LL-37 Peptide For Sale

What LL-37 Costs Right Now

WPA currently tracks LL-37 from 9 distinct vendors across 10 separate LL-37 listings. In-stock LL-37 vials run from $33.15 to $80.75 — a 2.4x spread for the same compound. Peptira holds the lowest sticker price at $33.15. Normalized to milligrams, LL-37 costs $4.45/mg to $14.25/mg on this page. The best per-milligram value is the 10mg vial from Ascension Peptides.

LL-37 is stocked in 2 sizes: 5mg and 10mg vials. Because vials of different strengths rarely scale linearly in price, the per-milligram column is the only fair way to rank them.

Ranked by true cost per milligram, the LL-37 listings WPA tracks are: Ascension Peptides — 10mg at $44.50 ($4.45/mg), COA purity 99.94%; Peptira — 5mg at $33.15 ($6.63/mg), COA purity 99.93%; EZ Peptides — 10mg at $70.20 ($7.02/mg), COA purity 99.50%; Ameano Peptides — 10mg at $72 ($7.20/mg), COA purity 99.50%; Paramount Peptides — 10mg at $80.75 ($8.07/mg), COA purity 99.08%.

LL-37 COA Coverage Across Tracked Vendors

9 of the 10 tracked LL-37 listings (90%) are marked as having COA availability in WPA's listing data; this marker is not independent verification. A purity value is recorded for 9 listings; purity alone does not establish identity or independent testing. The recorded purity values range from 99.08% to 99.94%. 8 listings record more LL-37 in the vial than the label claims; check the vendor's report and batch before drawing conclusions. The latest COA date recorded in WPA's listing data is 8/26.

To assess a COA, inspect the actual report for the independent lab, test date, and a batch and vial size matching the LL-37 offer. WPA's listing fields do not establish that a report was independently verified.

How Researchers Actually Dose LL-37

Across 85 LL-37 calculator runs logged by the WPA community, the most common dose entered is 200mcg, most often daily (7x/week). The size researchers calculate against most often is the 5mg vial (75 runs). The most common bacteriostatic water volume is 2mL, which is what sets the draw marks on the syringe for that dose. At that dose a 10mg vial yields roughly 50 doses, so the vial size you buy decides how often you reorder as much as the price does.

LL-37 Discount Codes

10 of the 10 tracked LL-37 listings carry a WPA researcher discount code. The largest live discount is 50% off. Every price and per-milligram figure on this page is the post-discount number, so you are never comparing a discounted listing against an undiscounted one. Codes change and some exclude sale items or carry order minimums.

About LL-37

LL-37 is a 37-residue human cathelicidin peptide — the body's only cathelicidin — most often sourced for antimicrobial, wound-healing, and immune research. It works as both a broad-spectrum antimicrobial and an immune-signaling molecule. It ships as a lyophilized powder you reconstitute with bacteriostatic water before use.

Its reported half-life is ~30–60 min, which is the main reason the community cadence above looks the way it does. Not FDA-approved.

How to Read the LL-37 Comparison

• Price per milligram — Every LL-37 listing is normalized to $4.45/mg-style unit pricing, so a small cheap vial cannot hide a worse real cost than a larger one.
• COA metadata and purity — 9 LL-37 listings are marked for COA availability, and 9 have a recorded purity value. These fields do not independently verify a report.
• Vials sizes — All 2 stocked LL-37 sizes (5mg and 10mg vials) sit in one table.
• Stock status — Live in-stock state for each LL-37 listing, refreshed on a recurring basis.

Frequently Asked Questions: LL-37

Is it legal and safe to buy LL-37 for research?

In the US, LL-37 is sold strictly as a research chemical — legal to buy for laboratory research but not approved for human use. It is a synthetic antimicrobial peptide with no approved human form, sold strictly for laboratory research. The real variable isn't legality, it's quality: unverified suppliers can ship underdosed, impure, or mislabeled material. WPA records COA-related listing fields where supplied, but does not independently verify every report. Inspect the actual batch report and its laboratory, identity testing, and date before drawing conclusions. Right now that screen covers 10 LL-37 listings from 9 vendors.

How do I verify a LL-37 COA so I'm not getting an underdosed vial?

A Certificate of Analysis (COA) may report tests for a specific LL-37 batch. Check that the report identifies the compound (actually LL-37, the full 37-residue cathelicidin peptide, not a truncated fragment), names the laboratory, describes the test method and result, and matches the offered batch and date. A recorded purity value or COA-availability flag in WPA's listing data is not independent verification. Open the vendor listing and inspect the actual report before drawing conclusions. For LL-37 specifically, 9 of 10 tracked listings (90%) are marked as having COA availability in WPA's listing data; that marker is not independent verification. A purity value is separately recorded for 9 listings; purity alone does not establish identity or independent testing. The latest COA date recorded in the listing data is 8/26.

Which LL-37 vendor should I pick?

There's no single "best" LL-37 vendor — it depends on what you weigh most. WPA ranks tracked listings using recorded purity and date fields where available, visitor click activity, price, stock status, and discount data; this ranking is not independent verification of a report. LL-37 is a long 37-residue peptide whose synthesis quality varies widely between sources, so weigh assayed purity and a recent COA heavily. 9 vendors currently carry LL-37, and Ascension Peptides holds the best true value at $4.45/mg on the 10mg vial. Review the actual report and confirm its batch details before making a decision.

How much does LL-37 cost — and how do I know I'm not overpaying?

Judge LL-37 by true price per milligram, not the sticker price on one vial — a cheap small vial often costs more per mg than a larger one. It most often ships in 5 mg vials, so compare $/mg across those rather than the sticker price on one vial. Tracked LL-37 listings currently run $4.45/mg to $14.25/mg across 5mg, 10mg vials. WPA normalizes tracked listings to $/mg, and the live cost-per-month card estimates your spend at the most common dose. The one catch: the lowest $/mg sometimes means buying a bigger vial than your cycle needs.

How much LL-37 do I need for one full cycle?

LL-37 is typically dosed about three times a week, and 0.5 mg is the most common dose in WPA data. At 0.5 mg per dose a single 5 mg vial covers a little over three weeks, so a standard run usually needs two of the popular 5 mg vials. Across 85 LL-37 calculator runs logged here the most common dose is 200mcg daily (7x/week); a 10mg vial covers roughly 50 of them, and that is the figure the cost-per-month card on this page is built on. Protocols vary and this reflects the most common community setup, not medical advice — research use only. Use the cost-per-month card and the calculator on this page to size your exact run, then buy enough to finish a cycle without re-ordering mid-protocol.

Are discount codes available for LL-37?

Yes — many verified LL-37 vendors offer WPA researcher discount codes, and those savings are already baked into the $/mg ranking on this page, so you're never comparing a pre-discount price against a post-discount one. Codes do change, and some exclude sale items or carry order minimums. 10 of the 10 tracked LL-37 listings carry a code right now, the largest worth 50% off. Each listing shows the current code and the discounted price where one exists.

Lowest priced LL-37 peptide for sale?

To surface the lowest priced LL-37 for sale, WPA continuously compares 14 USA suppliers and 956 "for research" products, ranking every verified LL-37 listing by true cost so the cheapest vials rise to the top. The lowest priced single LL-37 vial currently starts at $33.15. We currently track 10 LL-37 products in our system. Pricing is generally refreshed weekly as vendors update stock, prices, and discount codes.