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Peak Lab Peptides reviews

Verified supplier: PepFinder has verified ownership and selected business information. It does not mean PepFinder endorses the supplier or its products.

Peak Lab Peptides at a glance

PepFinder Score
8.5/10
Customer reviews
1 so far · rating shown from 3
Based in
United States
Products tracked
104 across 44 peptides
Price level
6% below the US market median
Testing evidence
1 lab certificate reviewed
Verified store
Yes
Online for
About 1 year
Last checked
1 Nov 2026

PepFinder currently tracks 104 products from Peak Lab Peptides across 44 peptides. Its listed prices per mg are 6% below the US market median, across 21 listings we could compare. The cheapest listing we track is US$26. PepFinder last read its listings on 1 Nov 2026.

8.5/ 10

PepFinder rating

Out of 10

Customer rating

1 review · shown from 3

Best for: Testing transparency and large product selection

  • Large range with 104 listed products
  • Certificates of analysis confirmed with the laboratory
  • Store details verified by PepFinder

How its prices compare · 21 listings checked against the market

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Peak Lab Peptides review: what we found

Last checked 1 Nov 2026 · All sources

What PepFinder checked

Observed by our checks or taken from public records

  • We read 104 listings across 44 peptides from its website.Details · 1 Nov 2026
  • Its comparable prices are 6% below the market median per mg (21 listings compared in the same currency).Details · 1 Nov 2026
  • We hold 1 certificate of analysis from this store that we have reviewed, 1 confirmed with the laboratory.Details
  • Verified owner: the store's owner claimed this profile and proved to PepFinder that they control peaklabpeptides.com.Details · 1 Oct 2026

What the store says

The store's own statements, not checked by PepFinder

What customers report

Reviews and reports from buyers

  • 1 approved review on PepFinder.Details

Not yet known

Gaps in the record, not faults

  • Not yet found on its website: domain age, testing laboratory, public batch numbers.Details

PepFinder has not bought from or tested this store's products. Request a correction with evidence.

Community snapshot

Community data: No community data yet

5.0 / 51 review
—reported successful delivery0 delivered
—median delivery
—would order again
—median dispatch

What customers have told PepFinder about Peak Lab Peptides comes from 1 review. Community data: no community data yet.

0 community order reportsReport an order

Customer reviews

5.0 / 5

Based on 1 customer review · a rating is shown from 3

Write a review
5★1
4★0
3★0
2★0
1★0
Delivery
5.0 (1)
Value
5.0 (1)
Customer service
5.0 (1)
Packaging
5.0 (1)
Website
5.0 (1)

All 1 reviews · Moderated before publication; suppliers can reply but not remove them. Review policy

Recent reviews

  • Most reliable peptide company! Their team actually cares about the quality of their products & their service!!

    Verified order

    Selection 5★Pricing 5★Delivery 5★Support 5★Website 5★Packaging 5★Communication 5★

    Order arrived · Paid by card · Would order again

    My experience with peak lab peptides has been seamless from start to finish, I cannot recommend them enough! Not only is the quality of their products top notch, but their professionalism and customer service has been equally as impressive and reliable. There are so many fake and shady companies out there that kept me from ever getting started with peptides, but as soon as my friend recommended this company to me and I did all my research, I never turned back! I have now purchased and been using multiple peptides from them and could not be more happy and grateful for the quality of their peptides and the liability of their service. I recommend their company to everyone and anyone!

    Rose · 6 Oct 2026 · Report

    Response from Peak Lab Peptides · 6 Oct 2026

    Hey Rose, Thank you for spending the time to write a review. We sincerely appreciate the care and thought you put into this. We take incredible pride in our company and always appreciate hearing from researchers like you.

Rating by category

How we rate
Product selection
9.9 / 10
Value
6.9 / 10
Reliability
7.9 / 10
Delivery
8.8 / 10
Customer service
10.0 / 10
Payment options
8.5 / 10
Review sentiment
Not enough data
Testing and traceability
8.1 / 10
Information availability
Good
Why does PepFinder say this?

We can show a source for 12 of the 15 facts that matter about a store (who runs it, contact details, shipping, payments, testing, prices). Not yet confirmed: domain age, testing laboratory, public batch numbers. “Not confirmed” means we have not found it, not that the answer is no. See sources.

