Modeling Multiple Drinking Sessions
Urinary EtG from one night can still be on the curve when the next session starts. This page logs each drinking block separately and overlays the remaining metabolite instead of resetting to zero. That is the difference from the single-session EtG Alcohol Calculator. Worked examples: ETG after multiple drinking sessions.
How Stacking Affects Detection Windows
Combined estimates are compared with the same 100, 300, and 500 ng/mL cutoffs as the standard tool. Later drinks while EtG is still elevated raise the combined peak in the teaching model. It is a stacked decay overlay, not a lab simulation or court exhibit.
Frequently Asked Questions
Is stacked ETG linear?
The model sums remaining decay curves — a teaching approximation, not a certified lab simulation.
How many sessions can I add?
Add as many as needed. Each session contributes its own peak and decay to the combined chart.
Does order of sessions matter?
Yes — later drinking while ETG is still elevated produces a higher combined peak than the same drinks spaced further apart.
When should I log separate ETG sessions?
Whenever drinking happened on different days or with a gap long enough that leftover ETG might overlap a new peak.
Can I model a whole weekend?
Yes — add Friday, Saturday, and Sunday as separate sessions with their own drink counts and times.
Does the advanced tool use the same cutoffs?
Yes. Compare combined estimates with 100, 300, and 500 ng/mL just as on the single-session calculator.
Why is my combined peak higher than one night?
New drinks while ETG is still elevated stack on the remaining metabolite in the teaching model.
Is this accurate enough for court?
No. It is an educational stack of decay curves, not expert testimony or a lab simulation.
Can I delete a session if I entered it wrong?
Remove or edit the extra session and recalculate so the chart reflects only the pattern you meant to model.