Either one is a solid choice, since both are vetted by PeptidePrices. They score 9/10 each; EZ Peptides has the lower shared basket after codes ($561.05 against $677.03). PS Peptides holds more COAs (195 against 99). Pick EZ Peptides for the lower basket and PS Peptides for the larger COA record.
Key takeaways
- Price: EZ Peptides is lower on 7 and PS Peptides on 9 of 16 shared compounds before codes, and 7 to 9 after reader codes. One standard amount of each costs $561.05 at EZ Peptides and $677.03 at PS Peptides after codes.
- Score: EZ Peptides scores 9/10 and PS Peptides 9/10 on the published rubric (40% COA practices, 20% each for reputation, transparency and operations).
- COAs: EZ Peptides has 99 COAs and PS Peptides has 195 COAs.
- Reviews: EZ Peptides shows 4.7/5 from 83 reviews on a community review site; PS Peptides shows 4.3/5 from 204 reviews on Trustpilot.
- Shipping: EZ Peptides ships to United States only, with free shipping over $200; PS Peptides ships to United States and international destinations, with free shipping over $200.
- Codes: EZ Peptides, peptideprices for 10% off; PS Peptides, PEPTIDEPRICES for 10% off.
In this article
EZ Peptides and PS Peptides are both tracked by PeptidePrices, so this comparison uses the same evidence for both: the published evidence score and its four factors, the certificates of analysis we could match to an exact product and strength, every overlapping listing price, the current reader codes, and each vendor's published shipping and payment terms. Prices reflect the latest listing checks through November 6, 2026. Scores and certificate counts come from each vendor's PeptidePrices review.
EZ Peptides vs PS Peptides at a glance
| EZ Peptides | PS Peptides | |
|---|---|---|
| Evidence score | 9/10 | 9/10 |
| COA quality score | Not scored | 9/10 |
| COA program | COA verified | COA verified |
| COA records held (total) | 99 COAs | 195 COAs |
| In-stock listings with an exact verified COA | 3 of 39 | 26 of 26 |
| Laboratories on matched certificates | Janoshik | North American Diagnostics |
| In-stock listings | 39 | 26 |
| Distinct compounds in stock | 34 | 19 |
| Reader code | peptideprices (10% off) | PEPTIDEPRICES (10% off) |
| Ships to | United States only | United States and international destinations |
| Payment methods | Visa, Mastercard, American Express | Credit/debit card, Afterpay, Klarna, Apple Pay, Google Pay, Cash App, Zelle |
| Location | Albuquerque, NM | Paramus, NJ |
| Founded | 2023 | 2020 |
| Review profile | a community review site 4.7/5 (83 reviews) | Trustpilot 4.3/5 (204 reviews) |
Evidence score and factor breakdown
PeptidePrices scores every vendor on the same published rubric: 40% COA practices, 20% community reputation, 20% transparency, and 20% operations. Affiliate relationships are not a scoring factor. Read the full methodology.
| Factor (weight) | EZ Peptides | PS Peptides |
|---|---|---|
| COA practices (40%) | 9/10 | 9/10 |
| Community reputation (20%) | 10/10 | 9/10 |
| Transparency (20%) | 8/10 | 8/10 |
| Operations (20%) | 8.5/10 | 9/10 |
| Weighted result | 8.9/10 | 8.8/10 |
| Published score | 9/10 | 9/10 |
The factor scores differ on community reputation (EZ Peptides +1), operations (PS Peptides +0.5). The remaining factors are tied.
Our PS Peptides verdict
PS Peptides earns 9/10. The October 4 review reconciled 195 report identities across 660 complete files: 190 exact lab-confirmed North American Diagnostics reports and five vendor-named Vanguard reports retained with neutral file-reviewed status. Current strength tabs show 96 primary reports; 99 historical identities remain inspectable. Five current GLP-3R tabs pair new Vanguard primary lots with older NAD supplemental panels from different lots, which stay separate. Trustpilot showed 4.3/5 from 204 exact-domain reviews on October 3, 2026.
Full evidence, strengths, and watch-outs: PS Peptides reviews.
Certificates of analysis (COA) evidence
A certificate only counts here when PeptidePrices matched it to the exact vendor, compound, and strength of a live listing and confirmed it against the issuing laboratory's record. Nearby strengths and historical reports stay in the COA library but do not attach to a listing.
