Every Signa cartridge is tested before it reaches your pen. This page sets out exactly what's checked, who checks it, and how the certificate ends up in your account — no vague "lab tested" claim without the paperwork behind it.
Each filled batch is filtered and incubated against bacterial and fungal growth. Any detection fails the batch outright.
Checks for pyrogenic endotoxins against standard safety limits — the same assay type used across injectable manufacturing.
Confirms the peptide actually matches its reference standard — not just something that elutes at a similar time.
Chromatographic purity is checked against a reference standard. Anything under our threshold doesn't reach a cartridge.
Checks for lead, mercury, cadmium and arsenic against standard safety limits.
Every shipment is temperature-logged end to end. Anything that leaves range gets reshipped, not sent anyway.
We work with the same calibre of EU-based suppliers trusted across the peptide research industry — not the cheapest listing we could find.
Raw peptide is sourced from established suppliers who provide their own certificate of analysis with every shipment — treated as a starting point, not the final word.
A laboratory independent from manufacturing runs the full test panel above on every batch before we accept it.
Results are reviewed against our purity and safety thresholds before a batch clears. Borderline results get re-tested, not waved through.
Cleared batches are filled into cartridges at the exact amount your protocol specifies before dispatch.
Insulated, temperature-logged packaging keeps cartridges in range for the entire journey to your door.
The Certificate of Analysis for your specific batch is added to your account as soon as it clears. The batch number on your cartridge matches the certificate.
Your Certificate of Analysis lands in your account the moment a batch clears. The batch number on your cartridge matches the certificate — full traceability, whenever you want to check it.
Illustrative example only — not a real batch record. Your actual certificate appears in your account once your protocol ships.
Free 15-minute call — no obligation, no consultation fee required just to ask a question.