EnzyChrom™ Cholesterol Assay Kit
Protocol SDS  Printed Protocols and SDSs are not provided with kits.

Application
For quantitative determination of cholesterol and evaluation of drug effects on cholesterol metabolism.

Key Features
Sensitive and accurate. Detection limit of 5 mg/dL, linearity up to 300 mg/dL cholesterol in 96-well plate assay.

Convenient. Room temperature assay. No 37°C heater is needed.

High-throughput. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day.

Method
OD340nm

Samples
Serum, plasma etc

Species
All

Procedure
40 min

Size
100 tests

Detection Limit
5 mg/dL

Shelf Life
6 months

More Details
CHOLESTEROL is a sterol and lipid present in the cell membranes, and is transported in the bloodstream of all animals. It is used to form cell membranes and hormones, and plays important roles in cell signaling processes. Elevated levels (hypercholesterolemia) have been associated with cardiovascular diseases such as atherosclerosis; whereas, low levels (hypocholesterolemia) may be linked to depression, cancer and cerebral hemorrhage. Simple, direct and automation-ready procedures for measuring cholesterol are very desirable. BioAssay Systems EnzyChrom™ Cholesterol Assay is based on cholesterol esterase hydrolysis of cholesterol esters to form free cholesterol and cholesterol dehydrogenase catalyzed conversion of cholesterol to cholest-4-ene-3-one, in which NAD is reduced to NADH. The optical density of the formed NADH at 340 nm is directly proportionate to the cholesterol concentration in the sample.

1. I would like to know whether egg yolk can be used for such a kit. If this doesn’t work, can you suggest us another protocol, please?



Egg yolk cholesterol extraction protocol:

1. Prepare extraction buffer with 5 vol isopropanol, 2 vol water, 2 vol Triton X-100.

2. In a 1.5mL Eppendorf tube, mix 50µL yolk with 450 µL of the extraction buffer. Vortex for at least 30 sec.

3. Centrifuge 4 min at 14,000rpm on a table centrifuge.

4. Remove supernatant and perform cholesterol assay.

2. What is the principle of the ECCH-100 cholesterol assay?



Cholesterol esterase cleaves esters into cholesterol, which is oxidized to form NADH in the presence of cholesterol dehydrogenase. The produced NADH is measured colorimetrically.

3. Will the assay detect the cholesterol in the lipoproteins, or only free-cholesterol in the serum?



The assay will detect total serum cholesterol, i.e. protein-bound serum (VLDL/LDL/HDL) and free cholesterol.

For more detailed product information and questions, please feel free to Contact Us. Or for more general information regarding our assays, please refer to our General Questions
Al-Ziadi, R. E (2017). The effect of Mutagens agent Ethidium bromide on some therapeutic properties for local Iraqi isolate Saccharomyces boulardii. Scientific Journal of Medical Research 1.1: 13-18. Assay: Cholesterol in Saccharomyces boulardii (Yeast) culture medium.

Brooks, Sylwia W., Ava C. Dykes, and Bernard G. Schreurs (2017). A high-cholesterol diet increases 27-hydroxycholesterol and modifies estrogen receptor expression and neurodegeneration in rabbit hippocampus. Journal of Alzheimer's Disease 56.1 (2017): 185-196. Assay: Cholesterol in rabbits serum.

Hidanah, Sri, et al (2017). Effects of mangosteen peel (Garcinia mangostana) and ginger rhizome (Curcuma xanthorrhiza) on the performance and cholesterol levels of heat-stressed broiler chickens. Pakistan Journal of Nutrition 16.1: 28-32. Assay: Cholesterol in broiler chicks tissues.

Kwan, Billy KY, et al (2017). Marine microalgae as dietary supplements in the culture of juvenile Chinese horseshoe crabs, Tachypleus tridentatus (Xiphosura). Aquaculture research 48.7: 3910-3924. Assay: Cholesterol in horseshoe crabs plasma.

Mellado, Miguel, et al (2017). Effect of quality of colostrum on health, growth and immunoglobulin G concentration in Holstein calves in a hot environment. Animal Science Journal 88.9: 1327-1336. Assay: Cholesterol in calves serum.

Meza-Herrera, Cesar A., et al (2017). Beta-carotene supplementation positively affects selected blood metabolites across time around the onset of puberty in goats. Czech Journal of Animal Science 62.1 (2017): 22-31. Assay: Cholesterol in goats serum.

Ryan, Paul M., et al (2017). Microbiome and metabolome modifying effects of several cardiovascular disease interventions in apo-E-/- mice. Microbiome 5.1: 30. Assay: Cholesterol in mice serum.

