Prime Peptides Review
Scored 7.94/10 on the published Peptide Source Review formula: lab credibility, shipping, pricing, operating history, and transparency.
- COAs on file
- 21
COAs on file
- Confirmed at the lab
- 20
Confirmed at the lab
- Products
- 21
Products
- Labs
- 5
Labs
7.94/ 10
Last scored
No testing cap
- Lab credibility and recency55%8.6 (show how this was scored)
- Shipping and refund20%9.0 (show how this was scored)
- Pricing15%6.3 (show how this was scored)
- Operating history5%3.8 (show how this was scored)
- Business transparency5%5.5 (show how this was scored)
Weights are fixed for every vendor. Select a row to see how it was scored.
Is Prime Peptides legit?
Prime Peptides scores 7.94 out of 10 (Strong, #7 of 100) as of November 3, 2026 and passes our testing gate: all 20 products we score carry a certificate, 20 confirmed with the issuing lab (labs we grade A to B+). Its strongest area is shipping and refunds (9.0/10); its weakest is operating history (3.8/10), with over two years of records.
On lab evidence, the heaviest-weighted factor, Prime Peptides has independently verified third-party COAs, with COA work on record from Freedom Diagnostics Testing, Janoshik Analytical, Bioviridian, Horizon Analytical, Kovera Labs. Its lowest price per milligram in our data is on Glutathione (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 credibility8.6/10
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-1579.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-05-12
- 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
- +0.5Endotoxin test
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- 0.0Purity 99.63% (99.0% up to but not including 99.7%)
- TB-5008.0
Certificate from Janoshik Analytical, tier B+ · tested 2026-05-26
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier B+ (Janoshik Analytical)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.521% (99.0% up to but not including 99.7%)
- GHK-Cu9.0
Certificate from Kovera Labs, tier A- · tested 2026-07-16
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Kovera Labs)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Endotoxin test
- +0.5Purity 99.782% (99.7% or higher)
- Ipamorelin9.0
Certificate from Bioviridian, tier A- · tested 2026-04-24
- 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)
- Semax8.0
Certificate from Janoshik Analytical, tier B+ · tested 2026-04-10
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier B+ (Janoshik Analytical)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.625% (99.0% up to but not including 99.7%)
- Melanotan-28.5
Certificate from Janoshik Analytical, tier B+ · tested 2026-04-28
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier B+ (Janoshik Analytical)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.967% (99.7% or higher)
- Sermorelin9.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-10-30
- 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
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- 0.0Purity 99.24% (99.0% up to but not including 99.7%)
- Tesamorelin9.0
Certificate from Freedom Diagnostics Testing, tier A · first seen 2026-10-18
- 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
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- 0.0Purity 99.4% (99.0% up to but not including 99.7%)
- Retatrutide9.5
Certificate from Freedom Diagnostics Testing, tier A · first seen 2026-10-22
- 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
- +0.5Endotoxin test
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- +0.5Purity 99.81% (99.7% or higher)
- Tirzepatide9.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-10-30
- 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
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- +0.5Purity 99.84% (99.7% or higher)
- Semaglutide9.5
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-03-25
- 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
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- +0.5Purity 99.7% (99.7% or higher)
- AOD-96048.0
Certificate from Janoshik Analytical, tier B+ · tested 2026-05-26
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier B+ (Janoshik Analytical)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0Purity 99.45% (99.0% up to but not including 99.7%)
Certificate from Freedom Diagnostics Testing, tier A · first seen 2026-09-23
- 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
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- 0.0Purity 99.41% (99.0% up to but not including 99.7%)
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-10-13
- 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
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- +0.5Purity 99.81% (99.7% or higher)
- MOTS-c9.0
Certificate from Freedom Diagnostics Testing, tier A · tested 2026-09-13
- 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
- +0.5Sterility test (USP <71> or a PCR / rapid sterility screen)
- 0.0Purity 99.12% (99.0% up to but not including 99.7%)
- Glutathione9.0
Certificate from Bioviridian, tier A- · tested 2026-04-24
- 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)
- NAD+9.0
Certificate from Horizon Analytical, tier A- · tested 2026-09-09
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier A- (Horizon Analytical)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Endotoxin test
- +0.5Purity 99.98% (99.7% or higher)
- KLOW8.0
Certificate from Janoshik Analytical, tier B+ · tested 2026-07-07
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier B+ (Janoshik Analytical)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0No purity figure on the certificate
- GLOW8.0
Certificate from Janoshik Analytical, tier B+ · tested 2026-04-28
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier B+ (Janoshik Analytical)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- 0.0No purity figure on the certificate
- Melanotan-18.5
Certificate from Janoshik Analytical, tier B+ · tested 2025-08-14
- 3.0Certificate published (base)
- +2.0Laboratory in our directory at tier B+ (Janoshik Analytical)
- +1.5Verification key printed
- +1.5Key confirmed at the laboratory's own site
- +0.5Purity 99.863% (99.7% or higher)
- −0.106Age: more than 12 months old, so 0.25 × 8.5 ÷ the weighted product count comes off the mean (AGE below)
Mean of 20 products: 176.0 ÷ 20 = 8.800.
