What DAO activity measures
DAO activity gives practical context for how well extracellular histamine may be cleared. It is not the entire histamine story, but it is one of the most direct clearance-oriented follow-up markers.
Why this marker matters
When DAO, AOC1, or histamine-clearance pathways look relevant, DAO activity helps turn a genetic hypothesis into something you can actually validate.
When to check it
- when histamine-like symptoms cluster around meals
- when DAO or AOC1 genes look relevant
- when you want a clearance-focused marker instead of only symptom labels
How to interpret it
- use it with symptom and trigger tracking
- interpret it alongside broader histamine and gut context
- do not treat one value as a standalone diagnosis
Where it fits in DNA follow-up
DAO activity is one of the most practical validation markers for the histamine-clearance pathway.
Example interpretation
Your histamine-clearance pathway may deserve follow-up because DAO activity can show whether clearance support is actually weaker in practice.
Suggested companion markers: plasma histamine and trigger tracking.