Synthesis Peptides Reviews (2026): Is It Legit?

Jack Ryan

Synthesis Peptides

Evidence score: 9/10

Synthesis Peptides gets our 9/10 rating (Highly Trusted), with 105 lab reports (COAs) on file. See how scores are calculated →

Visit Synthesis Peptides ↗

How we scored Synthesis Peptides

Reviewed by Jack Ryan, co-founder & editorial lead · Updated October 3, 2026

COA practices 40%9.5/10

Reputation 20%8/10

Transparency 20%9.5/10

Operations 20%8/10

The four factors average 8.9 by weight, which rounds to 9/10.

Direct answer

Is Synthesis Peptides legit?

We rate Synthesis Peptides 9/10. The October 4 archive retains 105 complete reports:104 matches to lab records and one new Vanguard B12 no-match. Four historical Freedom reports were newly verified; all 100 prior IDs and lab states remain preserved. The September 17 review found 85 exact product matches. The store publishes clear US shipping terms, accepts major cards and PayPal, and offers a confirmed 15% off with code PEPTIDEPRICES.

COA evidenceCOA quality 9.5/10COA verified104 of 105 reports on file match the lab's own records and name this vendor

Testing labs: Freedom Diagnostics, Kovera Labs, ILS Laboratories, Vanguard Laboratory

Browse 105 report records in the COA library →

Evidence summary

Synthesis Peptides COAs and evidence

Synthesis Peptides earns 9/10. Its expanded 105-report archive preserves 104 exact matches to lab records and one new B12 no-match, with all 100 prior IDs unchanged.

The testing transparency and growing customer record support the 9/10 rating. The current independent profile has 123 reviews; differing dispatch and claim wording, a mailbox address and exact-strength gaps remain disclosed.

Strong multi-lab certificate coverage

The October 4, 2026 finite source review preserves all 100 prior lab-confirmed public IDs and adds four historical Freedom reports plus one two-page Vanguard B12 report, for 105 complete public certificates across 123 report pages. The lab scope is 104 exact matches and one new Vanguard no-match. All four printed Freedom code lookups completed in Chrome and their complete official PDFs match client, report/input codes, product, strength, dates, purity and measured content; two originals match byte for byte and two have encoding/layout variations with identical fields. The exact Vanguard ID V260713-4 001 with printed brand Synthesis Peptides returned No certificates found. Its report prints 1 mg/mL nominal B12 versus 4.47/4.33 mg/mL measured; both pages and all five printed identity/quantity/metals/endotoxin/sterility assays are retained, with no purity percentage invented. The two CJC reports omit DAC status; the September CJC report prints CJC-1295/Glycine identity. All five additions stay archive-only. The September 17 review of 85 exact product matches remains a dated scope. Prior five Freedom no-matches and two L-carnitine Vanguard/Orbitrex attribution holds remain excluded; unrelated dispute material is not a certificate. Current shipped lots remain unconfirmed.

Reputation

The current.co storefront publishes a synthesispeptides.io support contact, linking it to the Trustpilot profile at that domain. On October 3 the profile lists 4.9/5 from 123 reviews. Readable customers describe quick delivery, personal responses and resolution of order issues. One revised stock complaint describes an expedited comparable item; another raises shipping-envelope quality. Trustpilot identifies an invited-review profile. These purchaser accounts support the approved 8/10 reputation factor separately from the 104 lab-confirmed certificates.

Shipping and checkout

The store ships inside the United States only. Orders placed before 12pm PST ship the same business day by USPS or UPS, with typical delivery in 1–3 business days after dispatch. Shipping is free over $250. All sales are final. Defective or incorrect items require notice within 72 hours of delivery. The FAQ lists Visa, Mastercard, Amex, Discover, and PayPal. Code PEPTIDEPRICES gives customers 15% off. The homepage and formal shipping page give differing claim deadlines, so use the written policy and report a problem promptly.

Company identity and rating

The storefront publishes 3009 Hawksdale Dr, Unit #153, Las Vegas, NV 89134, and identifies the business as veteran-owned. The public certificate archive, support details, policies, and checkout information support a 9.5/10 transparency factor. Factor scores are COA 9.5, reputation 8, transparency 9.5, and operations 8, for a 9/10 overall rating.

