Yes: four rated vendors that sell GHK-Cu accept a PeptideChecked code, and Ascension Peptides' AFFILIATE50OFF saves the most, at 50% off a first order. PSPeptides and Blank Peptides take 10% off with CHECKED, and Licensed Peptides takes 5% off with Affiliate5. Codes are from our vendor records; we didn't re-test them at checkout for this page.
Facts checked October 16, 2026.
Notice: Research peptides are sold for in-vitro laboratory research only. They are not FDA-approved, not for human or animal consumption, and this page is not medical advice.
GHK-Cu prices and codes
Single-vial GHK-Cu prices shown on each vendor's site on October 16, 2026 (Blank Peptides: October 12, 2026, behind a free member sign-up), including any displayed sale price. "After code" is arithmetic, not a checkout quote. Vendors appear in our editors' order, which isn't sorted by score.
| Vendor | GHK-Cu vial | Price | Code | After code | $/mg after code | Score |
|---|
| NextGenPeps | 50 mg | $51.00 | No public code we verified | - | $1.02 | 8.8 |
| PSPeptides | 50 mg / 100 mg | $34.99 to $44.99 | CHECKED (10%) | $31.49 to $40.49 | from $0.40 | 8.5 |
| Blank Peptides | 100 mg | $75.00 | CHECKED (10% off order) | $67.50 | $0.68 | 7.8 |
| Ascension Peptides | 100 mg (3 mL / 10 mL vial) | $59.00 / $69.00 | AFFILIATE50OFF (50%, first order) | $29.50 / $34.50 | $0.30 / $0.35 | 8.1 |
| Peptide Plugs | 100 mg | $35.00 | No public code we verified | - | $0.35 | 7.5 |
| Licensed Peptides | 50 mg | $61.99 | Affiliate5 (5%) | $58.89 | $1.18 | 7.4 |
Sources: NextGenPeps, PSPeptides, Blank Peptides, Ascension, Peptide Plugs, Licensed Peptides.
PSPeptides showed only a price range for its 50mg and 100mg vials on October 16, so the after-code figures cover the bottom and top of that range, and "from $0.40" assumes the 100mg is the $44.99 vial. Only CHECKED, AFFILIATE50OFF and Affiliate5 are PeptideChecked codes; we don't copy codes from coupon aggregator sites.
Disclosure: PeptideChecked has affiliate relationships with PSPeptides, Blank Peptides, Ascension Peptides and Licensed Peptides. We may earn a commission if you buy through our links or use these codes. That doesn't change any rating, which comes only from our published method.
What each vendor offers on GHK-Cu
- Ascension Peptides: AFFILIATE50OFF is for a first order. Both listings are 100mg; the difference is vial volume. The 3mL vial showed $59.00 (was $84.99) and the 10mL $69.00 (was $94.99), with volume pricing of $53.10 a vial at 10 on the 3mL. The page names Kovera Labs (batch 16-05260628, June 26, 2026). Details: Ascension Peptides coupon code.
- PSPeptides: CHECKED takes 10% off. The page lists bundle discounts (3% at 2 vials, 6% at 3, 9% at 4 or more), a 10% subscribe option and 40% off 10-vial kits. Current batches for both sizes (August 2026 uploads) link COA, heavy metals, endotoxin, sterility and fentanyl reports, though the page doesn't name the lab. The page gives two free-shipping thresholds, $150 and $200, for 2nd Day Air. Details: PSPeptides coupon code.
- Blank Peptides: CHECKED takes 10% off the entire order. On October 12, 2026, GHK-Cu 100mg was $75.00 for members, or $67.50 a vial at 3 or more. On October 16 its homepage offered new members 25% off a first order. Details: Blank Peptides coupon code.
- Licensed Peptides: Affiliate5 takes 5% off. The GHK-Cu page offers 50mg and 100mg; the 50mg showed $61.99, with a 2-for-1 sale applied (you pay for the pricier vial, the second is included). We couldn't confirm whether Affiliate5 stacks with the sale. Details: Licensed Peptides coupon code.
- NextGenPeps: no code from us. Its shop showed GHK-Cu 50mg at $51.00 on October 16 (it was $41 when we checked on September 26), and its footer offers a 10% code for email sign-up.
- Peptide Plugs: no code. Volume pricing runs from 5% off at 2 vials to 40% off ($21 a vial) at 10 or more. Its current lot (208100C-DK, August 22, 2026) reports 99.83% purity and 116.79mg measured against a 100mg label, from Freedom Diagnostics.
- American Peptides: no PeptideChecked code. Its GHK-Cu page listed 50mg at $50 when we checked on September 26, 2026. On October 16 a site banner advertised its own weekend code, MAD25, for 25% off sitewide for a limited time.
- Alpha Pro Peptides: no code, but it showed a "Buy 1 Get 1 Free Site Wide" banner on October 16, 2026.
- Peptide Confidential: both GHK-Cu sizes were out of stock on October 16, 2026.
Cheapest GHK-Cu after codes
On a first order, Ascension's 100mg (3mL) vial at $29.50 after AFFILIATE50OFF works out to $0.30 per mg, the lowest single-vial figure here. Without a first-order code, Peptide Plugs is lowest at $0.35 per mg, and its 10-vial price of $21 a vial brings that to $0.21 per mg. PSPeptides with CHECKED comes to about $0.40 per mg on its larger vial. All of these are list-price arithmetic from October 16, 2026, before shipping.
How to apply a code
- Go to the vendor through our link, or type its address.
- Add GHK-Cu to your cart.
- Enter the code in the coupon or discount-code field at checkout.
- Confirm the discount line appears before you pay.
If it doesn't apply, check for a typo, a sale item the vendor excludes, or (for Ascension) a previous order. Codes and terms are set by the vendor and can change at any time.
Terms we couldn't confirm
None of PSPeptides, Blank Peptides, Ascension or Licensed Peptides publishes stacking rules we could find. We couldn't confirm whether these codes apply on top of sale prices, volume pricing, Blank's new-member offer or Licensed Peptides' 2-for-1 sale, or whether they exclude serums and blends. Treat the checkout total as the answer.
Before you use a discount
GHK-Cu is cheap per mg at most vendors, so documentation matters more than a few dollars off. Our GHK-Cu vendor comparison found none of these vendors had independent Finnrick results for GHK-Cu, which leaves lot matching and lab-side verification as your main checks. FDA's Category 2 compounding page lists "GHK-Cu (for injectable routes of administration)" among nominations withdrawn by the nominators; research-labeled GHK-Cu isn't an approved drug. Read the certificate with our COA guide.
Comparing blends that include GHK-Cu? See GLOW and KLOW blend vendors. Every vendor's current offer is on our peptide coupon codes hub.
Try Ascension Peptides: 50% off first order with code AFFILIATE50OFFCode AFFILIATE50OFF · 8.1/10 overall
Visit Ascension Peptides
Try PSPeptides: 10% off with code CHECKEDCode CHECKED · 8.5/10 overall
Visit PSPeptides
