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Home / ELISA Kit / PharmaTest ELISA Kits

Etanercept (Enbrel) Pharmacokinetic ELISA

SKU : BHE18300004

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Mfr.No.	EL-1611-051
Detection Range	50ng/ml - 1.56ng/ml
Reactivity	Human, Mouse, Rat
Assay Duration	2.5 hours
Assay Type	Direct, Sandwich
Description	Etanercept (trade name Enbrel ) is a protein drug used to treat autoimmune diseases by adsorbing tumor necrosis factor (TNF; a soluble inflammatory cytokine). Etanercept is a fusion protein produced through expression of recombinant DNA by linking the extracellular ligand-binding portion of TNFRSF1B to the Fc component of human immunoglobulin G1 (IgG1). It reduces the effect of naturally present TNF, functioning as a decoy receptor that binds to TNF. Etanercept is indicated for the treatment of moderate to severe rheumatoid arthritis (RA), psoriatic arthritis, ankylosing spondylitis, and moderately to severely active polyarticular juvenile idiopathic arthritis. Serum concentration of Enbrel may predict some clinical outcome during maintenance therapy. 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 20mL concentrate to 180mL ultra-pure water). Mix well. 2. Detection Reagent (1X) Preparation: Dilute detection reagent with assay buffer 1/1000 before use (for example add 11ul concentrate to 11ml of assay buffer). Mix well. 3. Preparation of Calibrators: Prepare calibrators with concentrations ranging from 2500 ng/mL to 78 ng/mL. The following is an example calibrator curve. Results calculation 1. Construct a standard curve by plotting the absorbance obtained from each standard against concentration. Use a 4 or 5 parameter curve fit. Alteatively a log-log curve fit may be used. 2. The concentration of the unknowns can be read directly from this standard curve using the absorbance value for each sample. 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 calibrators and test samples 1/50 with assay buffer (for example add 5uL of prepared calibrator or sample to 245uL of assay buffer). Mix well. Do not store diluted samples.
Detection Method	Peroxidase / OD450
Kit Components	Coated microtiter plate, 96 wells Calibrator diluent. - 1.8ml Calibrator 12ul 10X wash buffer - 25ml Assay buffer - 50ml 1000X detection reagent - 17ul TMB - 12ml TMB stop solution - 12ml Plate sealers - 3
Limit Of Detection	1.5ng/ml
Components	Coated microtiter plate, 96 wells Calibrator diluent. - 1.8ml Calibrator 12ul 10X wash buffer - 25ml Assay buffer - 50ml 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 Etanercept in biological matrices
Protocol	The Etanercept ELISA kit is designed to measure free Etanercept with high specificity and sensitivity . This assay employs the sandwich enzyme immunoassay technique. A precoated anti-Etanercept 96 well plate is provided. Calibrator, quality control samples and test samples are pipetted into the appropriate wells. Etanercept present in biological matrices is bound by the immobilized capture antibody. After washing away any unbound substances, enzyme linked detection antibody is added to the wells. 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 Etanercept present in test samples and the concentration is calculated from the standard series.

Gene ID	7124

Applications	ELISA

Storage	-20C, 1 year

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SKU	Supplier No.	Size	Your price	Quantity
BHE18300004	EL-1611-051	1X96 wells	$809.99		Add to Cart

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