Details

Payment methods: Visa
Mastercard
American Express
Discover
PayPal
Shipping: Orders placed before 12pm PST ship the same business day.
The store uses USPS and UPS and states 1–3 business-day delivery after dispatch.
Shipping is free over $250.
All sales are final.
Defective or incorrect items require notice within 72 hours of delivery.

Reviews

No PeptidePrices reader reviews yet.

Trustpilot, 123 reviews →

In stock: 36 products
Ships to: United States only
Prices checked: Nov 1, 2026

Products (38)

38 products

Peptide	Price	Package	Stock
BPC-1577-test panel COA verified Freedom Diagnostics · Report date Jul 25, 2026	$49.99	10mg	In stock	View listing ↗
TB-5007-test panel COA verified Freedom Diagnostics · Report date Aug 15, 2026	$74.99	10mg	In stock	View listing ↗
MOTS-c6-test panel COA verified Kovera Labs	$49.99	10mg	In stock	View listing ↗
MOTS-c7-test panel COA verified ILS Laboratories · Analysis date Jul 24, 2026	$149.99	40mg	In stock	View listing ↗
NAD+6-test panel COA verified Freedom Diagnostics · Report date Jul 15, 2026	$63.99	500mg	In stock	View listing ↗
Semax3-test panel COA verified Freedom Diagnostics · Report date Nov 25, 2025	$74.99	30mg	In stock	View listing ↗
Semax3-test panel COA verified Freedom Diagnostics · Report date May 8, 2026	$36.99	10mg	In stock	View listing ↗
SelankNo exact COA available	$41.99	10mg	In stock	View listing ↗
Selank7-test panel COA verified Freedom Diagnostics · Report date Aug 15, 2026	$74.99	30mg	In stock	View listing ↗
Tesamorelin6-test panel COA verified Kovera Labs · Issue date May 20, 2026	$79.99	10mg	In stock	View listing ↗
Ipamorelin3-test panel COA verified Freedom Diagnostics · Report date May 8, 2026	$64.99	10mg	In stock	View listing ↗
Glutathione6-test panel COA verified Freedom Diagnostics · Report date Jul 2, 2026	$73.99	1500mg	In stock	View listing ↗
SYN-1SG3-test panel COA verified Freedom Diagnostics	$72.99	10mg	In stock	View listing ↗
Sermorelin6-test panel COA verified Kovera Labs · Issue date May 29, 2026	$74.99	10mg	In stock	View listing ↗
IGF-1 LR33-test panel COA verified Freedom Diagnostics · Report date Oct 7, 2025	$78.99	1mg	In stock	View listing ↗
GHK-Cu (Copper Peptide)6-test panel COA verified Kovera Labs · Issue date May 29, 2026	$36.99	50mg	In stock	View listing ↗
Thymosin Alpha-16-test panel COA verified Kovera Labs · Issue date May 24, 2026	$74.99	10mg	In stock	View listing ↗
GLOW3-test panel COA verified Freedom Diagnostics · Report date May 8, 2026	$119.99	70mg	In stock	View listing ↗
Wolverine7-test panel COA verified Freedom Diagnostics · Report date Aug 15, 2026	$99.99	10mg	In stock	View listing ↗
Wolverine7-test panel COA verified Freedom Diagnostics · Report date Jul 25, 2026	$99.99	20mg	In stock	View listing ↗
AOD-96046-test panel COA verified Kovera Labs · Issue date May 29, 2026	$59.99	5mg	In stock	View listing ↗
Epithalon (Epitalon)3-test panel COA verified Kovera Labs · Issue date May 24, 2026	$43.99	10mg	In stock	View listing ↗
Epithalon (Epitalon)6-test panel COA verified Freedom Diagnostics · Report date Jul 15, 2026	$139.99	50mg	In stock	View listing ↗
MitoSS-317-test panel COA verified ILS Laboratories	$162.99	50mg	In stock	View listing ↗
MitoSS-316-test panel COA verified Kovera Labs · Issue date May 20, 2026	$57.99	10mg	In stock	View listing ↗
Melanotan-2 (MT-2)3-test panel COA verified Freedom Diagnostics	$34.99	10mg	In stock	View listing ↗
PT-141 (Bremelanotide)7-test panel COA verified Freedom Diagnostics · Report date Jul 25, 2026	$52.99	10mg	In stock	View listing ↗
5-Amino-1MQ1-test panel COA verified Freedom Diagnostics · Report date Sep 12, 2025	$74.99	50mg	In stock	View listing ↗
5-Amino-1MQNo exact COA available	$36.99	10mg	In stock	View listing ↗
DSIP (Delta Sleep-Inducing Peptide)3-test panel COA verified Freedom Diagnostics · Report date Dec 27, 2025	$47.99	10mg	In stock	View listing ↗
DSIP (Delta Sleep-Inducing Peptide)2-test panel COA verified Freedom Diagnostics · Report date Sep 12, 2025	$36.99	5mg	In stock	View listing ↗
KPV3-test panel COA verified Freedom Diagnostics · Report date May 8, 2026	$57.99	10mg	In stock	View listing ↗
ARA-290 (Cibinetide)6-test panel COA verified Freedom Diagnostics · Report date Jul 15, 2026	$69.99	10mg	In stock	View listing ↗
CartalaxNo exact COA available	$54.99	20mg	In stock	View listing ↗
CJC-1295 No DAC + Ipamorelin3-test panel COA verified Kovera Labs · Issue date May 24, 2026	$63.99	10mg	In stock	View listing ↗
CortagenNo exact COA available	$59.99	20mg	In stock	View listing ↗
CagrilintideOut of stock3-test panel COA verified Freedom Diagnostics · Report date Sep 12, 2025	$62.99	5mg	Out of stock	View listing ↗
KLOW ProtocolOut of stock7-test panel COA verified Freedom Diagnostics · Report date Aug 15, 2026	$129.99	80mg	Out of stock	View listing ↗

