Reviewed by Jack Ryan, co-founder & editorial lead · Updated
COA practices 40%7/10
Reputation 20%6/10
Transparency 20%8/10
Operations 20%9/10
Weighted result 7.4/10; overall rating 7.5/10.
COA evidenceCOA quality 7/10✓COA verified5 verified ILS reports; 4 of 22 available exact strengths covered. Purity 99.10%–99.85%; October 1–7, 2026. HPLC identity/content and fentanyl screening.
Yes, with caveats. Zerilyx scores 7.5/10. All five published ILS reports match specific official records and identify Zerilyx LLC / Zerilyx.com. They cover four available exact strengths and one sold-out strength. Cards, Apple Pay and Google Pay are accepted.
Evidence summary
Zerilyx COAs and evidence
Zerilyx scores 7.5/10. Five named-client ILS reports provide traceable evidence for four available exact strengths. Customer history and broader catalog testing remain limited.
01
Certificate coverage and results
Zerilyx publishes five complete one-page ILS certificates, dated October 1–7, 2026. Each vendor image matches its specific official record across client, product, lot, dates, report/access identifiers, analytical results and fentanyl panel. The official records name Zerilyx LLC / Zerilyx.com. Exact reports cover GLP-3R 10 mg, Tesamorelin 10 mg, GHK-Cu 100 mg, Wolverine 20 mg and KPV 10 mg. Tesamorelin is sold out; four of 22 available peptide strengths have exact coverage. Seventeen other catalog groups show coming-soon COA placeholders.
02
Laboratory scope
Purity runs 99.10%–99.85%. Measured content is 10.37 mg for GLP-3R, 10.16 mg for Tesamorelin, 104.97 mg for GHK-Cu, 21.19 mg for Wolverine and 10.53 mg for KPV. Wolverine contains 10.50 mg BPC-157 and 10.69 mg Thymosin Beta-4. Identity uses HPLC retention-time comparison with reference material. All five report fentanyl Not Detected by immunoassay at a 50 ng/mL cutoff. No mass-spectrometry identity, endotoxin, sterility or metals results appear in these files. The ILS accreditation record covers cannabis testing; it does not establish accredited peptide testing.
03
Prices, payment and shipping
Credit/debit cards, Apple Pay and Google Pay are accepted. U.S. shipping is $9.99, free at $200, with stated 1–3 business-day delivery and same-day dispatch before 1 p.m. Eastern. The current shipping policy lists Canada, the UK and EU destinations at $29.99. Damaged or incorrect item claims must be made within seven days; other shipped sales are final. PEPTIDEPRICES is a vendor-issued 10% customer code; its checkout reduction has not been independently tested. Shipping policy and refund policy set the current customer terms.
04
Business history
Zerilyx says it was formerly zerilyxresearch.com, which no longer operates. The current domain registration is September 7, 2026; all five certificates were issued afterward. The storefront and laboratory records name Zerilyx LLC. Older policy dates are distinct from the current domain history.
05
Customer review evidence
No attributable independent customer-review corpus was established for Zerilyx.com. Its current domain was registered September 7, 2026; the vendor reports previously operating as zerilyxresearch.com.
Strengths
Five complete reports match specific ILS records
All tested reports name Zerilyx and include fentanyl screening
Published U.S. shipping prices and seven-day damage claims
Credit/debit cards, Apple Pay and Google Pay; U.S., Canada, UK and EU shipping
Watch-outs
18 of 22 available strengths have no exact published COA
No attributable customer-review history established
Details
Ships toUnited States, Canada, United Kingdom and European Union
Payment methods
Credit/debit cardsApple PayGoogle Pay
ShippingU.S. $9.99; free at $200; stated delivery in 1–3 business days. Canada, UK and EU: $29.99; stated delivery in 5–12 business days. Same-day dispatch before 1 p.m. Eastern.
Reputation
Independent external review aggregate not established yet.
22 in stockShips: United States, Canada, United Kingdom and European UnionPrices checked
Listed package price before coupons, any vial size. This is not the coupon-adjusted lowest 10mg price used to rank the comparison.
Cheapest$24.99
2nd cheapest$25.00
3rd cheapest$26.00
4th cheapest$26.06
5th cheapest$26.40
22 collected days and prices
Cheapest in-stock listing prices by collected day
Date
Cheapest
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$24.99
$25.00
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$26.06
$26.40
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$26.00
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$26.40
$24.99
$25.00
$26.00
$26.06
$26.40
$24.99
$25.00
$26.06
$26.40
$27.35
$25.00
$26.06
$27.35
$27.66
$28.00
$25.00
$26.06
$27.35
$27.66
$28.00
$26.00
$26.06
$26.99
$27.35
$27.66
$26.00
$26.06
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$27.35
$27.66
$26.00
$26.06
$27.35
$27.66
$28.00
$26.00
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$27.35
$27.66
$28.38
$26.06
$27.35
$27.66
$28.00
$28.38
$26.06
$27.35
$27.66
$28.00
$28.38
$25.99
$26.06
$27.35
$27.66
$28.00
$25.99
$26.06
$27.35
$27.66
$28.00
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$26.06
$27.35
$27.66
$28.00
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$26.06
$27.35
$27.66
$28.00
$20.00
$25.99
$26.06
$27.35
$27.66
$20.00
$26.06
$27.35
$27.66
$28.00
$25.99
$26.06
$27.35
$27.66
$28.00
$25.99
$27.35
$27.66
$28.00
$28.38
$25.99
$27.35
$27.66
$28.00
$28.38
$24.99
$24.99
$25.99
$25.99
$27.35
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Top 8 of 11 vendors that reached the cheapest five
Frequently asked questions
Is Zerilyx legit?
Yes, with caveats. Zerilyx scores 7.5/10. All five published ILS reports match specific official records and identify Zerilyx LLC / Zerilyx.com. They cover four available exact strengths and one sold-out strength. Cards, Apple Pay and Google Pay are accepted. Zerilyx scores 7.5/10 on PeptidePrices' evidence rubric: 40% COA practices, 20% community reputation, 20% transparency, and 20% operations. Affiliate relationships are disclosed on this page and are not a scoring factor.
Does Zerilyx have a coupon code?
Zerilyx lists code PEPTIDEPRICES for 10% off. PeptidePrices has not confirmed the discount in a customer checkout.
Where does Zerilyx ship?
Zerilyx ships to United States, Canada, United Kingdom and European Union. U.S. $9.99; free at $200; stated delivery in 1–3 business days. Canada, UK and EU: $29.99; stated delivery in 5–12 business days. Same-day dispatch before 1 p.m. Eastern.
Does Zerilyx publish COAs?
COA verified. 5 verified ILS reports; 4 of 22 available exact strengths covered. Purity 99.10%–99.85%; October 1–7, 2026. HPLC identity/content and fentanyl screening.
What do customer reviews say about Zerilyx?
PeptidePrices could not verify a mature independent review aggregate for Zerilyx. The evidence summary on this page records what we could and could not verify.
