ELISA Rat - SOD2/Mn-SOD

ELISA is the most commonly used method of detecting and quantifying the concentration of an antigen in an unknown sample. During the experiment, If you get a weak signal, then make sure reagents are at room temperature before starting the assay. Try increasing incubation times to ensure maximal antibody binding and amplify the signal. Secondly, if you get values above 0 in the negative control indicates a high background signal. Try to consider reducing your antibody concentration and prevent non-specific binding of antibodies by using affinity-purified antibody and suitable blocking buffers. To avoid high well to well variation, do not stack plates during incubation, no bubbles in the plate and wash wells thoroughly to avoid variation.

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Upstream tips
Bring all reagents to room temperature (18-25°C) before use for 30min.
-Prepare fresh standard for each assay. Use within 4 hours and discard after use.
-Centrifuge the sample again after thawing before the assay.
Protocol tips
- To ensure accurate results, proper adhesion of plate sealers during incubation steps is necessary. Do not allow wells to sit uncovered for extended periods between incubation steps.
-Once reagents have been
added to the well strips, DO NOT let the strips DRY at any time during the assay.
-TMB Substrate should remain colorless or light blue until added to the plate. Please protect it from light.
-Stop Solution should be added to the plate in the same order as the TMB Substrate.
Upstream tips
-The entire kit may be stored at -20°C for up to 1 year from the date of shipment.
-Avoid repeated freeze-thaw cycles.
-The kit may be stored at 4°C for up to 6 months.
-Bring all reagents and samples to room temperature (18 - 25ºC) before use.
Protocol tips
-Levels of Dkk-1 may vary between different samples.
Optimal dilution factors
for each sample must be determined by the investigator.
-A standard curve must be run with each assay.
-Keep substrate solution protected from light.
-Read immediately after adding STOP solution.
Downstream tips
-Store your standard at <-70ºC after reconstitution, others at 4ºC.
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