Popular products

Checked 1 Nov 2026
ProductSupplier price
GLP-3
Retatrutide 60mg
GLP-3 ↗
US$287.83
US$4.80/mg
30% below average
GHK-Cu 10-Vial Kit
GHK-Cu 50 mg
GHK-Cu 10-Vial Kit ↗
US$282.40
—
5-amino-1mq
5-Amino-1MQ 10mg
5-amino-1mq ↗
US$39.15
US$3.92/mg
33% above average
BPC-157
BPC-157 5 mg
BPC-157 ↗
US$29.73
US$5.95/mg
3% above average
HGH 191AA
HGH 36 iu
HGH 191AA ↗
US$99.00
—
Cerebrolysin Research Atomizer
Cerebrolysin As listed
Cerebrolysin Research Atomizer ↗
US$311.50
—
Visit peaklabpeptides.com

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Prices as listed by the supplier when we last checked; the supplier confirms the final price. “vs market” compares price per mg with the median across tracked suppliers listing the same peptide in the same currency and serving this store's region, never converted.

How its prices compare

Peak Lab Peptides lists in USD. We compared 21 of its 104 listings with the median price per mg across the other stores that list the same peptide in USD and serve the US (18 to 181 stores per product). Prices are never converted between currencies, so this is a like-for-like comparison for a buyer in the US.

Taken together, its typical listing sits 6% below that market median. Behind that: 11 products priced below most stores, 2 within 5% of the median, and 8 products priced above most stores. A store is rarely the cheapest or the dearest on everything, so the product you want matters more than the overall figure.

Priced below most stores (11)

ProductPricevs market median
Kisspeptin-10 10 mgUS$29.7350% below
IGF-1 DES 2mgUS$68.8838% below
Wolverine blend 20 MGUS$79.7538% below
Thymalin 10 mgUS$32.6335% below
Retatrutide 60mgUS$287.8330% below
ARA-290 10mgUS$39.1527% below

And 5 more in the full catalogue below.

Priced above most stores (8)

ProductPricevs market median
Oxytocin 2mgUS$26.0088% above
HGH Fragment 176-191 2MGUS$27.8056% above
HGH Fragment 176-191 5MGUS$64.8046% above
Adipotide 5mgUS$68.8039% above
5-Amino-1MQ 10mgUS$39.1533% above
PNC-27 5 MGUS$79.0033% above

And 2 more in the full catalogue below.

Price per mg lets vials of different sizes be compared. A higher price can reflect a smaller vial, included shipping, or testing the store pays for; the per-peptide price pages show every store side by side. Prices are as the store listed them when we last checked.

Pros and things to consider

Pros

  • Large range with 104 listed products
  • Certificates of analysis confirmed with the laboratory
  • Store details verified by PepFinder
  • Accepts card payments, which carry chargeback protection
  • Refund or returns policy published

Things to consider

  • Nothing flagged

From PepFinder's own checks of the supplier's website and public records, and customer reviews. “Not confirmed” means we have not found it yet. Request a correction.

About Peak Lab Peptides

Who they are and what they sell

Peak Lab Peptides is based in the United States. It lists 104 products across 44 peptides. It states it ships to the United States. It accepts Card, Visa, Mastercard, American Express, Apple Pay and Zelle. Its PepFinder Score is 8.5 out of 10. Customers rate it 5.0 out of 5 from 1 review on PepFinder. PepFinder last read its website on 1 Nov 2026.

Peak Lab Peptides is a research-peptide store based in United States. We track 104 of its listings across 44 peptides, including Retatrutide, HGH, Wolverine blend, NAD+, Sermorelin and Tesamorelin. It has 1 customer review on PepFinder, averaging 5.0 out of 5.

To see whether Peak Lab Peptides is good value, compare its prices per mg with other stores on Retatrutide prices in the US, HGH prices in the US and Wolverine blend prices in the US. The “Is Peak Lab Peptides legit?” checks below cover contact details, payment, delivery and testing. Before a first order, read how to read a peptide COA and compare other suppliers in the US.

