If Serum concentration is retargeted or is expanded into a separate article, template, or other project page, this redirect will be recategorized to be updated.
To a related topic: This is a redirect to an article about a similar topic.
Redirects from related topics are different than redirects from related words, because a related topic is more likely to warrant a full and detailed description in the target article. If this redirect's subject is notable, then also tag it with {{R with possibilities}} and {{R printworthy}}.
When appropriate, protection levels are automatically sensed, described and categorized.