10 October 2019 3 4K Report

As far as I know, IDO1 is expressed inside the cells (ie not a secreted protein). I am afraid that serum/plasma is not a suitable sample type or the level of IDO1 may be too low to be detected in serum/plasma.

Yet i am wondering if there is any extraction method available for measuring the expression of IDO1 in serum? Currently I am using an ELISA kit to measure the expression of IDO1 in cells. Any pre-Elisa steps for Serum to check the IDO1?

Note: I don't want to check serum IDO activity for example; Kynurenine/Tryptophan ratio.

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