- −0.106AGE Certificates older than 12 months: 1 scored certificate(s) older than 12 months: melanotan-1 2025-08-14
- −0.10CLAIM Claims the certificates do not support (cap −0.3): About page 'Every lot tested ... by Freedom Diagnostics' while five products show only Janoshik reports
8.800 − 0.206 = 8.594, rounded to 0.1: 8.6/10.
Testing gate: 20 of 20 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 refunds9.0/10
- +3
Returns and refunds
You can request a return within 30 days of receiving your order. ... we send you a prepaid return label.
- +1
Lost or damaged parcels
Something arrive damaged or wrong? Send us a photo ... and we'll make it right.; delivered-then-lost not covered; in-transit loss not addressed
- +1.5
Dispatch time
Orders ship from California by FedEx 2-Day Air on business days at 2 pm Pacific.
- +1
Tracking on all orders
Every order ... ships with tracking.
- +1.5
Payment you can dispute
Card payments are processed by our payment partners ... NEWSESH* GATEWAY
- +1
Shipping rates published
[price] ... FedEx 2-Day Air shipping on orders over [price].
Total +9: 9.0/10.
Pricing6.3/10
We compared Prime Peptides’s current single-vial prices on 20 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 10% above the market median (ratio 1.10), which the published scale maps to 6.3/10. checked
Operating history3.8/10
Counted from January 31, 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 primepeptides.co registered 2024-01-31 (registry WHOIS); its only capture before the 2024-04-17 store (2024-02-29, a redirect to itself) shows nothing parked or for sale, so the domain date counts. The named operator Prime Vitality, Inc. was formed in California on 2024-07-11, later.
- 2024-01-31 Domain registration: primepeptides.co registration rdap.org (opens in new tab)
- 2024-07-11 State registry: Prime Vitality Inc. (CA 6303267) formed 2024-07-11 (owner browser reading) bizfileonline.sos.ca.gov (opens in new tab)
- 2024-04-10 Dated public mention: 'Primepeptides.co' reddit.com (opens in new tab)
- 2024-04-17 Archived copy: store with prices web.archive.org (opens in new tab)
- 2024-12-10 Dated public mention: FDA warning letter MARCS-CMS 695156 to Prime Vitality, Inc. dba Prime Peptides fda.gov (opens in new tab)
Transparency5.5/10
- +2
Legal entity named
This website is operated by Prime Vitality, Inc., doing business as Prime Peptides
- +1
Business address
Prime Vitality, Inc. dba Prime Peptides, 133 E De La Guerra St, Ste 14, Santa Barbara, CA 93101
Address could not be classified; scored 1.
- +1
- 0
- +1
Dated terms with a governing law
Last updated: October 6, 2026; 'governed by the laws of the State of California'
- +1.5
Testing lab named, certificates published
Purity and identity are verified by Freedom Diagnostics, an independent US lab
primepeptides.co (opens in new tab) source 2 (opens in new tab)checked
- −1
FDA warning letter in the last three years
Prime Vitality, Inc. dba Prime Peptides, warning letter 695156, December 10, 2024
fda.gov (opens in new tab)checked
Total +5.5: 5.5/10.
- Research content such as calculators or protocol articles is not scored (ruling of 22 October 2026); the first-pass deduction for it was not applied.
Shop Prime Peptides
- Rated 7.94/10 · Strong
- 20 COAs confirmed at the issuing lab
- Best value: Glutathione at $0.05/mg
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 · 8.05to7.94
Market medians updated on 3 November 2026 after the Prime Peptides re-check added priced listings: pricing 7.0 to 6.3.
