Now (and only now) intervene with Grade A or B.

Powered by the Biomarker A measurable sign in the body, such as a blood test value, used to track a condition or the effect of a treatment. Performance Tracker · 28 biomarkers across 7 systems

Guideline clinical lab ranges against evidence-informed reference thresholds, each labeled by the kind of evidence behind it, organized by system, with retest cadence built in. A baseline against these targets comes before any expensive longitudinal testing subscription. This is Step 04, and the data that gives Step 05 something to compare to.