Peptides Source Review
Scored 7.17/10 on the published Peptide Source Review formula: lab credibility, shipping, pricing, operating history, and transparency.
- COAs on file
- 26
COAs on file
- Confirmed at the lab
- 25
Confirmed at the lab
- Products
- 26
Products
- Labs
- 2
Labs
7.17/ 10
Last scored
No testing cap
- Lab credibility and recency55%7.6 (show how this was scored)
- Shipping and refund20%7.0 (show how this was scored)
- Pricing15%8.3 (show how this was scored)
- Operating history5%3.8 (show how this was scored)
- Business transparency5%3.0 (show how this was scored)
Weights are fixed for every vendor. Select a row to see how it was scored.
Is Peptides Source legit?
Peptides Source scores 7.17 out of 10 (Strong, #29 of 100) as of November 6, 2026 and passes our testing gate: all 26 products we score carry a certificate, 25 confirmed with the issuing lab (labs we grade A to A-). Its strongest area is pricing (8.3/10) and its weakest is transparency (3.0/10); its operating history on record covers over two years. We also record that some of its certificates were issued to another business.
On lab evidence, the heaviest-weighted factor, Peptides Source has independently verified third-party COAs, with COA work on record from Freedom Diagnostics Testing, Bioviridian. Its lowest price per milligram in our data is on GHK-Cu (see the table below).
How this score was calculated
Every point below follows the published tables in our methodology, with the policy wording we scored and a link to where we read it. Evidence last checked October 22, 2026. Lab credibility is worked product by product from the certificates on file.
Lab credibility7.6/10
Each carried product (lab supplies excluded) is scored from the certificate on file for it, on the published lab rubric: 3 for a published certificate, then points for the laboratory, the verification key, the tests on the certificate and its purity, held to 0 to 10. A certificate that is self-issued, names no laboratory, or comes from a laboratory whose independence is not established scores a flat 2.0; a product with no certificate, a certificate the laboratory’s own record fails, or a posted copy that differs materially from the laboratory’s copy scores 0. Calculated on , the day this page was built; the date each certificate was tested is shown on its row.
- BPC-1578.5
Certificate from Bioviridian, tier A- · tested 2026-06-30
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Bioviridian)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.8% (99.7% or higher)
- TB-5008.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-10-27
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.87% (99.7% or higher)
- −0.082Age: more than 12 months old, so 0.25 × 8.5 ÷ the weighted product count comes off the mean (AGE below)
- GHK-Cu8.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-11-05
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.74% (99.7% or higher)
- −0.082Age: more than 12 months old, so 0.25 × 8.5 ÷ the weighted product count comes off the mean (AGE below)
- CJC-12958.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-11-22
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.739% (99.7% or higher)
- Ipamorelin8.5
Certificate from Bioviridian, tier A- · tested 2026-09-06
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Bioviridian)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.82% (99.7% or higher)
- Semax8.5
Certificate from Bioviridian, tier A- · tested 2026-06-12
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Bioviridian)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.8% (99.7% or higher)
- Selank8.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-11-22
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.786% (99.7% or higher)
- Melanotan-28.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-11-22
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.587% (99.0% up to but not including 99.7%)
- Sermorelin8.5
Certificate from Bioviridian, tier A- · tested 2026-06-12
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Bioviridian)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.9% (99.7% or higher)
- Tesamorelin9.0
Certificate from Bioviridian, tier A- · tested 2026-04-06
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Bioviridian)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Endotoxin test
- +0.5Purity 99.8% (99.7% or higher)
- Retatrutide8.5
Certificate from Bioviridian, tier A- · tested 2026-08-01
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Bioviridian)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.82% (99.7% or higher)
- Tirzepatide8.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-11-22
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.983% (99.7% or higher)
- Semaglutide8.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-11-22
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.927% (99.7% or higher)
- PT-1419.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-11-05
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Endotoxin test
- +0.5Purity 99.769% (99.7% or higher)
- −0.087Age: more than 12 months old, so 0.25 × 9.0 ÷ the weighted product count comes off the mean (AGE below)
- AOD-96048.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-01-24
