Steady state & SS%

Educational explainer — not medical advice. This page describes the math StaQ uses to draw your chart. Talk to your prescriber before changing anything about your regimen.

The idea

Weekly medications don't leave your body in a week. Each dose is still partly active when the next one arrives, so the doses stack — a little higher each week — until the amount you add equals the amount your body clears. That plateau is steady state: the level your regimen settles at when you dose consistently.

It's why the first weeks on a new dose can feel different from month two on the same dose, and why a single dose number never tells the whole story. What your body experiences is the accumulated level, not the syringe number.

What SS% measures

SS% is how far along that climb you are. 50% means you're halfway to the plateau; 100% means new doses are mostly replacing what your body clears. The pace is set by your medication's half-life — as a rule of thumb, levels reach about 97% of steady state after five half-lives of consistent dosing.

On your chart

The Today screen shows this as a status line — "Reaching steady state in ~N days," then "At steady state · reached N days ago." On the exposure chart, the shaded steady-state band marks the plateau range your current dose is heading toward, with the dashed line forecasting the path between here and there.

Change your dose and the climb starts toward a new plateau — which is why your days-to-steady-state countdown resets after a titration.