Nasal Spray Bottle

Each Synthro Lab batch goes through HPLC and mass spectrometry analysis to confirm identity and purity — nothing ships until it clears our verification process.

Absolutely. Every product ships with a batch-specific COA that includes identity confirmation, purity data, and endotoxin results for full research traceability.

All peptides arrive as lyophilized powder in individually sealed vials, clearly labeled with the peptide name, lot number, and quantity.

We target ≥98% purity by HPLC across our entire catalog. The exact value for each batch is documented on the COA — no approximations.

Unopened vials should be kept sealed, away from light and humidity, and stored refrigerated or frozen per the guidelines listed on the COA.

Reconstituted peptides should be aliquoted and stored under refrigerated or frozen conditions to preserve stability and reduce the number of freeze–thaw cycles.

It depends on the peptide, but lyophilized vials stored correctly are stable long-term. Check the COA for batch-specific stability and expiry information.