EZ Peptides
COA verified: 32 of 99 reports on file match the lab's own records and name this vendor. PeptidePrices holds 99 COA records for EZ Peptides. 3 in-stock listings of 39 carry an exact issuer-verified certificate; the newest matched certificate was analyzed September 5, 2025. Matched certificates by laboratory: Janoshik (3).
PS Peptides
COA verified: 190 of 195 reports on file match the lab's own records and name this vendor. PeptidePrices holds 195 COA records for PS Peptides. 26 in-stock listings of 26 carry an exact issuer-verified certificate; the newest matched certificate was analyzed August 28, 2026. Matched certificates by laboratory: North American Diagnostics (26).
Verified certificates on shared compounds
| Compound | EZ Peptides | PS Peptides |
|---|---|---|
| 5-Amino-1MQ | No exact match | 5mg · North American Diagnostics · July 3, 2026 |
| ARA-290 | No exact match | 10mg · North American Diagnostics · July 30, 2026 |
| BPC-157 | No exact match | 5mg · North American Diagnostics · August 28, 2026 |
| CJC-1295 | No exact match | 5mg · North American Diagnostics · June 11, 2026 |
| CJC-1295 No DAC + Ipamorelin | No exact match | 10mg · North American Diagnostics · June 12, 2026 |
| Epithalon | No exact match | 10mg · North American Diagnostics · June 11, 2026 |
| GHK-Cu | No exact match | 50mg · North American Diagnostics · June 12, 2026 |
| GLOW | No exact match | 70mg · North American Diagnostics · June 11, 2026 |
| Kisspeptin-10 | No exact match | 5mg · North American Diagnostics · June 12, 2026 |
| KLOW Protocol | No exact match | 80mg · North American Diagnostics · June 11, 2026 |
| Melanotan-1 | No exact match | 10mg · North American Diagnostics · June 12, 2026 |
| Melanotan-2 | No exact match | 10mg · North American Diagnostics · June 12, 2026 |
| MOTS-c | No exact match | 10mg · North American Diagnostics · June 11, 2026 |
| SS-31 | 30mg · Janoshik · August 12, 2025 | 10mg · North American Diagnostics · June 15, 2026 |
| Thymosin Alpha-1 | No exact match | 10mg · North American Diagnostics · June 12, 2026 |
| Wolverine | No exact match | 20mg · North American Diagnostics · June 11, 2026 |
Price-by-price: every overlapping compound
The two catalogs share 16 compounds; 16 have a normalized price at both vendors (price divided by vial size, scaled to the compound's standard research amount). Each vendor's cheapest in-stock package per compound is used. Coupon prices apply each vendor's current verified reader code to that package.
| Compound | EZ Peptides packages | PS Peptides packages | EZ Peptides per std. amount | PS Peptides per std. amount | Lower before coupon | Lower after coupon |
|---|---|---|---|---|---|---|
| 5-Amino-1MQ | 50mg $68.00 | 5mg $34.99 | $13.60 / 10mg | $69.98 / 10mg | EZ Peptides (81% less) | EZ Peptides |
| ARA-290 | 10mg $48.00 | 10mg $59.99 | $48.00 / 10mg | $59.99 / 10mg | EZ Peptides (20% less) | EZ Peptides |
| BPC-157 | 10mg $44.00 | 5mg $49.99; 10mg $89.99 | $44.00 / 10mg | $89.99 / 10mg | EZ Peptides (51% less) | EZ Peptides |
| CJC-1295 | 5mg $38.00 | 5mg $35.99 | $76.00 / 10mg | $71.98 / 10mg | PS Peptides (5% less) | PS Peptides |
| CJC-1295 No DAC + Ipamorelin | 10mg $53.00 | 10mg $65.99 | $53.00 / 10mg | $65.99 / 10mg | EZ Peptides (20% less) | EZ Peptides |
| Epithalon | 10mg $38.00 | 10mg $59.99; 50mg $129.99 | $38.00 / 10mg | $26.00 / 10mg | PS Peptides (32% less) | PS Peptides |
| GHK-Cu | 50mg $35.00; 100mg $53.00 | 50mg $34.99; 100mg $44.99 | $5.30 / 10mg | $4.50 / 10mg | PS Peptides (15% less) | PS Peptides |
| GLOW | 70mg $88.00 | 70mg $84.99 | $12.57 / 10mg | $12.14 / 10mg | PS Peptides (3% less) | PS Peptides |
| Kisspeptin-10 | 10mg $44.00 | 5mg $39.99; 10mg $59.99 | $44.00 / 10mg | $59.99 / 10mg | EZ Peptides (27% less) | EZ Peptides |
