Level Up Peptides Coupon Code: PROFPEPTIDE — Save 15%
Use discount code PROFPEPTIDE at Level Up Peptides to save 15% on your order. Prof. Peptide verifies this code directly with the vendor and updates it when it changes.
Key facts
- Catalog
- 36 products by the vendor’s own count, all in a single category of its own naming, three of them water; every listing carries its strength in the product name, and each product page publishes CAS number, molecular formula and molecular weight
- Third-party testing
- Freedom Diagnostics & ILS Laboratories
- Certificates of analysis
- Public certificate library on the vendor’s own domain, open without an account, each product linking its certificate PDF directly; certificates also carry a search code that resolves on Freedom Diagnostics’ own index
- Prof. Peptide’s discount
- 15% off with code PROFPEPTIDE
Level Up Peptides (level-up-peptides.com) is a US-based research-compound supplier listing 36 products, all of them in stock: single peptides and blends in vials, plus bacteriostatic water in three sizes. Three of its GLP compounds are sold under coded names; the decodes below are set out with their evidence after the list. Among them:
- Metabolic & GLP-1
- Retatrutide (LU-RT3) in 10, 20 and 30 mg, Tirzepatide (LU-TZ2) in 10, 20 and 30 mg, Semaglutide (LU-SG1), Cagrilintide, AOD-9604, 5-Amino-1MQ, MOTS-C, L-Carnitine
- Recovery & Tissue Repair
- BPC-157, TB-500, Wolverine Stack, KLOW
- Growth Hormone
- GH Stack, Ipamorelin on its own, Tesamorelin (listed as Tesa)
- Skin Health & Anti-Aging
- GHK-Cu in 50 and 100 mg, GLOW, Melanotan II
- Gut Health & Immunity
- KPV, Thymosin Alpha-1
- Sleep & Recovery
- DSIP
- Longevity
- Epithalon, NAD+, Glutathione, MTP-31
- Sexual Health
- Kisspeptin
- Also listed
- Bacteriostatic water in 3, 10 and 30 mL
A signed-out visitor meets a sign-in screen rather than the shop. Request any page of the storefront without an account — the front page, the shop index, the peptides category, a product page, even the XML sitemap — and what comes back is a “Login Required” screen with log-in and create-account tabs. Nothing of the catalog renders behind it. Registration is free, and it gates browsing rather than purchasing alone.
That screen is not the whole story, which is why this page carries a catalog where it once carried none and said the account wall was the reason. The storefront runs on WooCommerce, and the store’s own product data answers without an account: the list above — names, vial sizes and stock — is read from it, not assembled from elsewhere. The certificate index page is gated like the rest of the storefront, but the certificate files themselves are served openly: the Retatrutide report linked below was downloaded and read without signing in. What the earlier version of this page had wrong was not the sign-in screen, which is real, but the conclusion drawn from it: that nothing about the catalog could be verified. A gate on a vendor’s pages is not a gate on the data behind them.
Three products are named by code, and the three decodes do not rest on the same evidence. LU-RT3 is Retatrutide, and that one is read off a certificate: the identity row of Level Up’s own report for lot LU-R3102.28.2026 names Retatrutide and confirms it, and the product’s own specification block gives CAS 2381089-83-2 and formula C221H342N42O68, which are Retatrutide’s. LU-TZ2 is Tirzepatide from that same specification block, which gives CAS 2023788-19-2; no certificate for that line has been read here. LU-SG1 is Semaglutide, and its listing publishes no CAS number at all. That mapping is confirmed to us first-hand rather than read off a certificate. One further product, MTP-31, is left as the store lists it, because nothing published about it decodes the name.
What earns Level Up a page is its testing record, which is the deepest of any vendor on this site. Level Up publishes certificates from two laboratories, Freedom Diagnostics and ILS Laboratories. The Freedom Diagnostics certificate we reviewed — lot LU-LC10.A, reported August 24, 2026 — goes well past the purity-and-identity core that most research-market certificates stop at. It reports purity at 99.85% by HPLC-UV, identity by LC-MS, and measured net peptide content; then it adds three panels almost nobody else in this market runs.
Bacterial endotoxin is tested to USP <85> and run in duplicate, with both determinations at or below 0.05 EU/mL. Microbial contamination is screened by PCR, which reported no detectable microbial DNA. Elemental impurities are measured by ICP-MS across arsenic, cadmium, lead and mercury. Those three panels answer what is in the vial besides the peptide — a different question from purity, and the one a purity figure alone cannot speak to.
No certificate count is given here. The figure this page used to carry counted the codes sharing the 4-character prefix “Leve” on Freedom Diagnostics’ shared index, and sampling that prefix returned two different client names — so the codes under it are not all this vendor’s, and the submission-date range derived from the same arithmetic is gone with it. Freedom Diagnostics prints no laboratory accreditation on these certificates, so none is claimed here.
The ILS Laboratories report for the Retatrutide line runs the same shape of panel and is the one linked above. On lot LU-R3102.28.2026, analysed June 22, 2026, it gives purity at 99.13% by HPLC against a 95% specification, net peptide content 10.3 mg against a 10 mg label, identity confirmed by chromatographic comparison with a reference standard, a fentanyl immunoassay screen at a 50 ng/mL cutoff reading not detected, arsenic, cadmium, chromium, mercury and lead all not detected by ICP-MS, sterility by PCR showing no growth, and endotoxin reported at or below 0.05 EU/mL. The certificate names a lab director and prints an access code, and that code checks out: on 2026-09-21 we entered JCR63Q8Z into ILS Laboratories’ own verification form and it returned the matching certificate. The check runs against the laboratory’s records, not against a file the vendor hosts.
Level Up Peptides is US-based. All products are sold for laboratory and research use only.
Level Up Peptides affiliate program
Level Up Peptides runs an affiliate program. Its terms below are from the vendor’s affiliate portal, read October 14, 2026.
- Commission
- 15%
- Minimum payout
- $100
Apply to the Level Up Peptides affiliate program on the vendor's own sign-up page.
Prof. Peptide checked Trustpilot and Finnrick on 30 September 2026.
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