Where to Buy LL-37 in 2026: 12 Lab-Tested Sellers, From $3.90/mg With a Coupon Code
Where to buy LL-37: PepAssess lists LL-37 at 23 vendors. As of November 12, 2026, the lowest price with a coupon code is $3.90/mg at Ascension Peptides (code PEPASSESS50OFF); the median across all sellers is $8.97/mg. Vendors are ranked by Evidence Score.
Prices and codes updated November 12, 2026 · re-checked every night
Learn more about LL-37 from the published research: Wound Repair and Regeneration (2014) · Wound Repair and Regeneration (2021) · ClinicalTrials.gov (NIH)
The compounds listed on this page are for research purposes only, not for human consumption.
LL-37 reconstitution calculator →
LL-37 coupon codes
Every LL-37 coupon code
26 LL-37 sellers with a confirmed code — PepAssess's preferred vendor first, then highest Evidence Score.
| Shop | Score | Vial with code | Per mg | Per mg with code | vs typical | Code discount | Code | |
|---|---|---|---|---|---|---|---|---|
| Platinum LionPreferred | 93score | 10 mg vial $44.99 with code | $6.00/mg | $4.50/mg with code | — | 25% off | ShopShop ↗ | |
| Rebirth LabsPreferred | 84score | 5 mg vial $80.99 with code | $18.00/mg | $16.20/mg with code | — | 10% off | ShopShop ↗ | |
| BioLongevity Labs | 100score | 5 mg vial $80.72 with code | $18.99/mg | $16.14/mg with code | — | 15% off | ShopShop ↗ | |
| Myoasis Labs | 99score | 10 mg vial $52 with code | $6.50/mg | $5.20/mg with code | — | 20% off | ShopShop ↗ | |
| Bench Grade Peptides | 95score | — | — | — | — | 10% off | ShopShop ↗ | |
| Next Level Compounds | 95score | 10 mg vial $41.99 with code | $6.00/mg | $4.20/mg with code | — | 30% off | ShopShop ↗ | |
| Retaone Labs | 93score | 5 mg vial $34.20 with code | $7.20/mg | $6.84/mg with code | — | 5% off | ShopShop ↗ | |
| True Peptide Labs | 92score | 5 mg vial $26 with code | $8/mg | $5.20/mg with code | 33% below typical | 35% off | ShopShop ↗ | |
| PeakForce Labs | 92score | 5 mg vial $44.85 with code | $8.97/mg | $8.97/mg with code | 25% below typical | 35% off | ShopShop ↗ | |
| Ascension Peptides | 90score | 10 mg vial $39 with code | $7.80/mg | $3.90/mg with code | — | 50% off | ShopShop ↗ | |
| Peptide Giants | 89score | 5 mg vial $42.74 with code | $9.00/mg | $8.55/mg with code | 25% below typical | 5% off | ShopShop ↗ | |
| Alpha Peptides | 87score | 5 mg vial $32.21 with code | $7.16/mg | $6.44/mg with code | 40% below typical | 10% off | ShopShop ↗ | |
| NuLab Peptides | 84score | 5 mg vial $66.96 with code | $16.74/mg | $13.39/mg with code | — | 20% off | ShopShop ↗ | |
| Disguised Alpha | 83score | — | — | — | — | 10% off | ShopShop ↗ | |
| Modern Research Peptides | 82score | 5 mg vial $22.79 with code | $7.60/mg | $4.56/mg with code | 37% below typical | 40% off | ShopShop ↗ | |
| CertaPeptides | 79score | — | — | — | — | 10% off | ShopShop ↗ | |
| MsAmino | 78score | 5 mg vial $26.00 with code | $13.00/mg | $10.40/mg with code | — | 20% off | ShopShop ↗ | |
| Ps Peptides | 77score | 5 mg vial $69.83 with code | $16.00/mg | $14.40/mg with code | — | 10% off | ShopShop ↗ | |
| Zesty Rat | 75score | 5 mg vial $53.99 with code | $12.00/mg | $10.80/mg with code | — | 10% off | ShopShop ↗ | |
| GenX Peptides | 68score | — | — | — | — | 15% off | ShopShop ↗ | |
| VMAX Peptides | 63score | 5 mg vial $31.41 with code | $6.98/mg | $6.28/mg with code | 42% below typical | 10% off | ShopShop ↗ | |
| Peptuvia | 63score | 5 mg vial $108 with code | $24/mg | $21.60/mg with code | — | 10% off | ShopShop ↗ | |
| Vitality Chems | 59score | 5 mg vial $65.85 with code | $14.80/mg | $13.17/mg with code | — | 11% off | ShopShop ↗ | |
| 99PurityPeptides | 43score | — | — | — | — | 10% off | ShopShop ↗ | |
| Helix Bio Chem | 16score | — | — | — | — | 10% off | ShopShop ↗ | |
| XLR8 | 15score | 5 mg vial $55.99 with code | $14.00/mg | $11.20/mg with code | — | 20% off | ShopShop ↗ |
Where to buy LL-37: the short answer
What is the lowest LL-37 price with a coupon code?