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Market prices collected Nov 1, 2026

Market listing prices

Five cheapest in-stock package prices per compound across every tracked vendor — not just Synthesis Peptides.

BPC-157 listing prices

31 collected daysOct 2, 2026 – Nov 1, 2026

Latest Nov 1, 2026$15.83$15.99$18.00$18.69$19.99

31 collected days and prices

Cheapest in-stock listing prices by collected day
Date	Rank 1	Rank 2	Rank 3	Rank 4	Rank 5
Nov 1, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 31, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 30, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 29, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 28, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 27, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 26, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 25, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 24, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 23, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 22, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 21, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 20, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 19, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 18, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 17, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 16, 2026	$15.99	$18.00	$18.69	$19.99	$21.99
Oct 15, 2026	$15.99	$18.00	$18.69	$21.99	$21.99
Oct 14, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 13, 2026	$15.83	$15.99	$18.00	$18.69	$19.99
Oct 12, 2026	$15.83	$15.99	$18.69	$19.82	$19.99
Oct 11, 2026	$15.83	$15.99	$18.69	$19.82	$19.99
Oct 10, 2026	$15.83	$15.99	$18.69	$19.82	$19.99
Oct 9, 2026	$15.83	$15.99	$18.69	$19.99	$21.99
Oct 8, 2026	$15.83	$15.99	$18.69	$19.99	$20.00
Oct 7, 2026	$15.99	$18.69	$19.99	$21.99	$21.99
Oct 6, 2026	$15.99	$18.69	$19.99	$21.99	$21.99
Oct 5, 2026	$15.99	$18.69	$19.99	$21.99	$22.44
Oct 4, 2026	$15.99	$18.69	$19.99	$21.99	$22.44
Oct 3, 2026	$15.99	$18.69	$19.99	$19.99	$21.99
Oct 2, 2026	$15.99	$18.69	$19.99	$19.99	$21.99

Vendors in the cheapest five

5 / 10

Vendors that appeared in the five cheapest listings, with collected days and the last top-five package price.
Vendor	Days in five	Last top-five package
MS Peptides	31	$15.99 Nov 1, 2026
Pure Peptides UK	31	$18.69 Nov 1, 2026
Peptide Giants	30	$19.99 Nov 1, 2026
ResearchPeps	20	$18.00 Nov 1, 2026
Corix Labs	15	$15.83 Nov 1, 2026