In their own words: Peak Lab Peptides is a research-focused peptide company providing high-quality research compounds, transparent product information, and reliable customer service. We are committed to consistency, quality, and responsible research. All peptides exceed 99% purity (with. most above 99.7%), are shipped same day (M-F) and have award winning customer service.

From Peak Lab Peptides

Provided by the store. Not checked by PepFinder.

  • High-Purity Research Peptides
  • Third-Party Testing & COAs
  • Fast, Reliable Shipping
  • Dedicated Customer Support
Shipping costs
Free 2nd day air above $200

Store and verification

Verified supplier · 8 legitimacy checks

Store information

Trading name
Peak Lab Peptides
Location
South Dakota, United States
Established
2025
First tracked by us
30 Sept 2026
Estimated time active
1.8 years
Website
peaklabpeptides.com We may earn a commission
Email
support@peaklabpeptides.com
Phone
6055242800
Store verifiedClaimed by store

Is Peak Lab Peptides legit? What we can check

No website can promise that a supplier is trustworthy. These are the checks we can make from public records, the supplier’s own website and our reviews. They are the same checks as in our guide to spotting an unreliable supplier.

  • Website history (Not known)

    Domain age not yet recorded.

  • Ways to get in touch (In place)

    Email, Phone, Live chat, Contact form.

  • Written policies (In place)

    Refund policy and terms published.

  • Independent testing (In place)

    PepFinder holds 1 certificate of analysis for Peak Lab Peptides; 1 confirmed directly with the issuing laboratory, the newest dated 2026-07-23.

  • PepFinder verification (In place)

    Store details checked by PepFinder: website control, contact channels and policies. This is not a statement about product quality.

  • Regulator notices and warnings (In place)

    None found in our records.

  • Card payments (In place)

    Card payment shown on the website, which usually allows a chargeback if an order goes wrong.

  • Customer reviews (In place)

    1 review, averaging 5.0 out of 5.

Shipping and payments

Delivery: 1-4 days · 6 payment methods

Shipping, payment and policies

Ships to
United States
Methods
UPS, USPS
Delivery estimate (stated)
1-4 days
Shipping policy clear
Not yet assessed
Payment methods
CardVisaMastercardAmerican ExpressApple PayZelle
Card payments
✓ Yes
Refund policy
Published
Refund policy clear
Not yet assessed
Returns policy
Published
Terms of sale
Published
Privacy policy
Published

How Peak Lab Peptides works with customers

Dispatch time
Same day before 3pm Supplier submitted
Currencies
USD Supplier submitted

Replies and complaints

  • Replied to 1 of 1 reviews in the last year, usually within a day.
  • No complaints raised through PepFinder in the last year.

Only a customer can confirm a complaint is resolved. Complaint details are private.

Store details last updated 2 Oct 2026.

Testing and certificates of analysis

PepFinder holds 1 certificate of analysis for Peak Lab Peptides; 1 confirmed directly with the issuing laboratory, the newest dated 2026-07-23.

Testing transparency

Certificates of analysis
COA confirmed with labPepFinder reviewed

PepFinder holds 1 certificate of analysis for Peak Lab Peptides; 1 confirmed directly with the issuing laboratory, the newest dated 2026-07-23.

Batch-specific COAs
Not yet assessed
States third-party testing
✓ Yes
Laboratories named by the supplier
None found
Lab accreditation identifiable
Not yet assessed
Batch numbers public
Not yet assessed
Manufacturing/source location disclosed
Not yet assessed
Testing documents we hold
1
Last checked
9 Oct 2026

We record what testing documents state and where they came from. We do not test products, and a certificate is not evidence that a product is safe for any use.

Certificates of analysis on record

PeptideBatchLaboratoryTest dateMethodsStated purityStatusSource
RetatrutideRT-202607-001Bioviridian23 Jul 2026——Confirmed with labView

Purity figures are as printed on the certificate. “Reviewed” means we checked the document is batch-specific, dated and names a laboratory; “confirmed with lab” means the laboratory confirmed it issued the certificate.