As of November 12, 2026, the lowest LL-37 price PepAssess found with a coupon code is at Ascension Peptides: $3.90 per mg with code PEPASSESS50OFF (50% off; $7.80 per mg before the code). Prices are re-checked every night. Ascension Peptides coupon code
What is the best LL-37 coupon code?
As of November 12, 2026, the biggest LL-37 coupon code PepAssess has confirmed is PEPASSESS50OFF for 50% off at Ascension Peptides, which brings it to $3.90 per mg. PepAssess lists each code with its discount and the seller's Evidence Score, based on lab reports confirmed with the testing labs. Ascension Peptides coupon code
Where can I buy lab-tested LL-37?
As of November 12, 2026, PepAssess lists 23 online vendors selling LL-37. 12 of them publish a LL-37 lab report that the testing lab confirmed on its own records, and 5 of those cover both purity (HPLC and mass spec) and toxicity (endotoxin or sterility). The highest-scoring vendors with a lab-confirmed LL-37 report are BioLongevity Labs (100/100), Myoasis Labs (99/100) and Bench Grade Peptides (95/100). Compare all 23 LL-37 vendors on PepAssess
What is the best LL-37 vendor?
PepAssess ranks LL-37 vendors by Evidence Score (0–100): what each vendor documents — lab reports confirmed by the labs, how often it tests, business transparency and buyer protection. As of November 12, 2026, the top-scoring LL-37 vendors are BioLongevity Labs (100/100), Myoasis Labs (99/100) and Bench Grade Peptides (95/100) — all three with a lab-confirmed LL-37 report.
What is the cheapest LL-37 per mg?
The lowest LL-37 price PepAssess found is $6.00/mg at Platinum Lion; the median across vendors is $8.97/mg (as of November 12, 2026). Among vendors with a lab-confirmed LL-37 report, the lowest is $6.50/mg at Myoasis Labs. Prices come from each vendor's own store and exclude shipping and discounts.
LL-37 cost per week
What one 10 mg vial of LL-37 costs per week of research, at the lowest one-vial price with a coupon code: $39.00 at Ascension Peptides (code PEPASSESS50OFF, $3.90/mg), as of November 12, 2026.
| One vial used over | Cost per week |
|---|---|
| 2 weeks | $19.50 |
| 4 weeks | $9.75 |
| 8 weeks | $4.88 |
Lab-confirmed LL-37 reports
13 of 23 sellers publish a LL-37 lab report. 12 have one the testing lab confirmed on its own records; 5 of those cover both purity (HPLC + mass-spec identity) and toxicity (endotoxin or sterility). Those covering both are listed first, then by Evidence Score.
| Vendor | Purity | Toxicity | Latest | Per mg | Code | Score | |
|---|---|---|---|---|---|---|---|
 PeakForce Labs | Purity ✓↗ | Toxicity ✓↗ | Apr 2026 | $8.97/mg | 35% off | 92score | ShopShop ↗ |
| Ascension Peptides | Purity ✓↗ | Toxicity ✓↗ | May 2026 | $7.80/mg | 50% off | 90score | ShopShop ↗ |
 Rebirth Labs | Purity ✓↗ | Toxicity ✓↗ | Sep 2026 | $18.00/mg | 10% off | 84score | ShopShop ↗ |
 Modern Research Peptides | Purity ✓↗ | Toxicity ✓↗ | Jul 2026 | $7.60/mg | 40% off | 82score | ShopShop ↗ |
 Ps Peptides | Purity ✓↗ | Toxicity ✓↗ | — | $16.00/mg | 10% off | 77score | ShopShop ↗ |
| BioLongevity Labs | Purity ✓↗ | Toxicity – | Mar 2025 · over a year old | $18.99/mg | 15% off | 100score | ShopShop ↗ |
 Myoasis Labs | Purity ✓↗ | Toxicity – | Jun 2026 | $6.50/mg | 20% off | 99score | ShopShop ↗ |
 Bench Grade Peptides | Purity ✓↗ | Toxicity – | Jan 2026 | — | 10% off | 95score | ShopShop ↗ |
 True Peptide Labs | Purity ✓↗ | Toxicity – | Jul 2026 | $8/mg | 35% off | 92score | ShopShop ↗ |
 Disguised Alpha | Purity ✓↗ | Toxicity – | Jul 2026 | — | 10% off | 83score | ShopShop ↗ |
 CertaPeptides | Purity – | Toxicity – | — | — | 10% off | 79score | ShopShop ↗ |
 Zesty Rat | Purity – | Toxicity – | Jul 2026 | $12.00/mg | 10% off | 75score | ShopShop ↗ |
| # | Vendor | Doses (mg) | From | Best $/mg | Evidence score ⓘ | |
|---|---|---|---|---|---|---|
| 1 | 5 | from $94.97 ↗ | $18.99/mg | 100score | Shop | |