- Audit · 8.10to8.05
Lab evidence re-checked on 3 November 2026. Seven products the company sells were missing from our listings and now count under our coverage rule (the CJC-1295/ipamorelin blend, MOTS-c, NAD+, glutathione, melanotan I, KLOW and GLOW); each has a certificate confirmed at the issuing laboratory, but the KLOW and GLOW reports carry no purity figure and the only melanotan I report is more than 12 months old. Sermorelin and tirzepatide are now scored from their newest certificates. Lab 8.7 to 8.6.
- Audit · 8.15to8.10
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 6.5 to 5.5.
Earlier audits (4)
- Audit · 8.00to8.15
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 9.0, pricing 7.2 to 7.0, transparency 5.0 to 6.5. Note added 22 October 2026: a score on this entry was corrected from 8.14 to 8.15; it had been rounded down instead of half up.
- Audit · 7.67to8.00
Janoshik certificates confirmed on 22 October 2026 at the laboratory's own verification site, so each confirmed report now earns the key-confirmed credit under our published lab rule. Lab 8.1 to 8.7.
- Audit · 7.62to7.67
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 site statements about testing that the certificates do not bear out. Lab 8.0 to 8.1.
- Audit · 7.00to7.62
Re-audited 2026-10-18 from the live site, replacing the May 2026 seed score, which was based on cached snippets because the site then blocked us. Lab 6.96 to 8.0: 17 Freedom Diagnostics certificates with endotoxin testing were found at the laboratory (16 vendor files opened and matched), and three Kovera reports and four Bioviridian reports all matched at the laboratories, held back by about half the catalogue relying on Janoshik reports we cannot check. Shipping stays at 8.5: weekday FedEx 2-Day Air and 30-day returns on unopened items with a prepaid label. Pricing 8.5 to 7.2: live standard prices measured at about the market median. Tenure 2.0 to 3.7: the domain dates from January 2024. Transparency 2.0 to 5.0: the operator, addresses, phone and governing law are now published, weighed against the December 2024 FDA warning letter over products it still sells and a coded name for tirzepatide.
Editor’s notes
As of our 18 October 2026 audit, Prime Peptides publishes a searchable certificate library on its testing page, matched to lot numbers printed on the vial. Its newest certificates, from Freedom Diagnostics, cover identity, purity and measured content plus an endotoxin test and a microbial screen, dated June to October 2026; all 17 were found at the laboratory, and the 16 vendor files we could open match exactly. Further reports from Kovera Labs and Bioviridian also checked out at those laboratories. About half the catalogue, including TB-500, semax, sermorelin, melanotan II, AOD-9604 and the Selank/Semax, KLOW and GLOW blends, rests on Janoshik reports; on 22 October 2026 we confirmed the reports for the five of those we list (TB-500, semax, sermorelin, melanotan II and AOD-9604) at Janoshik's own verification site. The Wolverine and CJC-1295/Ipamorelin blends carry Freedom certificates confirmed at the laboratory. Purity on current lots runs from 99.29% to 99.97%. Orders ship from Santa Barbara by FedEx 2-Day Air on weekdays, with free shipping above an order minimum and a flat fee below it, and unopened items can be returned within 30 days on a prepaid label. Prices sit at about the market median. The operator, Prime Vitality, Inc., is named with a Santa Barbara address, phone line and California governing law. It received an FDA warning letter in December 2024 covering semaglutide, retatrutide and tirzepatide, which it was still selling in October 2026, and its shop lists tirzepatide under the name GLP-2. On 3 November 2026 we added the seven catalogue products it sells that our listings had missed (the CJC-1295/ipamorelin blend, MOTS-c, NAD+, glutathione, melanotan I and the KLOW and GLOW blends), so all 20 products we list now count. Each has a certificate confirmed at the issuing laboratory: Freedom Diagnostics for the blend and MOTS-c, Horizon Analytical for NAD+, Bioviridian for glutathione and Janoshik for the rest. The KLOW and GLOW reports give identity and amount but no purity figure, and the only melanotan I report dates from August 2025, more than 12 months old. Sermorelin and tirzepatide are now scored from Freedom certificates of 30 October 2026, the newest for each. The blend's product page describes a 5 mg plus 5 mg vial, while its current certificate is for a 10 mg plus 10 mg lot.
Prime Peptides 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).