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.928% (99.7% or higher)
- 5-Amino-1MQ8.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-03-12
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.592% (99.0% up to but not including 99.7%)
- IGF-1 LR38.5
Certificate from Bioviridian, tier A- · tested 2026-09-06
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Bioviridian)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.78% (99.7% or higher)
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-11-05
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- −1.5Purity 98.65% (97.0% up to but not including 99.0%)
- −0.063Age: more than 12 months old, so 0.25 × 6.5 ÷ the weighted product count comes off the mean (AGE below)
- GHRP-28.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-11-22
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.144% (99.0% up to but not including 99.7%)
- GHRP-68.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-11-22
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.011% (99.0% up to but not including 99.7%)
- Hexarelin8.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-11-05
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.633% (99.0% up to but not including 99.7%)
- −0.077Age: more than 12 months old, so 0.25 × 8.0 ÷ the weighted product count comes off the mean (AGE below)
- Cagrilintide8.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-03-12
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.961% (99.7% or higher)
- KLOW8.5
Certificate from Bioviridian, tier A- · tested 2026-09-06
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Bioviridian)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.79% (99.7% or higher)
- GLOW6.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2025-10-27
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- 0.0Key printed but not found at the laboratory (no confirmed points; no other deduction)
- 0.0Purity 99.559% (99.0% up to but not including 99.7%)
- −0.063Age: more than 12 months old, so 0.25 × 6.5 ÷ the weighted product count comes off the mean (AGE below)
- MOTS-c8.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-08-17
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A (Freedom Diagnostics Testing)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.78% (99.7% or higher)
- Epitalon8.5
Certificate from Bioviridian, tier A- · tested 2025-12-23
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Bioviridian)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.8% (99.7% or higher)
Mean of 26 products: 215.5 ÷ 26 = 8.288.
- −0.452AGE Certificates older than 12 months: 6 scored certificate(s) older than 12 months: tb-500 2025-10-27, ghk-cu 2025-11-05, pt-141 2025-11-05, hgh-frag-176-191 2025-11-05, hexarelin 2025-11-05, glow 2025-10-27
- −0.20SUPPLIER Certificates ordered by a supplier or another client (cap −0.5): some product pages present certificates issued to other businesses: Accumark ENVL-HT9T to NxGen Bio Med (GHK-Cu/KPV), Freedom 2503040029 to P4R Wholesale, LLC, and an MZ Biolabs report to SW Peptides
8.288 − 0.652 = 7.637, rounded to 0.1: 7.6/10.
Testing gate: 25 of 26 products have a certificate from a directory laboratory (not tier D, not self-issued) with the key confirmed at the laboratory. That is at least half, so the vendor counts as third-party tested and no cap applies.
Shipping and refunds7.0/10
- +1
Returns and refunds
we cannot accept returns. In the rare occasion that your order arrives with missing, incorrect or damaged items, please email ... for assistance. / in the event that the order is shipped incorrectly ... We will issue a replacement of your original order.
peptidessource.com (opens in new tab) source 2 (opens in new tab)checked
- +1
Lost or damaged parcels
Replacement or refund requests may be reviewed on a case-by-case basis. ... PeptidesSource is not responsible for carrier delays, weather delays, incorrect addresses, lost packages, stolen packages
- +1.5
Dispatch time
Orders placed, paid, and processed before 12 noon ET typically ship out the same business day.
- +1
Tracking on all orders
Orders are securely packaged and shipped quickly across the USA with tracking provided.
- +1.5
Payment you can dispute
We accept payments with all major credit cards. We also accept Venmo, Zelle, Cashapp and crypto.
- +1
Shipping rates published
FREE shipping with orders over [price] (Grand Total)
Total +7: 7.0/10.
Pricing8.3/10
We compared Peptides Source’s current single-vial prices on 26 products, each matched to the same product and milligrams per vial, with the median price of the other vendors. Its typical price (the median ratio across those products) is 17% below the market median (ratio 0.83), which the published scale maps to 8.3/10. checked
Operating history3.8/10
Counted from February 17, 2024, the earliest dated evidence of this business operating: 2.7 years as of October 22, 2026, which the published table maps to 3.8/10.
Store domain peptidessource.com registered 2024-02-17 (RDAP); the captures before the first store capture (2024-04-15 and 2024-08-04) only redirect to the site itself, nothing parked or for sale, so the domain date counts. The site names no operating company.