Full catalogue (184 products)

Every listing we track, with search, price per mg and price history

Listed catalogue and prices

184 products · last checked 1 Nov 2026
Product (as listed)PricePer mg
5-amino-1mq
5-Amino-1MQ
5-amino-1mq (opens peaklabpeptides.com)
US$33.24
5mg
Store's price · 9 Oct 2026
Site showed a different price · 30 Oct 2026
US$6.65
5-amino-1mq
5-Amino-1MQ
5-amino-1mq (opens peaklabpeptides.com)
US$39.15
10mg
US$3.92
5-amino-1mq 10-Vial Kit
5-Amino-1MQ
5-amino-1mq 10-Vial Kit (opens peaklabpeptides.com)
US$265.92
5mg
—
5-amino-1mq 10-Vial Kit
5-Amino-1MQ
5-amino-1mq 10-Vial Kit (opens peaklabpeptides.com)
US$352.00
10mg
—
ACE-031
ACE-031
ACE-031 (opens peaklabpeptides.com)
US$112.20
As listed
Store's price · 9 Oct 2026
Site showed a different price · 30 Oct 2026
—
AHK-Cu Peptide
AHK-Cu
AHK-Cu Peptide (opens peaklabpeptides.com)
US$51.00
50mg
Store's price · 9 Oct 2026
Site showed a different price · 30 Oct 2026
US$1.02
AHK-Cu Peptide
AHK-Cu
AHK-Cu Peptide (opens peaklabpeptides.com)
US$88.00
100mg
Store's price · 9 Oct 2026
Site showed a different price · 30 Oct 2026
US$0.88
AICAR
AICAR
AICAR (opens peaklabpeptides.com)
US$52.00
As listed
Store's price · 9 Oct 2026
Site showed a different price · 30 Oct 2026
—

80 of these prices and stock levels were provided by the supplier and have not yet been checked on their website by PepFinder, so they are not used in price comparisons or scores. Last updated 9 Oct 2026.

The supplier confirms the final price and availability when you order. Product names, photos, quantities and prices are as publicly listed by the supplier; photos load from the supplier’s own website. “vs market” compares price per mg with the median across tracked suppliers listing the same peptide in the same currency; prices are never converted between currencies. We do not sell these products and give no guidance on their use.

Sources and evidence

Where each fact came from · information availability: good

Evidence Coverage: 73%

What we know about this supplier, and whether we can show you where it came from. “Not known” means we have not found it, not that the answer is no.

FactStatusLast observed
Business locationKnown, sourced33 days ago
Contact detailsKnown, sourced33 days ago
Shipping destinationsKnown, no source shown—
Stated delivery timeKnown, no source shown—
Payment methodsKnown, sourced33 days ago
Customer support channelsKnown, sourced33 days ago
Refund or returns policyKnown, sourced33 days ago
Terms of saleKnown, sourced33 days ago
Domain ageNot known—
Certificates of analysisKnown, sourced33 days ago
Independent testingKnown, sourced33 days ago
Testing laboratoryNot known—
Public batch numbersNot known—
Product catalogueKnown, sourced1 day ago
PricesKnown, sourced75 of 184 listed prices can be compared per mg1 day ago

Evidence and sources

TopicClaimBasisSource typeCapturedLast checkedSource
Contact detailsThe website publishes an email address and a phone number.Supplier-statedSupplier website30 Sept 202633 days agoPublishes contact details
Certificates of analysisThe supplier's website links to certificates of analysis or lab results. Documents are not reviewed until an editor checks them.Supplier-statedSupplier website30 Sept 202633 days agoLinks a COA / lab results page
Testing claimThe supplier states its products are independently tested: “…Research-Grade Peptides, Third-Party Tested.…”Supplier-statedSupplier website30 Sept 202633 days agoStates independent testing
Refund policyThe website links to its refund policy page.Supplier-statedSupplier website30 Sept 202633 days agoLinked policy page
TermsThe website links to its terms page.Supplier-statedSupplier website30 Sept 202633 days agoLinked policy page
Pricing155 peptide listings read from the supplier's own catalogue. Prices and stock are as the site listed them at capture.Supplier-statedSupplier website30 Sept 20261 day agoSupplier's public product catalogue
OtherThe website links to its privacy page.Supplier-statedSupplier website30 Sept 202633 days agoLinked policy page

Verified fact: checked by us against an independent source. Supplier-stated: what the supplier says, not independently confirmed. User report: submitted by a user. Editorial assessment: our judgement. Spotted an error? Request a correction.

