QC Labs reviews
QC Labs at a glance
- PepFinder Score
- 6.7/10
- Based in
- United States
- Products tracked
- 7 across 7 peptides
- Testing evidence
- Stated by the store, no certificates on file
- Verified store
- ✓ Verified owner
- Last checked
- 2 Nov 2026
PepFinder currently tracks 7 products from QC Labs across 7 peptides. PepFinder last read its listings on 2 Nov 2026.
PepFinder rating
Out of 10
Customer rating
No customer reviews yet
- 7 products across 7 peptides
- Verified owner: the store proved to PepFinder that it controls its website
- No card payment option found; other methods may not be reversible
We may earn a commission. How this works
QC Labs review: what we found
Last checked 2 Nov 2026 · All sources
What PepFinder checked
Observed by our checks or taken from public records
What the store says
The store's own statements, not checked by PepFinder
- The supplier states its products are independently tested: “…Quality Verification — How QC Labs documents third-party testing and how to verify a Certificate of Analysis directly with the issuing laboratory.…”States independent testing ↗ · 29 Oct 2026
- The supplier names Freedom Diagnostics in connection with testing: “…COA Library — Batch-specific third-party Certificates of Analysis from Janoshik Analytical and Freedom Diagnostics Testing, with HPLC purity, mass-spec identity and test date .…”Names Freedom Diagnostics ↗ · 29 Oct 2026
- The supplier names Janoshik in connection with testing: “…COA Library — Batch-specific third-party Certificates of Analysis from Janoshik Analytical and Freedom Diagnostics Testing, with HPLC purity, mass-spec identity and test date .…”Names Janoshik ↗ · 29 Oct 2026
- The supplier's website links to certificates of analysis or lab results. Documents are not reviewed until an editor checks them.Links a COA / lab results page ↗ · 29 Oct 2026
- The website publishes an email address.Publishes contact details ↗ · 29 Oct 2026
Not yet known
Gaps in the record, not faults
- Whether its testing claims hold up: we have not yet seen and reviewed one of its certificates.
- Not yet found on its website: domain age, public batch numbers.Details
- What ordering is like: no PepFinder customer has reviewed it or reported an order yet.
PepFinder has not bought from or tested this store's products. Request a correction with evidence.
No customer reviews of QC Labs yet
Ordered from QC Labs? 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.
Rating by category
How we rate- Product selection
- 5.9 / 10
- Value
- 4.1 / 10
- Reliability
- 7.5 / 10
- Delivery
- 8.5 / 10
- Customer service
- 5.0 / 10
- Payment options
- 7.0 / 10
- Review sentiment
- Not enough data
- Testing and traceability
- 6.1 / 10
- Information availability
- Good
Why does PepFinder say this?
We can show a source for 13 of the 15 facts that matter about a store (who runs it, contact details, shipping, payments, testing, prices). Not yet confirmed: domain age, public batch numbers. “Not confirmed” means we have not found it, not that the answer is no. See sources.
Pros and things to consider
Pros
- 7 products across 7 peptides
- Verified owner: the store proved to PepFinder that it controls its website
- Refund or returns policy published
Things to consider
- No card payment option found; other methods may not be reversible
From PepFinder's own checks of the supplier's website and public records. “Not confirmed” means we have not found it yet. Request a correction.
About QC Labs
Who they are and what they sell
QC Labs is based in the United States. It lists 7 products across 7 peptides. It states it ships to the United States. It accepts Zelle and Venmo. Its PepFinder Score is 6.7 out of 10. It has no customer reviews on PepFinder yet. PepFinder last read its website on 2 Nov 2026.
QC Labs is a research-peptide store based in United States. We track 7 of its listings across 7 peptides, including GHK-Cu, KLOW blend, MOTS-c, NAD+, Retatrutide and Tesamorelin. It has no customer reviews on PepFinder yet.
To see whether QC Labs is good value, compare its prices per mg with other stores on GHK-Cu prices in the US, KLOW blend prices in the US and MOTS-c prices in the US. The “Is QC Labs 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: US-based supplier of research-use-only peptides. Every batch is third-party tested and COAs are published on each product page. Ships FedEx 2 Day from Dallas, TX.
From QC Labs
Provided by the store. Not checked by PepFinder.
- Third-party COAs published for tested lots
- Ships FedEx 2 Day from Dallas, TX
- Free shipping on orders $250+
- Shipping costs
- $15 flat rate, free on orders $250+
Store and verification
Verified supplier · 8 legitimacy checks
Store information
- Trading name
- QC Labs
- Location
- TX, United States
- Established
- 2026
- First tracked by us
- 29 Oct 2026
- Estimated time active
- 10 months
- support@qclabsinc.com
Is QC Labs 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.
Written policies (In place)
Refund policy and terms published.
Independent testing (Not known)
QC Labs states that its products are independently tested, links a certificates-of-analysis or lab-results page, names Janoshik, Freedom Diagnostics. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
PepFinder verification (Not known)
Not verified. Most suppliers are not; verification is voluntary.
