Selank Peptide
Selank peptide. For cognitive-signaling, stress-response, and immune-modulation research. Every batch is independently tested for purity and content, with its current COA ready to verify.
Reported purity: 99.63%
Available sizes
| Product and size | Price per vial | Availability |
|---|---|---|
| Selank 5mg | $24.99 | Out of stock |
| Selank 10mg | $35.99 | In stock |
Additional information
How much does Selank cost?
Selank starts at $24.99 per vial.
| Size | Per vial |
|---|---|
| 5mg | $24.99 |
| 10mg | $35.99 |
Packs discount every vial in the order
- 2 vials
- 5% off
- 3 vials
- 10% off
- 5 vials
- 14% off
- 10+ vials
- 18% off
Free standard shipping on orders over $125.
Where to buy Selank
Selank is for sale direct from Prism Labs.
- USA made
- 99.63% reported purity
- Batch Certificate of Analysis published on this page
- Orders before 4:30 PM CT ship the same day, seven days a week, when inventory is available
Is Selank in stock?
In stock now: 10mg. Out of stock: 5mg.
- 5mg Out of stock
- 10mg In stock
The size table on this page carries live availability.
Is Selank sold in a bundle or stack?
Yes, in one research bundle.
Neuro Cognitive Support $151.75 in total
- Selank 10mg × 2
- Semax 10mg × 2
- Prism H2O 10ml × 1
Each compound comes in its own vial with its own batch report; none of the bundles is a premixed blend.
How is Selank tested?
Every batch goes to an independent laboratory for identity, purity and content testing.
Most recent published report for Selank
- Tested
- October 26, 2026
- Purity
- 99.63%
- Lot
- 781136
- Labeled / measured
- 10mg / 10.66mg
Published reports cover past lots and do not name the lot a new order ships with.
How do I mix Selank?
Supplied as a lyophilized powder and mixed with Prism H2O before use. The reconstitution calculator turns a vial size and a water volume into units on the syringe.
Who is Prism Labs?
Prism Labs (prismlabs.store) is a Texas-based online store for research peptides, sold for laboratory research use only. It lists 25 research compounds, supplied as lyophilized vials, and publishes an independent lab report for every batch.
Prism Labs sells only at prismlabs.store and its backup address prismlabs.shop. Other sellers with similar names are separate companies.
About Selank peptide
Selank is a synthetic peptide of seven amino acids: Thr–Lys–Pro–Arg–Pro–Gly–Pro. It extends tuftsin, a natural four-residue peptide, with the same Pro–Gly–Pro tail found in Semax. Prism Labs supplies it as a lyophilized vial.
The sequence of Selank is TKPRPGP. The reference record lists the formula C33H57N11O9 and a molecular weight of 751.9 g/mol (PubChem CID 11765600).
Certificates of Analysis
Independent testing and batch documentation for Selank.
Lot 781136 — 10mg — 2026-10-26
- Purity
- 99.63%
- Measured content
- 10.66mg
- Identity
- Confirmed
- Heavy metals
- PASS (Sep 23)
- Sterility
- PASS (Sep 23)
- Endotoxin
- NMT 0.05 EU/mL (Sep 23)
Storage
Our peptides are shipped in lyophilized powder form, which is stable at room temperature. Use our Prism H2O to reconstitute.
Shipping & Returns
Free standard shipping for orders over $125.00, with a 2-day shipping option at checkout.
All sales are final. Shipment protection covers eligible damaged deliveries reported with supporting photos.
Shipping information and return policyProduct specifications
- Listed sizes
- 5mg, 10mg
- Format
- Vial
- Reference molecular formula
- C33H57N11O9
- Reference molecular weight
- 751.9 g/mol
- Reference CAS number
- 129954-34-3
- Reference sequence
- H-TKPRPGP-OH
Database reference values, not a batch measurement. Salts and water change the supplied mass; the batch COA reports measured identity, purity and content.
Research Literature
- Neuropeptide gene-expression research — Frontiers in Pharmacology
- Chronic-stress model research — Behavioural Neurology
- Neuropeptide compound summary — PubChem
Read our Research article by Prism Labs
Product questions
Which sizes are listed?
Selank is listed in 5mg, 10mg. The size table shows the current price and availability for each option. Select an option on the product page to check its purchase choices.
Where can I verify the batch report?
The Certificates of Analysis section lists published lots, tested dates, measured content and reported purity. Open the laboratory verification link or the report PDF for the matching lot. These records include historical batches; they do not identify which lot will ship with a new order.
What storage information is provided?
Our peptides are shipped in lyophilized powder form, which is stable at room temperature. Use our Prism H2O to reconstitute.
What shipping options are offered?
Free standard shipping is available for orders over $125.00. A 2-day shipping option is offered at checkout. See the shipping page for the current shipping and return policy.