- 2024-02-17 Domain registration: peptidessource.com registration rdap.org (opens in new tab)
- 2024-04-15 Archived copy: 302 to the same site, not parked web.archive.org (opens in new tab)
- 2024-08-14 Dated public mention: buyer question about ordering reddit.com (opens in new tab)
- 2024-09-19 Archived copy: store with prices web.archive.org (opens in new tab)
Transparency3.0/10
- 0
Legal entity named
No legal entity on terms, privacy, about, contact or footer: terms say only 'PeptidesSource owns and operates the website'; footer 'Copyright 2026 PEPTIDES SOURCE'
- 0
Business address
Footer and every page read show only 'Philadelphia, PA 19102' (no street). The PMB street address in addresses.json (stored About-page note) is no longer published on /about-us/.
- +1
- 0
Named owner or staff
No owner or staff named on about, contact, terms or privacy
- +1
Dated terms with a governing law
'Last Updated: May 29, 2026'; 'governed by the laws of the United States and the applicable laws of the state in which PeptidesSource operates'
- +1.5
Testing lab named, certificates published
Certificates published per batch; labs named: 'Bioviridian ... Freedom Diagnostics ... Accumark Labs ... Vanguard Laboratory'
- −0.5
GLP products sold only under code names
GLP products sold as 'GLP-1 (SMA) 10mg', 'GLP-2 (TRZ) 10mg', 'GLP-3 (RTA) 10mg'; none of the three pages names semaglutide, tirzepatide or retatrutide
Total +3: 3.0/10.
Shop Peptides Source
- Rated 7.17/10 · Strong
- 25 COAs confirmed at the issuing lab
- Best value: GHK-Cu at $0.70/mg
Affiliate link: we may earn a commission if you buy. It never affects the score or rank.
Current Peptides Source offers
Volume Pricing: Up to 30% Off, Applied Automatically
Peptides Source homepage: The More Units You Order, The Lower the Unit Price. Tiered pricing is built into every product page. The discount applies automatically the moment you change the quantity: no code, no account tier, no minimum order value. Tiers are 1 to 2 units at list price, 15% off 3 to 5 units, 20% off 6 to 9 units, and 30% off 10 or more.
Audit history and why the rating changed
We re-audit vendors against their live COAs and site. Here is what most recently moved this rating, and why.
See the full score history and chart
- Most recent audit · 7.33to7.17
Lab score recomputed under the published rule on 6 November 2026: lab 7.9 to 7.6.
- Audit · 7.32to7.33
Market medians updated after Stack Research was added pricing 8.2 to 8.3.
- Audit · 7.33to7.32
Market medians updated after Bluum Peptides was added pricing 8.3 to 8.2.
Earlier audits (14)
- Audit · 7.44to7.33
Lab score recalculated on 30 October 2026 under rule A6 (certificate age): the TB-500 and GLOW certificates, tested on 27 October 2025, became older than 12 months on 28 October 2026, and each certificate older than 12 months counts for a quarter less. Lab 8.1 to 7.9.
- Audit · 7.43to7.44
Pricing recomputed on 27 October 2026: listings added for a newly reviewed vendor (Peptide Pro) moved the market median for the same products pricing 8.2 to 8.3.
- Audit · 7.46to7.43
Pricing recomputed on 24 October 2026 after Bionova Peptides' first-review prices were recorded; other vendors move only through the market medians: pricing 8.4 to 8.2.
- Audit · 7.44to7.46
Pricing recomputed on 24 October 2026: listings added for newly reviewed vendors moved the market median for the same products: pricing 8.3 to 8.4.
- Audit · 7.55to7.44
Certificates issued to other businesses (NxGen Bio Med, P4R Wholesale, SW Peptides) appear on some product pages, confirmed live on 22 October 2026: a fixed supplier deduction under our published lab rule. Lab 8.3 to 8.1.
- Audit · 7.53to7.55
Operating history re-checked on 22 October 2026 under the published rule (earliest dated evidence of the business, including a never-parked store domain and the named operating company, looked up for every vendor): operating history 3.4 to 3.8.
- Audit · 7.48to7.53
Claim deductions re-checked on 22 October 2026 under the published rule that a claim deduction applies only where a site claim is contradicted by what its certificates show, never for products merely lacking a certificate. Lab 8.2 to 8.3.