Regulator notices and warnings (In place)
None found in our records.
Card payments (Be aware)
No card payment shown (Zelle, Venmo). Other methods may offer no way to reverse a payment.
Customer reviews (Not known)
No reviews on PepFinder yet.
Shipping and payments
Delivery: 3–4 business days (1–2 days processing + FedEx 2 Day) · 2 payment methods
Shipping, payment and policies
- Ships to
- United States
- Methods
- FedEx 2 Day
- Delivery estimate (stated)
- 3–4 business days (1–2 days processing + FedEx 2 Day)
- Shipping policy clear
- Not yet assessed
- Payment methods
- ZelleVenmo
- Card payments
- ✕ No
- Refund policy
- Published
- Refund policy clear
- Not yet assessed
- Returns policy
- Published
- Terms of sale
- Published
- Privacy policy
- Published
How QC Labs works with customers
- Dispatch time
- 1–2 business days Supplier submitted
- Free shipping from
- USD 250.00 Supplier submitted
- Currencies
- USD Supplier submitted
Replies and complaints
- No reviews to reply to yet since claiming this profile.
- 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 30 Oct 2026.
Testing and certificates of analysis
QC Labs states that its products are independently tested, links a certificates-of-analysis or lab-results page, names Janoshik, Freedom Diagnostics. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
Testing transparency
- Certificates of analysis
- Testing claimed, not reviewedSupplier claims
QC Labs states that its products are independently tested, links a certificates-of-analysis or lab-results page, names Janoshik, Freedom Diagnostics. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
- Batch-specific COAs
- Not yet assessed
- States third-party testing
- ✓ Yes
- Laboratories named by the supplier
- Janoshik, Freedom Diagnostics
- Lab accreditation identifiable
- Not yet assessed
- Batch numbers public
- Not yet assessed
- Manufacturing/source location disclosed
- Not yet assessed
- Testing documents we hold
- None yet
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.
Full catalogue (14 products)
Every listing we track, with search, price per mg and price history
Listed catalogue and prices
14 products · last checked 2 Nov 2026| Product (as listed) | Price | Per mg | Stock |
|---|---|---|---|
| US$49.00 50mg Store's price · 30 Oct 2026 | US$0.98 | ||
| Not stated As listed | — | ||
| US$129.00 80mg Store's price · 30 Oct 2026 | US$1.61 | ||
| Not stated As listed | — | ||
| US$89.00 10mg Store's price · 30 Oct 2026 | US$8.90 | ||
| Not stated As listed | — | ||
| US$80.00 500mg Store's price · 30 Oct 2026 | US$0.16 | ||
| Not stated As listed | — | ||
| US$149.00 10mg Store's price · 30 Oct 2026 | US$14.90 | ||
| Not stated As listed | — | ||
| US$99.00 10mg Store's price · 30 Oct 2026 | US$9.90 | ||
| Not stated As listed | — | ||
| US$85.00 10mg Store's price · 30 Oct 2026 | US$8.50 | ||
| Not stated As listed | — |
7 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 30 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: 68%
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.
| Fact | Status | Last observed |
|---|---|---|
| Business location | Known, sourced | 4 days ago |
| Contact details | Known, sourced | 4 days ago |
| Shipping destinations | Known, no source shown | — |
| Stated delivery time | Known, no source shown | — |
| Payment methods | Known, sourced | 4 days ago |
| Customer support channels | Known, sourced | 4 days ago |
| Refund or returns policy | Known, no source shown | — |
| Terms of sale | Known, no source shown | — |
| Domain age | Not known | — |
| Certificates of analysis | Known, sourced | 4 days ago |
| Independent testing | Known, sourced | 4 days ago |
| Testing laboratory | Known, sourced | 4 days ago |
| Public batch numbers | Not known | — |
| Product catalogue | Known, sourced | 5 hours ago |
| Prices | Known, sourced | 5 hours ago |
Evidence and sources
| Topic | Claim | Basis | Source type | Captured | Last checked | Source |
|---|---|---|---|---|---|---|
| Pricing | 7 peptide listings read from the supplier's own catalogue. Prices and stock are as the site listed them at capture. | Supplier-stated | Supplier website | 30 Oct 2026 | 5 hours ago | Supplier's public product catalogue |
| Certificates of analysis | The supplier's website links to certificates of analysis or lab results. Documents are not reviewed until an editor checks them. | Supplier-stated | Supplier website | 29 Oct 2026 | 4 days ago | Links a COA / lab results page |
| Testing claim | The supplier states its products are independently tested: “…Quality Verification — How QC Labs documents third-party testing and how to verify a Certificate of Analysis directly with the issuing laboratory.…” | Supplier-stated | Supplier website | 29 Oct 2026 | 4 days ago | States independent testing |
