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A: CST does not routinely test antibodies for fluorescent western blotting, though many work well in this application. Performing a fluorescent western blot using CST antibodies requires a modified immunoblotting protocol. Full details can be found in our Western Blotting Protocol (Fluorescent).
A: When stored under the recommended conditions, CST products can be expected to perform at optimal levels during the specified shelf-life period.
The product you receive will have one of two dates listed on its packaging. If the date is preceded by “Ref:”, then it is a “Reference Date”. This date indicates the date (month and year) that the product was filled or packaged. For single component products such as individual antibodies, the starting point for the expected shelf-life is indicated by the reference date printed on the vial label. For multi-component kit products the reference date printed on the barcoded kit box label indicates the starting point for the expected shelf-life.
If the date is preceded by “Best:”, then it is a “Best By” date. This date indicates the end point of the shelf life of the product. Please expect the product to perform at optimal levels until this date, as long as it is stored under the recommended conditions. View our list of shelf-life information by product type.