Apolipoprotein AII ELISA Assay
The Apolipoprotein AII ELISA Assay is For Research Use Only
Size: 1×96 wells
Sensitivity: 500 pg/ml
Dynamic Range: 313-20000 pg/ml
Incubation Time: 4.5 hours
Sample Type: Serum, Plasma, or other biological fluids
Sample Size: 100 µL
Alternative Names: Human ApoII
Assay Principle
The Apolipoprotein AII ELISA employs the quantitative sandwich enzyme immunoassay technique. An antibody specific for ApoAII has been pre-coated onto a microtiter plate. Standards or samples are pipetted into the wells and any ApoAII present is bound by the immobilized antibody. After washing away any unbound substances, a biotin-conjugated antibody specific for ApoAII is added to each well and incubate. Following a washing to remove unbound substances, streptavidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After washing away any unbound antibody-enzyme reagent, a substrate solution (TMB) is added to the wells and color develops in proportion to the amount of ApoAII bound in the initial step. The color development is stopped by the addition of acid and the intensity of the color is measured at a wavelength of 450nm ±2nm.The concentration of ApoAII in the sample is then determined by comparing the O.D of samples to the standard curve.
Related Products
Apolipoprotein B ELISA Assay
Apolipoprotein AI and B Duplex ELISA
Apolipoprotein CII ELISA Assay Kit
Assay Background
Apolipoprotein AII is the second most abundant protein of the high density lipoprotein particles. The protein is found in plasma as a monomer, homodimer, or heterodimer with apolipoprotein D. Defects in Apolipoprotein AII may result in apolipoprotein AII deficiency or hypercholesterolemia. Apolipoprotein AII may stabilize HDL (high density lipoprotein) structure by its association with lipids, and affect the HDL metabolism.
Assay Procedure
1. Remove excess microtiter strips from the plate frame, return them to the foil pouch containing the desiccant pack, and reseal it. Standards and samples should be assayed in duplicates.
2. Add 100 μl of the Standards and diluted samples into the appropriate wells. Incubate for 2 hours at 37°C or incubate overnight at 4°C on a microplate shaker.
3. Aspirate each well and wash, repeating the process 2 times for a total 3 washes. Wash by filling each well with 1× Wash Buffer (250 μl) using a squirt bottle, manifold dispenser, or autowasher. Complete removal of liquid at each is essential to good performance. After the last wash, remove any remaining Wash Buffer by aspirating, decanting or blotting
4. Add 100 µl of the 1:1000 diluted Conjugated-ApoAII antibody working solution to each well, incubate for 1 hour at room temperature on a microplate shaker.
5. Aspirate each well and wash as step 3.
6. Add 100 µl of the 1:1000 diluted HRP-Streptavidin working solution to all wells and incubate for 1 hour at room temperature on a microplate shaker.
7. Aspirate each well and wash as step 3.
8. Warm TMB substrate solution to room temperature. Add 100 μl of TMB substrate solution into each well. Incubate for 2-30 mins at RT on a microplate shaker. Avoid exposure to light.Note: Watch plate carefully; if color changes rapidly, the reaction may need to be stopped sooner to prevent saturation.
9. Add 100 μl of Stop Solution to each well and shake lightly to ensure homogeneous mixing. 10. Read the OD with a microplate reader at 450nm (optional: read at 620 nm as reference wave length).
Package Inserts
Please note: All documents above are for reference use only and should not be used in place of the documents included with this physical product. If digital copies are needed, please contact us.