Supplier history

  1. 1 Nov 2026CatalogueNew listing: BPC-157, TB-500 Research Atomizer
  2. 1 Nov 2026CatalogueNew listing: ARA-290 10mg Research Atomizer (10mg)
  3. 1 Nov 2026CatalogueNew listing: Cerebrolysin Research Atomizer
  4. 1 Nov 2026CatalogueNew listing: Dihexa Research Atomizer
  5. 1 Nov 2026CatalogueNew listing: Sermorelin 10mg Research Atomizer (10mg)
  6. 1 Nov 2026CatalogueNew listing: Epithalon 10mg Research Atomizer (10mg)
  7. 1 Nov 2026CatalogueNew listing: KPV 10mg Research Atomizer (10mg)
  8. 1 Nov 2026CatalogueNew listing: Tesamorelin Research Atomizer
  9. 1 Nov 2026CatalogueNew listing: Glutathione Research Atomizer
  10. 1 Nov 2026CatalogueNew listing: KLOW Blend 80mg Research Atomizer (80mg)
  11. 1 Nov 2026CatalogueNew listing: GLOW Blend 70mg Research Atomizer (70mg)
  12. 1 Nov 2026CatalogueNew listing: GLP-3 Research Atomizer
  13. 1 Nov 2026CatalogueNew listing: PT-141 10mg Research Atomizer (10mg)
  14. 1 Nov 2026CatalogueNew listing: Semax Research Atomizer
  15. 1 Nov 2026CatalogueNew listing: VIP Research Atomizer
  16. 1 Nov 2026CatalogueNew listing: TB-500 Research Atomizer
  17. 1 Nov 2026CatalogueNew listing: Thymosin Alpha-1 Research Atomizer
  18. 1 Nov 2026CatalogueNew listing: Selank 10/11mg Research Atomizer (11mg)
  19. 1 Nov 2026CatalogueNew listing: Oxytocin Acetate Research Atomizer
  20. 1 Nov 2026CatalogueNew listing: NAD+ Research Atomizer
  21. 1 Nov 2026CatalogueNew listing: Melanotan I Research Atomizer
  22. 1 Nov 2026CatalogueNew listing: MOTS-c Research Atomizer
  23. 1 Nov 2026CatalogueNew listing: MT-2 (Melanotan 2) – 10mg Research Atomizer (10mg)
  24. 1 Nov 2026CatalogueNew listing: KissPeptin-10 Research Atomizer
  25. 1 Nov 2026CatalogueNew listing: Ipamorelin Research Atomizer
  26. 1 Nov 2026CatalogueNew listing: IGF-DES 2mg Research Atomizer (2mg)
  27. 1 Nov 2026CatalogueNew listing: DSIP Research Atomizer
  28. 1 Nov 2026CatalogueNew listing: GHK-Cu Research Atomizer
  29. 1 Nov 2026CatalogueNew listing: CJC-1295 with DAC Research Atomizer
  30. 30 Oct 2026PriceTesamorelin (10mg): price down 10%

How PepFinder rates suppliers

What the rating and the customer rating each measure

The PepFinder rating (out of 10) is our own assessment of a supplier across reliability, product selection, pricing, delivery, customer service, website, payment options, packaging and how much information the supplier makes available. Each part is scored from what we can observe on its website, from public records and from customer reviews; parts we cannot observe are left unscored rather than marked down, and the rating is only shown once enough of them are known. It can move as more of the inputs become available.

The customer rating (out of 5 stars) is simply the average of approved customer reviews, shown from three reviews. Reviews are moderated before publication and suppliers can reply but not remove them.

The price comparison puts each listing's price per milligram against the median across every tracked supplier listing the same peptide in the same currency and serving the same region, so a UK store is measured against stores a UK buyer could order from. Prices are never converted between currencies. Suppliers cannot pay to change any of this; claiming or verifying a profile does not change the rating either.