| KLOW Protocol | 80mg $98.00 | 80mg $109.99 | $12.25 / 10mg | $13.75 / 10mg | EZ Peptides (11% less) | EZ Peptides |
| Melanotan-1 | 10mg $44.00 | 10mg $39.99 | $44.00 / 10mg | $39.99 / 10mg | PS Peptides (9% less) | PS Peptides |
| Melanotan-2 | 10mg $44.00 | 10mg $39.99 | $44.00 / 10mg | $39.99 / 10mg | PS Peptides (9% less) | PS Peptides |
| MOTS-c | 10mg $54.00 | 10mg $69.99; 50mg $189.99 | $54.00 / 10mg | $38.00 / 10mg | PS Peptides (30% less) | PS Peptides |
| SS-31 | 30mg $98.00 | 10mg $64.99 | $32.67 / 10mg | $64.99 / 10mg | EZ Peptides (50% less) | EZ Peptides |
| Thymosin Alpha-1 | 10mg $58.00 | 10mg $54.99 | $58.00 / 10mg | $54.99 / 10mg | PS Peptides (5% less) | PS Peptides |
| Wolverine | 10mg $53.00; 20mg $88.00 | 20mg $79.99 | $44.00 / 10mg | $40.00 / 10mg | PS Peptides (9% less) | PS Peptides |
Across the 16 directly comparable compounds, EZ Peptides is lower on 7 and PS Peptides on 9 before coupons. After each vendor's reader code the split is EZ Peptides 7, PS Peptides 9. Buying one standard amount of every comparable compound would cost $623.39 at EZ Peptides and $752.26 at PS Peptides before coupons, or $561.05 and $677.03 after them.
Every vendor's price for these compounds: 5-Amino-1MQ, ARA-290, BPC-157, CJC-1295, Epithalon, GHK-Cu, GLOW, Kisspeptin-10, KLOW Protocol, Melanotan-1, Melanotan-2, MOTS-c.
Catalog breadth
EZ Peptides lists 39 in-stock listings across 34 compounds; PS Peptides lists 26 in-stock listings across 19 compounds. 16 compounds appear at both.
Only at EZ Peptides (18): AOD-9604, Bronchogen, Cagrilintide, Cartalax, Eloralintide, Ipamorelin, KPV, L-Carnitine, LL-37, N-Acetyl Selank Amidate, N-Acetyl Semax Amidate, Oxytocin, GLP-1S, Sermorelin, Survodutide, TB-500, Tesamorelin, VIP.
Only at PS Peptides (3): AHK-Cu, CJC-1295, IGF-1 LR3.
Coupon codes
- EZ Peptides: code peptideprices for 10% off, checkout-verified. Terms and checkout steps: EZ Peptides coupon code.
- PS Peptides: code PEPTIDEPRICES for 10% off, checkout-verified. Terms and checkout steps: PS Peptides coupon code.
Coupon-adjusted prices in the table above use these codes. Confirm the discount at checkout before paying; vendors can change terms.
Shipping and payment
EZ Peptides
- Ships to: United States only
- Payment: Visa, Mastercard, American Express
- Shipping terms: EZ Peptides states that orders process in zero to two business days and that orders placed by 2 PM Eastern can qualify for same-day processing. It ships only within the United States, excludes PO boxes and military addresses, and offers free standard shipping over $200. Eligible sealed products have a seven-day return window.
- Testing statement: Public Janoshik report library with task, batch, identity, purity, and measured-content results. Check the linked report because at least one page summary conflicts with its report image.
PS Peptides
- Ships to: United States and international destinations
- Payment: Credit/debit card, Afterpay, Klarna, Apple Pay, Google Pay, Cash App, Zelle
- Shipping terms: The site states that every order ships free and that orders over $200 receive free UPS 2nd Day Air. Its main page and FAQ give different same-day cutoffs, so expect most orders to ship the same or next business day.
- Testing statement: 195 report identities across 660 complete files: 190 exact North American Diagnostics matches to lab records and five neutral file-reviewed Vanguard reports. Current and historical lots remain separate.
Transparency and reputation
EZ Peptides lists its location as Albuquerque, NM and was founded in 2023. Its a community review site profile showed 4.7/5 from 83 reviews when checked on October 3, 2026. Customer reviews describe service and delivery; they do not verify product identity or laboratory results.
