Question 1

Are PSL Labs peptides for human consumption?

Accepted Answer

No. PSL Labs products—including Retatrutide—are sold strictly for laboratory and research use only. They are not intended for human or animal consumption, diagnosis, treatment, cure, or prevention of any disease.

Question 2

What is Retatrutide?

Accepted Answer

Retatrutide is a research peptide supplied in lyophilized form for in vitro and laboratory research applications. Batch-specific laboratory documentation is published for selected lots when available.

Question 3

How do you verify purity?

Accepted Answer

Testing scope and results are shown on each original laboratory report.

Question 4

Where can I find my Certificate of Analysis?

Accepted Answer

When a laboratory report is published for your lot, it appears on the product page, in COA / Batch Lookup, and in our Testing section. Match the lot number on your vial label to the corresponding report. If your lot is not yet listed, contact support@psllabs.org.

Question 5

How should I store research peptides?

Accepted Answer

Store lyophilized peptides refrigerated or frozen per the product documentation. Reconstituted material should be handled according to your laboratory protocol and stored at recommended temperatures. Avoid repeated freeze-thaw cycles.

Question 6

How does shipping work?

Accepted Answer

We ship within the United States. Orders dispatch within 1–2 business days with tracked delivery. Peptides are packed for stability in transit using temperature-aware materials.

Question 7

What is your return policy?

Accepted Answer

Order issues such as transit damage, incorrect items, or documentation mismatches are reviewed case-by-case. Email support@psllabs.org with your order number and photos. See our Returns page for full details.

Question 8

What payment methods do you accept?

Accepted Answer

Checkout is processed via Bitcoin through BTCPay Server. You will receive order confirmation and tracking once payment is confirmed.

Researcher Verification

Common questions.