Tocilizumab Kit ELISA

N° du produit ABIN4886398

Détail du produit Tocilizumab Kit ELISA

Antigène: Tocilizumab

Reactivité: Humain, Souris, Rat

Méthode de détection: Colorimetric

Type de méthode: Sandwich ELISA

Gamme de detection: 1.56-50 ng/mL

Seuil minimal de détection: 1.56 ng/mL

Application: ELISA

Fonction: Quantification of Tocilizumab in biological matrices

Type d'échantillon: Plasma, Serum

Analytical Method: Quantitative

Specificité: Tocilizumab (Actemra)

Réactivité croisée (Details): hIgG1, Rituximab, and Infliximab prepared at 250 ng/mL were assayed and exhibited no cross-reactivity or interference.

Sensibilité: 1.5 ng/mL

Ingrédients: 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

Matériel non inclus: Precision pipettes calibrated to deliver 5-1000μL
Multi-channel pipette calibrated to deliver 50-200μL
Plate shaker
Disposable tips
Vortex-Mixer
Distilled or de-ionized water
Microplate reader capable of reading 450nm with background subtrac

Information d'application

Indications d'application: Optimal working dilution should be determined by the investigator.

Volume d'échantillon: 15 μL

Durée du test: 2.5 h

Plaque: Pre-coated

Protocole: The Tocilizumab ELISA kit is designed to measure free Tocilizumab with high specificity and sensitivity . This assay employs the sandwich enzyme immunoassay technique. A precoated anti-Tocilizumab 96 well plate is provided. Calibrator, quality control samples and test samples are pipetted into the appropriate wells. Tocilizumab 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 Trastuzumab present in test samples and the concentration is calculated from the standard series.

Préparation des réactifs:

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 20 mL concentrate to 180 mL ultra-pure water). Mix well. 2. Detection Reagent (1X) Preparation: Dilute detection reagent with assay buffer 1/1000 before use (for example add 11 μL concentrate to 11 mL of assay buffer). Mix well. 3. Preparation of Calibrators: Prepare calibrators with concentrations ranging from 2,500 ng/mL to 78 ng/mL. The following is an example calibrator curve.

Prélèvement de l'échantillon: 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.

Préparation de l'échantillon:

Dilute calibrators and test samples 1/50 with assay buffer (for example add 5μL of prepared calibrator or sample to 245μL of assay buffer). Mix well. Do not store diluted samples.

Procédure de l'essai:

This assay employs the sandwich enzyme immunoassay technique. Anti- Tocilizumab is coated onto a 96 well microplate. Calibrator and test samples are pipetted into the appropriate wells. Tocilizumab present in biological matrices is bound by the immobilized anti- Tocilizumab antibody. After washing away any unbound substances, enzyme linked antiTocilizumab antibody is added to the wells. This antibody is developed and purified specifically against Actemra® (domain residing in Fc portion of the Actemra® molecule). 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 Tocilizumab present in test samples. The color development is stopped and the intensity of the color is measured

Calcul des résultats:

1. Construct a standard curve by plotting the absorbance obtained from each standard against concentration. Use a 4 or 5 parameter curve fit. Alternatively 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 calibrator diluent and retested. If the samples have been diluted, the concentration determined from the standard curve must be multiplied by the dilution factor.

Précision du teste: Precision: Precision was determined by analyzing 6 replicates of serum spiked with 500ng/mL Tocilizumab on 6 different occasions. Intra-assay coefficient of variation (CV) < 1 0%. Inter-assay CV < 10%.

Recovery: 250 ng/mL of Tocilizumab was spiked in 10 lots of human serum. Recovery ranges are from 88-112% with an average recovery of 104%.

Restrictions: For Research Use only

Stockage

Agent conservateur: Without preservative

Précaution d'utilisation: Read manual completely before beginning

Stock: -20 °C

Stockage commentaire: Store kit components at -20°C unless specified otherwise. DO NOT USE past kit expiration date. Some vials contain a small amount of reagents. Spin tubes on pulse setting prior to opening.

Date de péremption: 12 months

Détail du antigène

Antigène: Tocilizumab

Sujet: Tocilizumab (Actemra®) is an immunosuppressive humanized monoclonal antibody drug, mainly for the treatment of rheumatoid arthritis (RA) and systemic juvenile idiopathic arthritis, a severe form of arthritis in children. Tocilizumab binds the interleukin-6 receptor (IL-6R) thus blocking the signaling caused by interleukin 6 (IL-6). IL-6 is a cytokine that plays an important role in immune response and is implicated in the pathogenesis of many diseases.

ID gène: 3570