- Audit · 7.43to7.48
Re-scored on 22 October 2026 under the published rulebook, which now gives one rule for each judgement call and applies it to every vendor: transparency 2.0 to 3.0.
- Audit · 7.26to7.43
Re-scored on 22 October 2026 under version 2 of our published rules. The deduction for verification codes the laboratory could not find was retired: each such certificate now keeps its points for the printed key and earns none for confirmation, and codes on certificates we do not score no longer count. Lab 7.9 to 8.2. Score 7.26 to 7.43.
- Audit · 7.69to7.26
Re-scored on 22 October 2026 under our published rubric for shipping, pricing, operating history and transparency, applied to every vendor the same day: prices re-read from the vendor's site and matched by milligrams per vial, operating history from the earliest dated evidence of the business, and policies scored item by item. shipping and refunds 8.5 to 7.0, transparency 4.6 to 2.0.
- Audit · 7.80to7.69
Re-scored on 22 October 2026 under our published rubric for shipping, pricing, operating history and transparency, applied to every vendor the same day: prices re-read from the vendor's site and matched by milligrams per vial, operating history from the earliest dated evidence of the business, and policies scored item by item. pricing 9.0 to 8.3, operating history 3.6 to 3.4.
- Audit · 7.75to7.80
Lab score recalculated on 22 October 2026 under the uniform published rubric applied to every vendor: every listed product was rescored on the same fixed certificate points, with fixed deductions for verification codes the issuing laboratory could not find and site statements about testing that the certificates do not bear out. Lab 7.8 to 7.9.
- Audit · 7.38to7.75
Lab evidence re-checked on 20 October 2026 under our coverage rule, which counts a listed product with no published certificate as zero in the lab average. Certificates cover 26 of the 26 products we list that the vendor offers for sale. Lab 7.1 to 7.8.
- Audit · 7.49to7.38
Tenure 5.9 to 3.6. The domain was registered in February 2024, about two and a half years ago, and no founding year is stated, so the operating-history score was aligned to the domain age. The public notes were also rewritten to match the July 2026 audit; the lab score is unchanged.
Editor’s notes
Re-audited 2026-07-23 from the vendor's certificate library (account required). Current certificates are from Freedom Diagnostics Testing and name the company as client; the BPC-157 certificate replaces an earlier key, Pept2511030106, and the current printed search code, Pep2511030119, did not resolve at the laboratory's search on 22 October 2026. They cover identity and purity, some with net content; two of the 26 certificates, PT-141 and tesamorelin, also include endotoxin, and none include sterility or heavy metals. Older 2022 images showing another vendor's branding remain in the media library but are not the certificates displayed. At that July check, several listed products had no certificate (PT-141, IGF-1 LR3, 5-Amino-1MQ, Hexarelin, MOTS-c); by October 2026 each had one. The catalog sits behind a registration form that asks for age confirmation and research-only consent. Orders ship by UPS or USPS with a noon Eastern same-day cutoff; returns only for wrong items. Payment options include major cards, peer-to-peer apps and crypto. An earlier About page named three co-founders and a Philadelphia mailbox address; when we checked on 22 October 2026, the site named no owners or staff and gave only a Philadelphia ZIP code with no street address. No founding year is stated; the domain was registered in February 2024, and the operating-history score runs from that February 2024 domain-registration date. Certificates from Freedom Diagnostics Testing and Bioviridian cover 26 of the 26 products we list, most confirmed on the laboratories' own lookups in October 2026, though eight printed codes did not resolve at the laboratory, 13 of the 26 do not tie to a batch or lot number, and some product pages show certificates issued to other businesses.
Peptides Source COAs and lab test results
One row per product: the certificate on file and how the lab rule reads it, the laboratory that issued it and its tier, the date it was tested, the purity it reports, and the lowest price per milligram we recorded (per IU or mL where a product is sold that way).