View the full methodology

7.5/ 10

Transparency Score

Out of 10 · methodology v1 · updated 29 Oct 2026 · 53% of criteria assessed

Testing, documentation and business transparency. Separate from the PepFinder Score. Paid plans and sponsorship cannot change it. How it is calculated

Testing transparency25%7.1
Contact transparency20%10.0
Documentation15%5.1
User reviews15%5.8
Customer service10%n/a
Shipping transparency5%10.0
Longevity0%4.9
Policy transparency5%10.0
Show every factor

Testing transparency — 7.1

  • ✓ Certificates of analysis on file, confirmed with the laboratory25/25
  • ? COAs are batch-specificnot assessed
  • ✓ States third-party (independent) testing20/20
  • ✕ Names the testing laboratories0/10
  • ? Laboratory accreditation is identifiablenot assessed
  • ◐ COAs reviewed by us in the last 12 months5/15

Contact transparency — 10.0

  • ✓ Contact details are public15/15
  • ? Manufacturing/source location disclosednot assessed

Documentation — 5.1

  • ◐ Sourced evidence on record28/40
  • ✕ Share of evidence independently verified0/30
  • ? Batch numbers are publicnot assessed
  • ✓ A testing document checked in the last 6 months15/15

User reviews — 5.8

  • ✓ 1 approved review(s), average 5.00★
  • ✓ Adjusted towards 3★ until more reviews exist: 3.33★

Customer service

Not yet assessed by the editorial team.

    Shipping transparency — 10.0

    • ? Shipping policy is clearnot assessed
    • ✓ Delivery estimate stated30/30
    • ✓ Shipping destinations listed30/30

    Longevity — 4.9

    • ✓ Earliest recorded activity 1.8 years ago

    Policy transparency — 10.0

    • ? Refund policy is clearnot assessed
    • ? Terms of sale are clearnot assessed
    • ✓ Refund or returns policy published20/20
    • ✓ Terms of sale published20/20
    • ✓ Privacy policy published20/20

    Compare Peak Lab Peptides with other suppliers

    SupplierRatingProducts
    Limitless Biotech logoLimitless Biotech5.4293Visit store
    Apex Laboratory logoApex Laboratory7.8139Visit store
    Behemoth Labz logoBehemoth Labz6.3133Visit store

    We may earn a commission. How this works

    Peak Lab Peptides vs Limitless BiotechPeak Lab Peptides vs Apex LaboratoryPeak Lab Peptides vs Behemoth LabzAll alternatives to Peak Lab Peptides

    Peak Lab Peptides: common questions

    Is Peak Lab Peptides legit?

    We cannot vouch for any supplier, but we can report what the record shows. Peak Lab Peptides meets 7 of the 8 checks we make, with nothing flagged. Each check, and its source, is listed on this page.

    Where is Peak Lab Peptides based?

    Our records place Peak Lab Peptides in United States.

    Which countries does Peak Lab Peptides ship to?

    Peak Lab Peptides states that it ships to United States. Check the supplier's own shipping policy before ordering.

    Does Peak Lab Peptides publish certificates of analysis?

    PepFinder holds 1 certificate of analysis for Peak Lab Peptides; 1 confirmed directly with the issuing laboratory, the newest dated 2026-07-23.

    What payment methods does Peak Lab Peptides accept?

    The website shows: Card, Visa, Mastercard, American Express, Apple Pay, Zelle.

    How long does Peak Lab Peptides take to deliver?

    Peak Lab Peptides states: "1-4 days".

    Help other buyers of Peak Lab Peptides

    Ordered from Peak Lab Peptides? A review or a short report of dispatch, delivery, payment or support helps the next buyer. Reviews are moderated; the store can reply but not remove them.

    Ready to shop at Peak Lab Peptides?

    • Large range with 104 listed products
    • Certificates of analysis confirmed with the laboratory
    Visit peaklabpeptides.com

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    Run Peak Lab Peptides? Add a free PepFinder badge to your website.

    Problem with an order? Raise it privately with Peak Lab Peptides; either side can bring in PepFinder.

    Something wrong on this page? Request a correction with evidence.

    This page provides supplier and market information only and is not medical advice. Disclaimer

    Peak Lab Peptides logo

    Peak Lab Peptides

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