EZ Peptides strengths: 99 issued Janoshik report identities and all 99 report pages retained; All 32 prior exact matches to lab records and original verification dates preserved; 67 additional source reports are labeled lab unavailable; A community review site separately shows 4.7/5 from 83 reviews; The public site identifies EZ Peptides LLC and lists an Albuquerque mailing suite, support email, and phone number.
EZ Peptides watch-outs: Two recovered endotoxin panels are batch-specific; most reports cover identity, purity and measured content without sterility or metals results; The MOTS-C page summary conflicts with the values on its linked Janoshik report; A public Reddit thread documents identical report values across related sellers and disputes prior U.S.-production framing; The current site says products are lyophilized in the USA, but PeptidePrices did not verify where they were synthesized.
PS Peptides lists its location as Paramus, NJ and was founded in 2020. Its Trustpilot profile showed 4.3/5 from 204 reviews when checked on October 3, 2026. Customer reviews describe service and delivery; they do not verify product identity or laboratory results.
PS Peptides strengths: 195 report identities across 660 complete retained files and pages; 190 report identities authenticated against North American Diagnostics records; Five Vanguard primary reports retained with clear file-reviewed status; Same-ID laboratory panels stay together; different-lot panels stay separate.
PS Peptides watch-outs: North American Diagnostics prints Date Ordered, without an analysis or issue date; Five current Vanguard GLP-3R primary reports lack an authenticated specific public lab record; Five current tabs display supplemental NAD panels from different lots; Historical reports and nearby strengths do not establish current stock-lot coverage.
Verdict by use case
- Lowest cost on the shared catalog: EZ Peptides. After reader codes, one standard amount of each of the 16 comparable compounds costs $561.05 there versus $677.03. Check the table for the compound you actually need; the cheaper vendor is not cheaper on every line.
- Most listings backed by an exact verified certificate: PS Peptides (26 in-stock listings, 100% of its catalog).
- More payment options: PS Peptides (Credit/debit card, Afterpay, Klarna, Apple Pay, Google Pay, Cash App, Zelle).
- Shipping outside the United States: PS Peptides (United States and international destinations).
- Wider catalog: EZ Peptides (34 compounds in stock).
- Compounds only one vendor carries: EZ Peptides for AOD-9604, Bronchogen, Cagrilintide, Cartalax, Eloralintide and more; PS Peptides for AHK-Cu, CJC-1295, IGF-1 LR3.
Whichever vendor you choose, match the certificate to the exact product, strength, and lot before relying on it. Full reviews: EZ Peptides reviews and PS Peptides reviews.
PeptidePrices is independently owned and participates in affiliate programs with some vendors. Affiliate status is never a scoring factor, and neither vendor can edit or approve this comparison.
More vendor comparisons
- EZ Peptides: EZ Peptides vs Ameano Peptides
Frequently asked questions
Is EZ Peptides or PS Peptides cheaper?
On the 16 compounds both vendors price by vial size, EZ Peptides is lower on 7 and PS Peptides on 9 before coupons (EZ Peptides 7, PS Peptides 9 after reader codes). One standard amount of each costs $561.05 at EZ Peptides and $677.03 at PS Peptides after codes, based on listing checks through November 6, 2026.
Which has more COAs, EZ Peptides or PS Peptides?
EZ Peptides has 99 COAs and PS Peptides has 195 COAs. 3 in-stock listings at EZ Peptides and 26 at PS Peptides carry an exact issuer-verified certificate for the listed product and strength.
Which labs test EZ Peptides and PS Peptides products?
Matched certificates name Janoshik for EZ Peptides and North American Diagnostics for PS Peptides.
Do EZ Peptides and PS Peptides have coupon codes?
EZ Peptides: peptideprices for 10% off. PS Peptides: PEPTIDEPRICES for 10% off.
Do EZ Peptides and PS Peptides ship internationally?
EZ Peptides ships to United States only. PS Peptides ships to United States and international destinations.
Is EZ Peptides legit?
EZ Peptides scores 9/10 on PeptidePrices' evidence rubric (40% COA practices, 20% reputation, 20% transparency, 20% operations). See the full EZ Peptides review for the evidence behind the score.
Is PS Peptides legit?
PS Peptides scores 9/10 on PeptidePrices' evidence rubric (40% COA practices, 20% reputation, 20% transparency, 20% operations). See the full PS Peptides review for the evidence behind the score.