary protein and creatinine concentrations (protein/creatinine ratio, UPCR). Key Features: Sensitive and accurate. Use 20 µL samples. Linear detection range in 96-well plate: 1 - 20 mg/dL Protein and 1 - 150 mg/dL Creatinine. Fast and convenient. No sample pre-treatment is needed. Simple 10- minute "add-incubate-read" procedure. High-throughput adaptable. The procedure can be readily automated for processing thousands of samples per day. Method: OD600 and OD530nm. Samples: Urine samples. Species: All. Procedure: Assay takes 10 min. Kit size: 100 tests. Detection limit: 1 mg/dL Protein and 1 mg/dL Creatinine.

For quantitative determination of salicylate in biological samples and beauty products, mouthwash, etc. Key Features: Fast and sensitive. Linear detection range: 0.8 mM (10.9 mg/dL) to 20 mM (274.2 mg/dL) salicylate with 20 µL sample (96-well). Convenient. The procedure involves adding a single working reagent. High-throughput. "Add-mix-read" type assay. Can be readily automated as a high-throughput 96-well or 384-well plate assay for thousands of samples per day. Method: OD560nm. Samples: Serum, plasma, urine, food, beverage, agriculture, drugs, beauty, mouthwash samples, etc. Species: All. Procedure: Assay takes 30 min. Kit size: 100 Tests.

For quantitative determination of free and total sialic acid (NANA) and evaluation of drug effects on sialic acid. Key Features: Sensitive and accurate. Use as little as 60 µL samples. Linear detection range in 96-well plate: 5 to 1000 µM sialic acid for colorimetric assays and 0.5 to 100 µM for fluorimetric assays. Method: OD549nm, or FL555/585nm. Samples: Serum, plasma, saliva, milk etc. Species: All. Procedure: Assay takes 2.5 hrs. Kit size: 100 tests. Detection limit: OD, FL: 5, 0.5 µM.

For quantitative determination of sorbitol dehydrogenase enzyme activity. Key Features: Fast and sensitive. Linear detection range (20 µL sample): 0.1 to 125 U/L for 12 min reaction. Convenient and high-throughput. Homogeneous "mix-incubate-measure" type assay. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Method: OD565nm. Samples: Biological samples e.g. plasma, serum, urine, tissue and culture media. Species: All. Procedure: Assay takes 15 min. Kit size: 100 tests. Detection limit: 0.1 U/L.

For quantitative determination of hemoglobin (Hb) in whole blood. Key Features: Safety. Non-hazardous. Reagents do not contain any toxic components, e.g. hexacyanoferrate(III) and potassium cyanide used in Drabkin's reagent. Simple and high-throughput. The "mix-and-read" procedure involves addition of a single reagent and reading the optical density. Can be readily automated as a high-throughput assay in 96-well plates for thousands of samples per day. Versatility. Assays can be executed in 96-well plate or cuvette. High sensitivity. As low as 5 µL sample is used. Ideal when samples are limited such as mice blood samples. Method: OD570nm. Samples: Whole blood samples. Species: All. Procedure: Assay takes 5 min. Kit size: 250 tests. Detection limit: 0.2 g/dL.

For quantitative determination of α-glucosidase activity and evaluation of drug effects on its metabolism. Key Features: High sensitivity and wide linear range. Use 20 µL sample. The detection limit is 2 U/L, linear up to 250 U/L. Homogeneous and simple procedure. Simple "mix-and-measure" procedure allows reliable quantitation of α-glucosidase activity within 20 minutes. Robust and amenable to HTS. All reagents are compatible with high-throughput liquid handling instruments. Method: OD405nm. Samples: Biological. Species: All. Procedure: Assay takes 20 min. Kit size: 100 tests. Detection limit: 2 U/L.

For quantitative determination of α-L-Fucosidase activity in biological samples. Key Features: High sensitivity and wide linear range. Linear detection range (10 µL sample): 1 to 100 U/L. Homogeneous and simple procedure. Simple add-mix-read procedure allows reliable quantitation of fucosidase activity within 20 minutes. Robust and amenable to HTS. All reagents are compatible with high-throughput liquid handling instruments. Can be readily automated to measure thousands of samples per day. Method: OD405nm. Samples: Plasma, serum, tissue, cell lysate, etc. Species: All. Procedure: Assay takes 20 min. Kit size: 100 tests. Detection limit: 1 U/L.

For quantitative determination of α-mannosidase enzyme activity. Key Features: Fast and sensitive. Linear detection range (10 µL sample): 1 to 250 U/L for a 10 minute reaction. Convenient and high-throughput. Homogeneous "mix-incubate-measure" type assay. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Method: OD405nm. Samples: Biological samples e.g. plasma, serum, tissue and culture media. Species: All. Procedure: Assay takes 10 min. Kit size: 100 tests. Detection limit: 1 U/L.

For quantitative determination of β-glucosidase activity and evaluation of drug effects on its metabolism. Key Features: High sensitivity and wide linear range. Use 20 µL sample. The detection limit is 2 U/L, linear up to 250 U/L. Homogeneous and simple procedure. Simple "mix-and-measure" procedure allows reliable quantitation of β-glucosidase activity within 20 minutes. Robust and amenable to HTS. All reagents are compatible with high-throughput liquid handling instruments. Method: OD405nm. Samples: Biological. Species: All. Procedure: Assay takes 20 min. Kit size: 100 tests. Detection limit: 2 U/L.

For quantitative determination of hydroxyproline and collagen in biologic and cosmetic samples. Key Features: Safe. Our hydroxyproline assay uses an improved perchlorate-free chemistry. Sensitive and accurate. Uses 20 µL sample. Linear detection range 0.5 µg/mL to 50 µg/mL hydroxyproline in 96-well plate assay. Convenient. Collagen can be hydrolyzed in Eppendorf tubes, and final incubation can be performed at 37°C. Method: OD560nm. Samples: Hydroxyproline and collagen in biologic and cosmetic samples. Species: All. Procedure: Assay takes Approx. 2 hrs. Kit size: 100 Tests. Detection limit: 0.5 µg/mL.

For quantitatve determination of cholesterol uptake in cells and screening of modulators on cholesterol uptake. Key Features: Convenient. Treat cells directly in 96-well fluorescent plate. Safe. Non-radioactive assay. High-throughput. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day Method: FL485/535nm. Samples: Adherent cells. Species: All. Procedure: Assay takes 24-72 hrs, hand-on time 1 hr. Kit size: 100 tests.

For quantitative determination of DNA. Key Features: Sensitive and accurate. Linear detection range 2 ng to 40 ng (100 - 2,000 ng/mL) calf thymus DNA in 96-well plate assay. Simple and high-throughput. The "mix-and-read" procedure involves addition of a single working reagent and reading the fluorescence intensity. Can be readily automated as a high-throughput assay for thousands of samples per day. Low interference. RNA, salt (up to 3M NaCl), detergent (< 0.01% SDS) and common DNA extraction buffer do not interfere in the assay. Method: FL350/450nm. Samples: Plasmid DNA, genomic DNA, cDNA, DNA following polymerase chain reaction, and DNA extracted from gel and other matrices. Species: All. Procedure: Assay takes 5 min. Kit size: 250 tests. Detection limit: 100 ng/mL.