Top 5 of 10 vendors that reached the cheapest five

TB-500 listing prices

31 collected daysOct 2, 2026 – Nov 1, 2026

Latest Nov 1, 2026$21.38$24.79$24.99$25.00$25.08

31 collected days and prices

Cheapest in-stock listing prices by collected day
Date	Rank 1	Rank 2	Rank 3	Rank 4	Rank 5
Nov 1, 2026	$21.38	$24.79	$24.99	$25.00	$25.08
Oct 31, 2026	$20.89	$21.38	$24.79	$24.99	$25.00
Oct 30, 2026	$20.89	$21.38	$24.79	$24.99	$25.00
Oct 29, 2026	$20.89	$21.38	$24.79	$24.99	$25.00
Oct 28, 2026	$20.89	$21.38	$24.99	$25.00	$25.08
Oct 27, 2026	$21.38	$24.69	$24.99	$25.00	$25.08
Oct 26, 2026	$21.38	$24.99	$25.00	$25.00	$25.08
Oct 25, 2026	$21.38	$24.99	$25.00	$25.08	$26.59
Oct 24, 2026	$21.38	$24.99	$25.00	$26.72	$27.89
Oct 23, 2026	$12.00	$21.38	$24.99	$25.00	$25.00
Oct 22, 2026	$12.00	$21.38	$24.99	$25.00	$25.00
Oct 21, 2026	$12.00	$21.38	$24.99	$25.00	$26.59
Oct 20, 2026	$12.00	$21.38	$24.99	$25.00	$26.59
Oct 19, 2026	$12.00	$21.38	$22.79	$24.99	$25.00
Oct 18, 2026	$12.00	$21.38	$22.79	$24.99	$25.00
Oct 17, 2026	$12.00	$21.38	$22.79	$24.99	$25.00
Oct 16, 2026	$12.00	$21.38	$24.70	$24.99	$25.00
Oct 15, 2026	$12.00	$21.38	$24.70	$24.99	$25.00
Oct 14, 2026	$12.00	$21.38	$24.70	$24.99	$25.00
Oct 13, 2026	$12.00	$21.38	$24.70	$24.99	$25.00
Oct 12, 2026	$12.00	$21.38	$24.70	$25.00	$25.00
Oct 11, 2026	$12.00	$21.38	$24.70	$25.00	$25.00
Oct 10, 2026	$12.00	$21.38	$24.70	$25.00	$25.08
Oct 9, 2026	$12.00	$21.38	$25.00	$25.08	$26.72
Oct 8, 2026	$12.00	$21.38	$25.00	$25.08	$26.72
Oct 7, 2026	$12.00	$21.38	$25.00	$26.72	$27.89
Oct 6, 2026	$21.38	$26.72	$27.89	$28.80	$29.99
Oct 5, 2026	$21.38	$25.00	$26.72	$27.89	$28.00
Oct 4, 2026	$17.68	$21.38	$24.98	$25.00	$26.72
Oct 3, 2026	$15.75	$21.38	$22.25	$25.00	$26.72
Oct 2, 2026	$15.75	$21.38	$22.25	$25.00	$26.72

Vendors in the cheapest five

5 / 15

Vendors that appeared in the five cheapest listings, with collected days and the last top-five package price.
Vendor	Days in five	Last top-five package
Pure Peptides UK	31	$21.38 Nov 1, 2026
ResearchPeps	20	$24.99 Nov 1, 2026
Novaglo Research	17	$12.00 last in top five Oct 23, 2026
Nura Peptide	14	$25.00 Nov 1, 2026
Kensington Labs	9	$26.72 last in top five Oct 24, 2026

