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Home / ELISA Kit / PharmaTest ELISA Kits

Rituximab (Rituxan) Immunogenicity ELISA

SKU : BHE18300011

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Mfr.No.	EL-141-181
Detection Range	62.5ng/ml - 7.8ng/ml
Reactivity	Human, Mouse, Rat
Assay Duration	3.5 hours
Assay Type	Bridging
Description	Rituximab (Rituxan ) is a chimeric mouse/human monoclonal antibody used for treating B cell malignancy, autoimmune conditions, and graft rejection by depleting B cells from the body. This immunogenicity assay employs the bridging ELISA technique. Reagent preparation Prepare only the appropriate amount of required reagent on the day of use. Store all reagents as per instructions stated on the label. 1. Wash Buffer (1X) Preparation: Dilute wash buffer concentrate with ultra-pure water 1/10 before use (for example add 2mL concentrate to 18mL ultra-pure water). Mix well. 2. Secondary antibody (1X) Preparation: Dilute secondary antibody with assay buffer 1/1000 before use (for examples add 12ul concentrate to 12ml of assay buffer). Mix well. 3. Detection Reagent (1X) Preparation: Dilute detection reagent with assay buffer 1/1000 before use (for example add 12ul concentrate to 12ml of assay buffer). Mix well. Results calculation 1. Because anti-drug antibodies will vary in terms of affinity and concentration, this assay provides a qualitative readout. As such the user should use the comparable positive controls when comparing interassay results. The provided controls are tested for comparability between lots and can be traced. 2. The anti-drug antibody titers in the test samples will fall in the range of high, medium, low or negative. We recommend each lab develop their own statistical cutpoint using methodologies as described by G. Shankar, et al. (2008). (Recommendations for the validation of immunoassays used for detection of host antibodies against biotechnology products. J. Pharmaceutical and Biomedical Analysis 48:12671281). 3. Any sample undiluted or diluted still reading greater than the highest standard should be diluted appropriately with assay buffer and retested. If the samples have been diluted, the concentration determined from the standard curve must be multiplied by the dilution factor. Sample preparation Dilute QC samples and test samples 1/10 with assay buffer (for example add 30uL of prepared calibrator or sample to 270uL of assay buffer). Mix well. Do not store diluted samples. If test samples are out of range, then they may be further diluted.
Detection Method	Peroxidase / OD450
Kit Components	Coated microtiter plate, 96 wells QC samples - 4x50ul 10X wash buffer - 25ml Assay buffer - 50ml 1000X secondary antibody - 17ul 1000X detection reagent - 17ul TMB - 12ml TMB stop solution - 12ml Plate sealers - 3
Limit Of Detection	7.8ng/ml
Components	Coated microtiter plate, 96 wells QC samples - 4x50ul 10X wash buffer - 25ml Assay buffer - 50ml 1000X secondary antibody - 17ul 1000X detection reagent - 17ul TMB - 12ml TMB stop solution - 12ml Plate sealers - 3
Precision	Intra-assay coefficient of variation (CV) <10%. Inter-assay CV <10%.
Notes	This kit is compatible with EDTA-plasma, heparinplasma and serum samples. Samples can be stored at or below -20°C for up to 1 year.
Usage Notes	Quantification of antibodies to Rituximab
Protocol	The Rituximab immunogenicity assay employs the bridging ELISA technique. A precoated 96 well capture antibody plate is provided. Quality control and test samples are pipetted into the appropriate wells. Anti-Rituximab present in biological matrices binds the immobilized capture antibody. After washing away any unbound substances, secondary antibody is added to the wells and after a final wash a detection reagent is added. The plate is washed to remove any unbound antibody-enzyme reagent and a substrate solution is added to the wells for color development. The color development is proportional to the amount of anti-Rituximab present in test samples. Four levels of QC samples give a qualitative reference signal which can be used to determine the level (High, Medium, Low, Negative) of anti-Rituximab antibody in the unknown samples.

Gene ID	931

Applications	ELISA

Storage	-20C, 1 year

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SKU	Supplier No.	Size	Your price	Quantity
BHE18300011	EL-141-181	1X96 wells	$809.99		Add to Cart

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