How long does it last? Using the Shelf Life Estimator
The Shelf Life Estimator answers one question: “How long does this compound stay viable in the form and storage condition I’m using?” Three inputs — compound, state (lyophilized vs. reconstituted), and storage temperature — return a range in months or days, a stability rating, and a per-compound tip.
Step 1 — Pick the compound
The dropdown lists every compound we ship plus a few we don’t (Tirzepatide, Tesamorelin, etc.) for reference. Each compound has typical stability windows in the lookup table, and three of them (Retatrutide, Semaglutide, Tirzepatide) have overrides — GLP-1 analogs degrade faster than other peptides when reconstituted, so their estimates are shorter than the generic case.
Step 2 — Pick the state
- Lyophilized (powder) — the form vials ship in. Most stable. Years at the right temperature.
- Reconstituted (solution) — after you’ve added BAC water. Much shorter shelf life; weeks instead of months.
Step 3 — Pick the storage temperature
- Frozen −20°C — freezer storage. Best for lyophilized long-term or reconstituted intermediate-term. Avoid freeze-thaw cycles on reconstituted product; that’s what kills potency.
- Refrigerated 2–8°C — standard fridge. Default for reconstituted compounds in active use.
- Room temperature 20–25°C — only acceptable for short windows. Use this view to know how fast something degrades if it sits on the bench overnight.
Read the output
- Estimated life — the headline range, in months (or days if under 30 days).
- Rating — EXCELLENT / STABLE / MODERATE / POOR — color-coded badges (green / blue / amber / red).
- Percent stable — rough estimate of expected potency retention at the END of the window. 95% = essentially full potency. 15% = effectively dead.
- Tip card — a one-liner with the most common gotcha for that specific combination (“avoid freeze-thaw cycles”, “light-protected”, etc.).
Quick reference (lyophilized)
- Frozen −20°C → 36–60 months · EXCELLENT
- Refrigerated 2–8°C → 12–24 months · STABLE
- Room temp → 3–6 months · MODERATE
Quick reference (reconstituted)
- Frozen −20°C → 3–6 months · STABLE (avoid freeze-thaw)
- Refrigerated 2–8°C → 1–2 months · MODERATE (4–8 weeks typical)
- Room temp → 0–7 days · POOR (use within days)
GLP-1 analogs (Retatrutide, Semaglutide, Tirzepatide) cut the reconstituted-fridge window down to ~4–6 weeks instead of 8 — the estimator handles this automatically when those compounds are selected.
Open the Shelf Life Estimator →
Research use only. Estimates are typical ranges, not guarantees of stability. Verify against your compound’s per-lot Certificate of Analysis for specific batch claims.