BioviridianTier A-tested
- Purity
- 99.8%
- Price per mg
- $4.00$60.00 / 15mgbest of 4 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.87%
- Price per mg
- $7.00$35.00 / 5mgbest of 2 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.74%
- Price per mg
- $0.70$70.00 / 100mgbest of 2 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.739%
- Price per mg
- $12.00$60.00 / 5mgbest of 2 sizes
BioviridianTier A-tested
- Purity
- 99.82%
- Price per mg
- $6.50$65.00 / 10mgbest of 2 sizes
BioviridianTier A-tested
- Purity
- 99.8%
- Price per mg
- $5.00$50.00 / 10mgbest of 2 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.786%
- Price per mg
- $3.75$75.00 / 20mgbest of 3 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.587%
- Price per mg
- $4.00$40.00 / 10mg
BioviridianTier A-tested
- Purity
- 99.9%
- Price per mg
- $5.00$25.00 / 5mgbest of 2 sizes
BioviridianTier A-tested
- Purity
- 99.8%
- Price per mg
- $6.25$200.00 / 32mgbest of 4 sizes
BioviridianTier A-tested
- Purity
- 99.82%
- Price per mg
- $4.00$400.00 / 100mgbest of 9 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.983%
- Price per mg
- $2.50$300.00 / 120mgbest of 10 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.927%
- Price per mg
- $3.83$115.00 / 30mgbest of 5 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.769%
- Price per mg
- $5.00$50.00 / 10mg
Freedom Diagnostics TestingTier Atested
- Purity
- 99.928%
- Price per mg
- $7.00$70.00 / 10mgbest of 2 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.592%
- Price per mg
- $1.30$65.00 / 50mgbest of 3 sizes
BioviridianTier A-tested
- Purity
- 99.78%
- Price per mg
- $80.00$80.00 / 1mg
Freedom Diagnostics TestingTier Atested
- Purity
- 98.65%
- Price per mg
- $6.00$30.00 / 5mgbest of 2 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.144%
- Price per mg
- $3.50$35.00 / 10mgbest of 2 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.011%
- Price per mg
- $3.50$35.00 / 10mgbest of 2 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.633%
- Price per mg
- $8.00$40.00 / 5mgbest of 3 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.961%
- Price per mg
- $9.00$90.00 / 10mgbest of 2 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.559%
- Price per mg
- $1.71$120.00 / 70mg
Freedom Diagnostics TestingTier Atested
- Purity
- 99.78%
- Price per mg
- $3.33$100.00 / 30mgbest of 5 sizes
BioviridianTier A-tested
- Purity
- 99.8%
- Price per mg
- $1.30$65.00 / 50mgbest of 3 sizes
Learn more about what Peptides Source carries
Peptides Source: Frequently Asked Questions
Is Peptides Source legit?
Peptides Source scores 7.17 out of 10 (Strong, #29 of 100) as of November 6, 2026 and passes our testing gate: all 26 products we score carry a certificate, 25 confirmed with the issuing lab (labs we grade A to A-). Its strongest area is pricing (8.3/10) and its weakest is transparency (3.0/10); its operating history on record covers over two years. We also record that some of its certificates were issued to another business.
Is there a Peptides Source promo code, coupon code, or discount code?
We do not have a verified Peptides Source promo code or coupon code right now. When Peptides Source runs a sale or issues a discount code, we post it here and on our promos page, so bookmark this page for the latest Peptides Source discount.
Does Peptides Source use third-party lab testing?
Yes. We have independently verified third-party COA evidence for this vendor. Laboratories on the certificates we hold: Freedom Diagnostics Testing, Bioviridian.
Where can I see Peptides Source's COAs?
In the "Peptides Source COAs and lab test results" table on this page. We hold 26 certificates for Peptides Source, covering 26 of the 26 products we track, issued by 2 laboratories (Freedom Diagnostics Testing, Bioviridian). 25 products' certificates were confirmed at the issuing laboratory itself. Each row links the certificate, its lab, its test date and the purity it reports.
What peptides does Peptides Source carry?
Peptides Source carries BPC-157, TB-500, GHK-Cu, CJC-1295, Ipamorelin, Semax, Selank, Melanotan-2, and 18 more. Current per-milligram pricing, COA links, and verification keys for each are in the comparison table on this page.
Is the Peptides Source review on Peptide Source Review affected by affiliate status?
No. All affiliate relationships are publicly disclosed and never change a vendor's score, rank, or gate status. Our scoring formula is published in full and applied identically to every vendor.
Want to understand how this score was built?
Read the full methodology or the editorial integrity policy. Disclosure: the link below is an affiliate link; it never affects the score.
Peptides Source7.17Strong
25 confirmed at the labAffiliate link