As of November 12, 2026, Zesty Rat has a PepAssess Evidence Score of 75/100 (strong evidence). It publishes 58 lab reports; 55 are confirmed in the issuing labs' own records (Janoshik and Vanguard), and the newest report is dated October 2, 2026. Its site shows no company name or street address. It takes card payments, which let you dispute a charge. Discount code pepassesscom10 gives 10% off.

What the Evidence Score means

It adds up points for what we could verify about Zesty Rat: lab reports we matched to the issuing lab's own public record (the biggest part), how often it tests, what the reports cover, contact details, policies, card payments and how long the site has existed. Each card below shows exactly which checks it passed. A higher score means more you can verify yourself; it is not a safety rating, and ads or affiliate deals never change it.

Lab transparency (reports validated with the lab)

35/40

✓ 1 lab report validated with the issuing lab's own public record+10
✓ 2 validated lab reports+5
✓ 4+ validated lab reports+5
– Endotoxin tested: 1 lab-validated endotoxin report (0)0
✓ Validation experience: 10+ validated reports+15

Testing frequency

12/19

✓ Newest lab report within the last 12 months+2
✓ Newest lab report within the last 6 months+3
✓ Newest lab report within the last 90 days+3
✓ New lab reports in 3+ different months of the last year+4
– New lab reports in 5+ different months of the last year0

Report details

4/5

✓ Reports carry lot / batch numbers+1
✓ Most reports carry lot / batch numbers+1
✓ Identity (mass spec) and purity (HPLC) tested+2
– Sterility and endotoxin tested0

Business transparency

4/16

– Published business address0
– Contact email published0
– Phone number published0
✓ Refund / return policy page+2
✓ Shipping policy page+2

Buyer protection

10/10

✓ Card payments (chargeback recourse)+8
✓ Research-use labeling present+2

Track record

10/10

✓ Website registered 6+ months ago+5
✓ Website registered 1+ year ago+5

Quick facts

Lab-results page: zestyratresearch.com/shop/
Testing labs (on its lab reports and site): Janoshik, Vanguard
Research-use labeling: Present
Payment methods: card
Store platform: WooCommerce
Products listed: 54
Company: Not published
Address: Not published
Email: Not published
Phone: Not published
Contact page: zestyratresearch.com/contact/
Refund policy: zestyratresearch.com/refund_returns/
Shipping policy: zestyratresearch.com/shipping-policy/
Website registered: August 2, 2025
Also listed by other directories: 1 (not scored)

Lab-validated reports (55)

Each report below was matched to the issuing lab's own public record. “Lab's copy” opens it on the lab's site; “Vendor's copy” is the file on Zesty Rat's site. Copies of the same report count once.

Janoshik · task 171691Lab's copy ↗ · Vendor's copy ↗ · checked October 10, 2026
Janoshik · task 171692Lab's copy ↗ · Vendor's copy ↗ · checked October 10, 2026
Janoshik · task 171694Lab's copy ↗ · Vendor's copy ↗ · checked October 10, 2026
Janoshik · task 171695Lab's copy ↗ · Vendor's copy ↗ · checked October 10, 2026
Janoshik · task 171696Lab's copy ↗ · Vendor's copy ↗ · checked October 10, 2026
Janoshik · task 171697Lab's copy ↗ · Vendor's copy ↗ · checked October 10, 2026
Janoshik · task 171698Lab's copy ↗ · Vendor's copy ↗ · checked October 10, 2026
Janoshik · task 171699Lab's copy ↗ · Vendor's copy ↗ · checked October 10, 2026
Janoshik · task 171700Lab's copy ↗ · Vendor's copy ↗ · checked October 10, 2026
Janoshik · task 171701Lab's copy ↗ · Vendor's copy ↗ · checked October 10, 2026

All 55 lab-validated reports →

People are talking about this

No data yet.

Affiliate & discount information

This vendor runs an affiliate program (zestyratresearch.com/my-account/?redirect_to=htt). Affiliate status is shown for transparency and is never part of the score.

Zesty Rat: questions people ask

Is Zesty Rat legit?

PepAssess doesn't vouch for any seller; it shows what each one documents. As of November 12, 2026, Zesty Rat (zestyratresearch.com) has: Evidence Score 75/100, 55 lab reports confirmed by the issuing labs' own records, website registered August 2, 2025 and no FDA warning letter found. Zesty Rat's full PepAssess profile

What do reviews say about Zesty Rat?

PepAssess's review of Zesty Rat is built from what it checked, not from opinions. As of November 12, 2026, Zesty Rat has a PepAssess Evidence Score of 75/100 (strong evidence). It publishes 58 lab reports; 55 are confirmed in the issuing labs' own records (Janoshik and Vanguard), and the newest report is dated October 2, 2026. Its site shows no company name or street address. It takes card payments, which let you dispute a charge. Discount code pepassesscom10 gives 10% off. PepAssess hasn't linked customer reviews for Zesty Rat yet. Zesty Rat review on PepAssess

Does Zesty Rat test its peptides?

Yes. Zesty Rat publishes 58 lab reports from Janoshik and Vanguard, and PepAssess matched 55 of them to the issuing lab's own public records (as of November 12, 2026). The newest report PepAssess read is dated October 2, 2026. See the lab-confirmed reports

Which labs test Zesty Rat's peptides?

Janoshik and Vanguard, as named on Zesty Rat's lab reports and website (as of November 12, 2026).

Does Zesty Rat have a coupon code?

Yes: pepassesscom10 (10% off), entered at checkout on zestyratresearch.com.

Is this your business? Show your score on your site

Paste this code into your site's footer or product pages. The badge shows your current Evidence Score, updates by itself after every PepAssess update, and links visitors to this profile.

<a href="https://pepassess.com/vendors/zestyratresearch-com?ref=badge" target="_blank" rel="noopener" title="Zesty Rat on PepAssess — evidence profile"><img src="https://pepassess.com/badge/zestyratresearch-com.svg" alt="PepAssess Evidence Score for Zesty Rat" width="270" height="76"></a>

The badge shows the current score and updates by itself whenever PepAssess updates. It links to this profile.

Sources

Collected by PepAssess directly from zestyratresearch.com on October 2, 2026 (homepage and linked contact, policy, lab-results and affiliate pages). Something wrong? Email hello@pepassess.com with the correction.