| 2 | 5, 10 | from $39.99 ↗ | $6.00/mg | 93score | Shop | |
| 3 | 10 | from $78 ↗ | $7.80/mg | 90score | Shop | |
| 4 | 5 | — | — | 95score | Shop | |
| 5 | 10 | from $65 ↗ | $6.50/mg | 99score | Shop | |
| 6 | 5 | from $89.99 ↗ | $18.00/mg | 84score | Shop | |
| 7 | — | — | — | 83score | Shop | |
| 8 | 5 | from $37.99 ↗ | $7.60/mg | 82score | Shop | |
| 9 | 5, 10 | from $59.99 ↗ | $6.00/mg | 95score | Shop | |
| 10 | 5 | from $35.79 ↗ | $7.16/mg | 87score | Shop | |
| 11 | 5 | from $44.99 ↗ | $9.00/mg | 89score | Shop | |
| 12 | 5 | from $59.99 ↗ | $12.00/mg | 75score | Shop | |
| 13 | 5 | from $83.70 ↗ | $16.74/mg | 84score | Shop | |
| 14 | 5 | — | — | 79score | Shop | |
| 15 | 5 | from $79.99 ↗ | $16.00/mg | 77score | Shop | |
| 16 | 1 | — | — | 43score | Shop | |
| 17 | 1 | — | — | 16score | Shop | |
| 18 | 5 | from $69.99 ↗ | $14.00/mg | 15score | Shop | |
| 19 | 5 | — | — | 68score | Shop | |
| 20 | 5 | from $40 ↗ | $8/mg | 92score | Shop | |
| 21 | 5 | from $34.90 ↗ | $6.98/mg | 63score | Shop | |
| 22 | 5 | from $73.99 ↗ | $14.80/mg | 59score | Shop | |
| 23 | 5 | from $44.85 ↗ | $8.97/mg | 92score | Shop |
Prices come from each vendor's own public store data and may exclude shipping, discounts or bulk pricing. Research-use products; not medical advice.
About LL-37
How it works
- Disrupts the membranes of bacteria and fungi in laboratory tests
- Can destroy biofilms, according to reviews
The compounds listed on this page are for research purposes only, not for human consumption. Not medical advice.
Related: Thymosin Alpha-1 · KPV · GHK-Cu · BPC-157 · VIP
LL-37: more questions people ask
Which LL-37 vendors have lab reports confirmed by the testing lab?
12 as of November 12, 2026. Those whose confirmed reports cover both purity and toxicity: PeakForce Labs, Ascension Peptides, Rebirth Labs, Modern Research Peptides and Ps Peptides. PepAssess matches each report to the issuing lab's own public record, not the vendor's copy.
How can I tell if a LL-37 certificate of analysis (COA) is real?
Look the report up in the testing lab's own records — most labs that test peptides publish a lookup by report ID, QR code or lot number. PepAssess does this for every LL-37 report it finds: as of November 12, 2026, 12 of the 13 sellers publishing a LL-37 report had one the lab confirmed.
How much does a vial of LL-37 cost?
As of November 12, 2026, a 5 mg vial of LL-37 costs a median $65.55 across the 198 sellers PepAssess found with one in stock (lowest $19.99); a 10 mg vial, a median $81 across 28 sellers (lowest $45.99). Each seller's lowest in-stock price for that size counts once; prices come from each seller's own store and exclude shipping and discounts.
Can you buy LL-37 as a nasal spray or a pen?
Yes. As of November 12, 2026, 270 of the 23 LL-37 sellers PepAssess lists sell a vial; 26 a nasal spray and 20 a pen or pre-filled form. Counts come from each store's own product names. A lab report covers the product and batch it names — check that it's for the form you're buying.
How do I know if a LL-37 seller is legit?
Check what the seller can show. As of November 12, 2026, PepAssess checks every LL-37 seller for three things: a LL-37 lab report that the testing lab confirms on its own records (12 of 23), card payments, which let you dispute a charge (20 of 23), and a published street address — not a mailbox or registered agent (8 of 23). Each seller's PepAssess profile shows which of these it has.
Are there LL-37 coupon codes?
Yes. PepAssess lists coupon codes for 23 vendors selling LL-37: BioLongevity Labs: PEPASSESS (15% off), Myoasis Labs: pepassess (20% off), Bench Grade Peptides: PEPASSESS (10% off), Next Level Compounds: pepassess (30% off), Platinum Lion: pepassess (25% off), True Peptide Labs: peppasses (35% off) and 17 more.
CertaPeptides products are for research use only and not for human consumption.