Lyophilization (freeze-drying) is the gold standard for preserving peptides long-term. The peptide is dissolved in water, frozen, then placed in a vacuum to remove the water as vapor, leaving a stable dry powder.
This process preserves potency for 1–2 years at refrigerator temperatures, or longer when frozen. It is far more stable than liquid (pre-reconstituted) peptides, which degrade much faster.
| Marker | Good Sign | Red Flag |
|---|---|---|
| Color | White to off-white, uniform powder | Yellow, brown, or discolored |
| Texture | Fine, fluffy, easily dissolves | Clumped, crystalline, or oily |
| Smell | Essentially odorless | Strong chemical or solvent odor |
| Solubility | Dissolves clear in BAC water within 1–2 min | Cloudy solution, particles remaining |
| Packaging | Sealed vial, batch number labeled | Loose seal, no batch, no expiry |
| COA | Batch-specific, third-party lab, 98%+ purity | No COA, generic COA, in-house only |
Every visual check on this page is one you run yourself on arrival, which is easier when the vial has not spent two weeks in transit. Our partner and supplier ships from stock held locally. View the Primara Labs catalogue
F-01 · Recommended
F-02 · Use With Caution
Our partner and supplier
Primara Labs, our partner and supplier, dispatches batch-numbered vials from inventory already inside the Philippines, so there is no international leg and no customs hold between packing and inspection. Metro Manila is same day, the rest of the country one to three business days, 10% off every order.
View the Primara Labs catalogue