| Contact details | The website publishes an email address. | Supplier-stated | Supplier website | 29 Oct 2026 | 4 days ago | Publishes contact details |
| Testing claim | The supplier names Freedom Diagnostics in connection with testing: “…COA Library — Batch-specific third-party Certificates of Analysis from Janoshik Analytical and Freedom Diagnostics Testing, with HPLC purity, mass-spec identity and test date .…” | Supplier-stated | Supplier website | 29 Oct 2026 | 4 days ago | Names Freedom Diagnostics |
| Other | The website links to its privacy page. | Supplier-stated | Supplier website | 29 Oct 2026 | 4 days ago | Linked policy page |
| Testing claim | The supplier names Janoshik in connection with testing: “…COA Library — Batch-specific third-party Certificates of Analysis from Janoshik Analytical and Freedom Diagnostics Testing, with HPLC purity, mass-spec identity and test date .…” | Supplier-stated | Supplier website | 29 Oct 2026 | 4 days ago | Names Janoshik |
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
- 30 Oct 2026CatalogueNew listing: KLOW Blend (80mg)
- 30 Oct 2026CatalogueNew listing: GHK-Cu (50mg)
- 30 Oct 2026CatalogueNew listing: NAD+ (500mg)
- 30 Oct 2026CatalogueNew listing: MOTS-c (10mg)
- 30 Oct 2026CatalogueNew listing: Tesamorelin (10mg)
- 30 Oct 2026CatalogueNew listing: Tirzepatide (10mg)
- 30 Oct 2026CatalogueNew listing: Retatrutide (10mg)
- 30 Oct 2026VerificationProfile claimed by the supplier
- 29 Oct 2026ListingPublished on PepFinder
- 29 Oct 2026ListingSupplier added to the directoryDiscovered and read from its own website by the ingestion pipeline; approved by an editor. Pending publication review.
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.
Transparency Score
Out of 10 · methodology v1 · updated 30 Oct 2026 · 50% of criteria assessed
Testing, documentation and business transparency. Separate from the PepFinder Score. Paid plans and sponsorship cannot change it. How it is calculated
Show every factor
Testing transparency — 6.1
- ◐ Links a certificates-of-analysis page (not yet reviewed by us)12.5/25
- ? COAs are batch-specificnot assessed
- ✓ States third-party (independent) testing20/20
- ✓ Names the testing laboratories10/10
- ? Laboratory accreditation is identifiablenot assessed
- ✕ COAs reviewed by us in the last 12 months0/15
Contact transparency — 10.0
- ✓ Contact details are public15/15
- ? Manufacturing/source location disclosednot assessed
Documentation — 3.3
- ◐ Sourced evidence on record28/40
- ✕ Share of evidence independently verified0/30
- ? Batch numbers are publicnot assessed
- ✕ A testing document checked in the last 6 months0/15
User reviews
No approved reviews yet.
Customer service
Not yet assessed by the editorial team.
Shipping transparency — 5.0
- ? Shipping policy is clearnot assessed
- ✕ Delivery estimate stated0/30
- ✓ Shipping destinations listed30/30
Longevity
No domain record or founding date researched yet.
Policy transparency — 3.3
- ? Refund policy is clearnot assessed
- ? Terms of sale are clearnot assessed
- ✕ Refund or returns policy published0/20
- ✕ Terms of sale published0/20
- ✓ Privacy policy published20/20
Compare QC Labs with other suppliers
| Supplier | Rating | Customer rating | Prices | Products | |
|---|---|---|---|---|---|
 Red Rock Peptides | 6.1 | No reviews yet | 28% above | 41 | Visit store |
 PSPeptides™ | 7.5 | No reviews yet | 4% below | 98 | Visit store |
 American Peptides | 6.8 | No reviews yet | 39% above | 91 | Visit store |
We may earn a commission. How this works
QC Labs vs Red Rock PeptidesQC Labs vs PSPeptides™QC Labs vs American PeptidesAll alternatives to QC Labs
QC Labs: common questions
Is QC Labs legit?
We cannot vouch for any supplier, but we can report what the record shows. QC Labs meets 3 of the 8 checks we make; points to be aware of: card payments. Each check, and its source, is listed on this page.
Where is QC Labs based?
Our records place QC Labs in United States.
Which countries does QC Labs ship to?
QC Labs states that it ships to United States. Check the supplier's own shipping policy before ordering.
Does QC Labs publish certificates of analysis?
QC Labs states that its products are independently tested, links a certificates-of-analysis or lab-results page, names Janoshik, Freedom Diagnostics. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
What payment methods does QC Labs accept?
The website shows: Zelle, Venmo.
How long does QC Labs take to deliver?
QC Labs states: "3–4 business days (1–2 days processing + FedEx 2 Day)".
Ready to shop at QC Labs?
- 7 products across 7 peptides
- Verified owner: the store proved to PepFinder that it controls its website
We may earn a commission. How this works
Run QC Labs? Add a free PepFinder badge to your website.
Problem with an order? Raise it privately with QC Labs; 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