How to detect RAM memory going bad?

[BP25]

Hello everyone,
I'm planning to install Guix/Linux-libre with a CoW filesystem like 
BTRFS, hence the following question: how to detect ram memory going bad? 
It seems btrfs cannot help (how is it possible btrfs cannot help, even 
in case of files and metadata kept duplicated, each copy on a separate 
device?!). Can guix help, ideally with a test command to be run 
periodically? I found the check and system-check commands on Guix manual 
but they seem to refer only to post-installation scenarios...

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