Top 5 of 15 vendors that reached the cheapest five

MOTS-c listing prices

31 collected daysOct 2, 2026 – Nov 1, 2026

Latest Nov 1, 2026$20.00$21.25$21.50$23.99$24.99

31 collected days and prices

Cheapest in-stock listing prices by collected day
Date	Rank 1	Rank 2	Rank 3	Rank 4	Rank 5
Nov 1, 2026	$20.00	$21.25	$21.50	$23.99	$24.99
Oct 31, 2026	$20.00	$21.50	$23.99	$24.99	$25.00
Oct 30, 2026	$20.00	$21.50	$23.99	$24.99	$25.00
Oct 29, 2026	$21.50	$23.99	$24.00	$24.99	$25.00
Oct 28, 2026	$21.50	$23.99	$24.00	$24.99	$25.00
Oct 27, 2026	$23.99	$24.00	$24.99	$25.00	$26.06
Oct 26, 2026	$21.50	$24.00	$24.99	$25.00	$25.00
Oct 25, 2026	$20.31	$21.50	$24.00	$24.99	$25.00
Oct 24, 2026	$20.31	$24.00	$24.99	$25.00	$25.00
Oct 23, 2026	$20.31	$24.00	$24.99	$25.00	$25.00
Oct 22, 2026	$20.31	$24.00	$24.99	$25.00	$25.00
Oct 21, 2026	$20.31	$24.00	$24.99	$25.00	$26.06
Oct 20, 2026	$20.31	$24.00	$24.99	$25.00	$26.06
Oct 19, 2026	$20.31	$22.79	$24.00	$24.99	$25.00
Oct 18, 2026	$22.79	$24.99	$25.00	$26.06	$27.35
Oct 17, 2026	$22.79	$24.99	$25.00	$26.06	$27.35
Oct 16, 2026	$24.99	$25.00	$26.06	$27.35	$27.59
Oct 15, 2026	$24.99	$25.00	$26.06	$27.35	$27.99
Oct 14, 2026	$24.99	$25.00	$26.06	$26.40	$27.35
Oct 13, 2026	$24.99	$25.00	$26.06	$26.40	$27.35
Oct 12, 2026	$24.99	$25.00	$26.00	$26.06	$26.40
Oct 11, 2026	$24.99	$25.00	$26.00	$26.06	$26.40
Oct 10, 2026	$24.99	$25.00	$26.00	$26.06	$26.40
Oct 9, 2026	$24.99	$25.00	$26.00	$26.06	$26.40
Oct 8, 2026	$24.99	$25.00	$26.06	$26.40	$27.35
Oct 7, 2026	$25.00	$26.06	$27.35	$27.66	$28.00
Oct 6, 2026	$25.00	$26.06	$27.35	$27.66	$28.00
Oct 5, 2026	$26.00	$26.06	$26.99	$27.35	$27.66
Oct 4, 2026	$26.00	$26.06	$26.99	$27.35	$27.66
Oct 3, 2026	$26.00	$26.06	$27.35	$27.66	$28.00
Oct 2, 2026	$26.00	$26.06	$27.35	$27.66	$28.38

Vendors in the cheapest five

5 / 17

Vendors that appeared in the five cheapest listings, with collected days and the last top-five package price.
Vendor	Days in five	Last top-five package
TrustedPeps	26	$25.00 last in top five Oct 31, 2026
Studz Peptides	25	$24.99 Nov 1, 2026
Lost Coast Aminos	24	$20.00 Nov 1, 2026 -23.1%
Pure Peptides UK	20	$26.06 last in top five Oct 27, 2026
Anglo Peptides	13	$27.35 last in top five Oct 18, 2026

Top 5 of 17 vendors that reached the cheapest five

Frequently asked questions

Is Synthesis Peptides legit?: We rate Synthesis Peptides 9/10. The October 4 archive retains 105 complete reports:104 matches to lab records and one new Vanguard B12 no-match. Four historical Freedom reports were newly verified; all 100 prior IDs and lab states remain preserved. The September 17 review found 85 exact product matches. The store publishes clear US shipping terms, accepts major cards and PayPal, and offers a confirmed 15% off with code PEPTIDEPRICES. Affiliate links never affect the score.
Does Synthesis Peptides have a coupon code?: Code PEPTIDEPRICES gives customers 15% off. Use the PeptidePrices referral link on this page and confirm the discount at checkout.
Where does Synthesis Peptides ship?: Synthesis Peptides ships to United States only. Orders placed before 12pm PST ship the same business day. The store uses USPS and UPS and states 1–3 business-day delivery after dispatch. Shipping is free over $250. All sales are final. Defective or incorrect items require notice within 72 hours of delivery.
Does Synthesis Peptides publish COAs?: COA verified. 104 of 105 reports on file match the lab's own records and name this vendor.
What do customer reviews say about Synthesis Peptides?: Trustpilot showed 4.9/5 from 123 reviews of this store when we last checked. Reviews describe service and delivery, not lab results.
What are alternatives to Synthesis Peptides?: The public vendors closest to Synthesis Peptides' 9/10 evidence score are Studz Peptides (9/10), Validated Peptides (9/10), and Rivn Peptides (9/10).
What is the Synthesis Peptides coupon code?: Use confirmed code PEPTIDEPRICES for 15% off.
Where is Synthesis Peptides located?: The storefront publishes 3009 Hawksdale Dr, Unit #153, Las Vegas, NV 89134, and identifies the business as veteran-owned. It ships inside the United States only.