Ryan, Paul M., et al (2017). Recombinant incretin-secreting microbe improves metabolic dysfunction in high-fat diet fed rodents. Scientific reports 7.1: 13523. Assay: Cholesterol in rodent serum.

Stanton, Catherine, et al (2017). Exopolysaccharide-producing bacteria, and uses thereof for protecting heart health. U.S. Patent No. 9,808,493. Assay: Cholesterol in mice serum.

Kaliber, M., N. Koluman, and N. Silanikove (2016). Physiological and behavioral basis for the successful adaptation of goats to severe water restriction under hot environmental conditions. animal 10.1: 82-88. Assay: Cholesterol in goats plasma.

King, Gregory D., et al (2016). Watershed-scale land use activities influence the physiological condition of stream fish. Physiological and Biochemical Zoology 89.1: 10-25. Assay: Cholesterol in fish plasma.

Liss, Stephanie A., et al (2016). Physiological consequences of hybridization: early generation backcrossing decreases performance in invasive bigheaded carps. Journal of Freshwater Ecology 31.4: 543-554. Assay: Cholesterol in fish plasma.

Liss, S. et al (2013). Spatial and temporal influences on the physiological condition of invasive silver carp. Conserv Physiol. 1 (1): cot017 Assay: Cholesterol in fish (silver carp) plasma.

Safwat Y, et al (2013). Modulation of skeletal muscle performance and SERCA by exercise and adiponectin gene therapy in insulin-resistant rat. DNA Cell Biol. 32(7):378-85. Assay: Cholesterol in rat plasma.

Kang, NH et al (2012). Modulation of lipid metabolism by mixtures of protamine and chitooligosaccharide through pancreatic lipase inhibitory activity in a rat model. Lab Anim Res ;8(1):31-8. Assay: Cholesterol in rat feces.

Kang, NH et al (2012). Risk of cardiovascular disease is suppressed by dietary supplementation with protamine and chitooligosaccharide in Sprague-Dawley rats. Mol Med Rep. ;7(1):127-33. Assay: Cholesterol in rat feces.

Mellado, M et al (2012). Effect of dietary energy intake and somatotropin administration after weaning on growth rate and semen characteristics of Granadina goat bucks. Turk. J. Vet. Anim. Sci. 36(4): 338-345. Assay: Cholesterol in goat buck sersum.

Schlotter F, Matsumoto Y, Mangner N, Schuler G, Linke A, et al. (2012). Regular Exercise or Changing Diet Does Not Influence Aortic Valve Disease Progression in LDLR Deficient Mice. PLoS ONE 7(5): e37298. Assay: Cholesterol in mice serum.

Se, EY et al (2012). alpha-Lipoic acid reduced weight gain and improved the lipid profile in rats fed with high fat diet. Nutr Res Pract. 6(3):195-200. Assay: Cholesterol in rat plasma.

Henein, HY et al (2011). Effect of adrenomedullin gene delivery on insulin resistance in type 2 diabetic rats. J Adv Res 2(1): 57-64. Assay: Cholesterol in rat serum.

Hoda, Y. et al ( 2010). Effect of adrenomedullin gene delivery on insulin resistance in type 2 diabetic rats. J. Adv. Res. 2:57-64. Assay: Cholesterol in fish serum.

Hoda, Y. et al ( 2010). Effect of adrenomedullin gene delivery on insulin resistance in type 2 diabetic rats. J. Adv. Res. 2:57-64. Assay: Cholesterol in rat serum.

Hu, M et al. (2010) Effect of prolonged starvation on body weight and blood-chemistry in two horseshoe crab species: Tachypleus tridentatus and Carcinoscorpius rotundicauda (Chelicerata: Xiphosura). J. Exp Marine Biol Ecology 395(1-2):112-119. Assay: Cholesterol in crab plasma.

Hu, M et al. (2010). Effect of prolonged starvation on body weight and blood-chemistry in two horseshoe crab species: Tachypleus tridentatus and Carcinoscorpius rotundicauda (Chelicerata: Xiphosura). J Exp Marine Biol Ecol 395(1-2): 112-119. Assay: Cholesterol in Horseshoe crab plasma.

Rubinstein J, et al (2009). Hypercholesterolemia and myocardial function evaluated via tissue doppler imaging. Cardiovasc Ultrasound. 7:56. Assay: Cholesterol in rabbit serum.

To find more recent publications, please click here.
Please inquire or request assay service or call 1-510-782-9988 x 2.
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EnzyChrom™ Cholesterol Assay Kit
Catalog No: ECCH-100
Price: $349    Qty:
For orders of 10 or more kits, please call 1-510-7829988x1 or email us for best pricing and/or bulk order.

Shipping: On Ice
Shipment: Fedex Service
Delivery: 1-2 days (US), 3-6 days (Intl) Storage: -20°C

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