The Amplex® Red Cholesterol Assay Kit provides a sensitive, rapid,
and simple fluorometric method for detecting very low concentrations of
cholesterol using a fluorescence microplate reader or fluorometer. The
assay measures both free cholesterol and cholesteryl esters.
• Detects as little as 200 nM (80 ng⁄ml) cholesterol
• Helps accurately measure cholesterol content of 0.01 ul
of
human serum
• Detects both free cholesterol and cholesteryl esters
• Allows for multiple time point measurements
• Designed for minimal autofluorescence interference
The Amplex Red Cholesterol Assay kit contains these reagents and
buffers:
• Amplex Red reagent
• DMSO
• Horseradish peroxidase
• Hydrogen peroxide
• Cholesterol esterase
• Cholesterol oxidase
• Cholesterol reference standard
• Resorufin fluorescence reference standard
• 5X Reaction buffer
Cholesterol Measurement is Simple and Fast
Performing the Amplex® Red cholesterol assay is quick and easy,
requiring only a 30-minute incubation after addition of reagents with
no separation steps required. The 100 µl assay volume is designed
for
96-well plates; fluorescence can be measured with a microplate reader
or fluorometer. Since the assay is continuous, once the Amplex® Red
reagent is added, multiple time-point measurements can be taken. The
kit is complete with all necessary reagents except deionized water.
Helps Accurately Detect Very Low Cholesterol Concentrations
The Amplex® Red cholesterol assay utilizes enzyme-coupled reactions
to produce highly fluorescent resorufin for quantitation. Resorufin is
produced by the reaction of the Amplex® Red reagent with H2O2
produced from the cholesterol oxidase-catalyzed oxidation of
cholesterol. Because a large proportion of cholesterol in blood is in
the form of cholesteryl esters, cholesterol esterase is used to produce
free cholesterol from cholesterol esters. Performing the assay in the
presence and absence of cholesterol esterase potentially allows
determination of the fractions of cholesterol in each form.
This highly sensitive method allows the Amplex® Red Cholesterol
Assay kit to detect concentrations of cholesterol as low as 200 nM and
measure the cholesterol content of 0.01 µl of human serum.
Because the
absorbance and emission maxima of resorufin are 571 nm and 585 nm
respectively, autofluorescence in most biological samples does not
interfere with the assay.
Use Amplex® Red Assays for a Broad Range
of Investigations
A wide variety of validated Invitrogen Amplex® Red assays are
available for studying cell signaling and lipids, neurobiology,
inflammation and immune function, and metabolism. We also offer
Amplex® UltraRed (Cat. No. A36006), a second-generation reagent
providing greater sensitivity and brighter fluorescence and the
Amplex® Red⁄UltraRed stop reagent (Cat. No. A33855). The
Amplex® Red⁄UltraRed stop reagent provides convenience and
control by allowing the fluorescence signal-generating reaction to be
terminated at a user-determined time point. After addition of the stop
reagent, the fluorescence signal remains stable for at least 3 hours.
Custom assay design and packaging are also available.
For Research Use Only. Not intended for any animal or human therapeutic
or diagnostic use.
Related Link
• Learn
More about Amplex® Red Assays and Technology.