Freedom Diagnostics TestingTier Atested
- Purity
- 99.63%
- Price per mg
- $5.50$55.00 / 10mg
Janoshik AnalyticalTier B+tested
- Purity
- 99.521%
- Price per mg
- $6.50$65.00 / 10mg
Kovera LabsTier A-tested
- Purity
- 99.782%
- Price per mg
- $0.60$60.00 / 100mg
BioviridianTier A-tested
- Purity
- 99.8%
- Price per mg
- $6.00$60.00 / 10mg
Janoshik AnalyticalTier B+tested
- Purity
- 99.625%
- Price per mg
- $4.50$45.00 / 10mg
Janoshik AnalyticalTier B+tested
- Purity
- 99.967%
- Price per mg
- $4.00$40.00 / 10mg
Freedom Diagnostics TestingTier Atested
- Purity
- 99.24%
- Price per mg
- $7.00$70.00 / 10mg
Freedom Diagnostics TestingTier Afirst seen
- Purity
- 99.4%
- Price per mg
- $8.00$80.00 / 10mg
Freedom Diagnostics TestingTier Afirst seen
- Purity
- 99.81%
- Price per mg
- $5.42$325.00 / 60mgbest of 3 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.84%
- Price per mg
- $4.33$260.00 / 60mgbest of 3 sizes
Freedom Diagnostics TestingTier Atested
- Purity
- 99.7%
- Price per mg
- $7.50$150.00 / 20mgbest of 3 sizes
Janoshik AnalyticalTier B+tested
- Purity
- 99.45%
- Price per mg
- $12.00$60.00 / 5mg
Freedom Diagnostics TestingTier Afirst seen
- Purity
- 99.41%
- Price per mg
- $6.25$125.00 / 20mg
Janoshik AnalyticalTier B+first seen
- Purity
- —
- Price per mL
- $2.50$25.00 / 10 mL
Freedom Diagnostics TestingTier Atested
- Purity
- 99.81%
- Price per mg
- $8.00$80.00 / 10mg
Freedom Diagnostics TestingTier Atested
- Purity
- 99.12%
- Price per mg
- $6.00$60.00 / 10mg
BioviridianTier A-tested
- Purity
- 99.8%
- Price per mg
- $0.05$80.00 / 1500mg
Horizon AnalyticalTier A-tested
- Purity
- 99.98%
- Price per mg
- $0.14$135.00 / 1000mg
Janoshik AnalyticalTier B+tested
- Purity
- —
- Price per mg
- $1.81$145.00 / 80mg
Janoshik AnalyticalTier B+tested
- Purity
- —
- Price per mg
- $1.86$130.00 / 70mg
Janoshik AnalyticalTier B+tested
- Purity
- 99.863%
- Price per mg
- $4.50$45.00 / 10mg
Learn more about what Prime Peptides carries
Rated higher than Prime Peptides, with a reader code
Prime Peptides is not one of our affiliate partners, so we have no code for it. These partners score above it under the same published rules, pass our testing gate, and give readers a discount.
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
8.17/10 · Strong · carries 16 of the same products
8.01/10 · Strong · carries 10 of the same products
Prime Peptides: Frequently Asked Questions
Is Prime Peptides legit?
Prime Peptides scores 7.94 out of 10 (Strong, #7 of 100) as of November 3, 2026 and passes our testing gate: all 20 products we score carry a certificate, 20 confirmed with the issuing lab (labs we grade A to B+). Its strongest area is shipping and refunds (9.0/10); its weakest is operating history (3.8/10), with over two years of records.
Is there a Prime Peptides promo code, coupon code, or discount code?
We do not have a verified Prime Peptides promo code or coupon code right now. When Prime Peptides runs a sale or issues a discount code, we post it here and on our promos page, so bookmark this page for the latest Prime Peptides discount.
Does Prime Peptides 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, Janoshik Analytical, Bioviridian, Horizon Analytical, Kovera Labs.
Where can I see Prime Peptides' COAs?
In the "Prime Peptides COAs and lab test results" table on this page. We hold 21 certificates for Prime Peptides, covering 21 of the 21 products we track, issued by 5 laboratories (Freedom Diagnostics Testing, Janoshik Analytical, Bioviridian, Horizon Analytical, Kovera Labs). 20 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 Prime Peptides carry?
Prime Peptides carries BPC-157, TB-500, GHK-Cu, Ipamorelin, Semax, Melanotan-2, Sermorelin, Tesamorelin, and 13 more. Current per-milligram pricing, COA links, and verification keys for each are in the comparison table on this page.
Is the Prime Peptides 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.
Compare Prime Peptides head-to-head
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Prime Peptides7.94Strong
20 confirmed at the lab