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May I use heat-treated milk samples? ( 4 July 2013 )

Yes – low heat treatment will not affect assay results.

How long may milk and plasma/serum samples be stored, and in what conditions? Can samples be frozen? ( )

This will depend on how the samples have been stored.  If samples are stored at 4°C, they should not be kept any longer than 2 days. You may conserve samples at -20ºC for long-term storage (for up to about 5 years), but be sure that recipients are well sealed to avoid evaporation. Avoid repeated freezing/thawing cycles (preferably no more than three).

Is it okay to use ID Screen® milk ELISAs with samples containing preservatives? ( )

Yes. Milk samples containing preservatives, such as Bronopol and sodium azide, may be used.