Blue Sky Peptides lab testing and COAs

How Blue Sky Peptides lab testing measures purity

Purity is measured by high-performance liquid chromatography (HPLC). The method pushes a dissolved sample through a packed column, and each component comes out at a different time. A UV detector measures how much of the total is the target peptide. If the result is 99.5%, then 99.5% of what the detector saw was the peptide itself.

Identity is confirmed by mass spectrometry, which weighs the molecules in the sample. If the mass matches the expected molecular weight, the peptide is the one on the label.

Real figures, not rounded ones

Each product page shows the purity measured for the batch in stock. Here are some current results:

• TB-500 (Thymosin Beta-4) 5mg: 99.92%
• Tesamorelin 5mg: 99.91%
• BPC-157 5mg: 99.79%
• GHK-Cu 50mg Copper Peptide: 99.96%
• Retatrutide 20mg (Reta): 99.66%
• GHRP-2 5mg: 98.07%
• Epithalon 10mg: 93.13%

Most of the range sits above 99% in Blue Sky Peptides lab testing. A few compounds came in lower, and we print those figures too, because a COA that doesn’t match the page would be worse than an honest number.

What a Blue Sky Peptides COA shows

The certificate of analysis is the batch record for what’s in your vial. It names the compound, carries the same batch number as your label, and gives the purity result for that batch. That figure is the one most labs want for their records.

How to get the COA for your vial

Find the batch number printed on the vial or bottle label. Email it to sales@blueskypeptideus.com with the product name, and we’ll send the certificate for that batch at no charge. Filing COAs by batch means the paperwork always matches the vial in your hand.

Blends, bundles and liquids

A blend such as the BPC-157 TB-500 blend holds more than one peptide, so its page shows the ratio as well as the total. Bundles are separate vials, each with its own batch number. The research liquids are tested the same way and labeled with the concentration per mL.

Storage keeps the result valid

Blue Sky Peptides lab testing tells you what left us. A purity figure only holds if the vial is stored well. Keep sealed vials in the freezer for long storage, or the fridge for short periods, away from light. After mixing, keep them cold and use them within about 28 days. Liquids keep at room temperature with the cap closed.

Blue Sky Peptides lab testing FAQ

Blue Sky Peptide products are sold for laboratory research use only. They aren’t for human or veterinary use and haven’t been evaluated by the FDA.