ELISA setup;negative controls have higher OD than positive ones
I would be so thankful if you share your personal experience about such a problem if you have had faced ever!
I do run an ELISA set up,to detect Ab raised in mice serum after a vaccine model administration.The protein antigen which has been injected to mice,the same one,has been coated and serums were added to mesure specific IgG against.But the point is that the serums of mice which are non-immunized,show higher OD than the test ones.It's nothworthy to mention that other immunoassay have confirmed the immune induction ability of administrated vaccine,and more over,this test had been set up months ago and it worked well.But now,it doesn't work :frusty: I have also checked these serums in another ELISA run which an irrelevant Ag had been coated!!! That just drove me crazy when I found the same result in an ELISA run utilizing an irrelevant antigen!
I'm just seeking for an advice to check out how can I solve this problem
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