ELISA Rat - OPN

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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Mouse/Rat Osteopontin (OPN) Quantikine ELISA Kit

R&D Systems

Upstream tips	Protocol tips	Downstream tips
-Store the unopened kit at 2-8 °C. -Bring all reagents to room temperature before use. -Reconstitute the Human Cytochrome c Standard with deionized or distilled water. Allow the standard to sit for a minimum of 15 minutes with gentle agitation prior to making dilutions.	-When mixing or reconstituting protein solutions, always avoid foaming. -Substrate Solution should remain colorless until added to the plate. -Keep Substrate solution protected from light. -Stop Solution should be added to the plate in the same order as the Substrate Solution. -Wells that are green in color indicate that the Stop Solution has not mixed thoroughly with the Substrate Solution.

Upstream tips
-Store the unopened kit at 2-8 °C. -Bring all reagents to room temperature before use. -Reconstitute the Human Cytochrome c Standard with deionized or distilled water. Allow the standard to sit for a minimum of 15 minutes with gentle agitation prior to making dilutions.
Protocol tips
-When mixing or reconstituting protein solutions, always avoid foaming. -Substrate Solution should remain colorless until added to the plate. -Keep Substrate solution protected from light. -Stop Solution should be added to the plate in the same order as the Substrate Solution. -Wells that are green in color indicate that the Stop Solution has not mixed thoroughly with the Substrate Solution.

Manufacturer protocol Publication protocol 1 Relevant paper

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