Vendor review · #11 of 24
RNX Research review
Checked October 1, 2026 · No commercial relationship with this vendor. Links to vendors are marked as sponsored.
Score 100/100 · position 11 of 24
Excellent
Connecticut-registered shop selling one retatrutide product (RNX-RT 10mg, $49) with free ground shipping inside the US. Its newest retatrutide lot has an ILS Laboratories report that we confirmed on the lab's own verification portal.
Worth knowing (not scored)
- Product page and COA identify the product as retatrutide: CAS 2381089-83-2, C221H342N46O68, and the ILS report names the analyte 'Retatrutide'.
- ILS report verified on the lab portal with access code CSNBND4Q: client RNXResearch, Retatrutide 10mg, lot RT99003-X, 99.68% purity, 10.62 mg, fentanyl screen negative.
- Site has a 21+ / qualified-researcher entry gate and an email one-time-code step before checkout.
- Refund policy threatens a permanent ban and reporting to fraud networks for chargebacks on delivered orders.
- Home page still advertised a FALL25 25% code that ended September 30, 2026.
Points in its favor
- Newest retatrutide lot confirmed on the ILS Laboratories verification portal (99.68%, 10.62 mg in a 10 mg vial)
- Low price: $49 for 10 mg
- Free ground shipping on every US order, same-day dispatch before 3 PM ET
- Registered Connecticut LLC, active in the state registry
Points against
- Only one strength (10 mg)
- No returns; damaged or wrong items replaced only if reported within 72 hours
- Young business: LLC registered April 2026
- Checkout payment methods hidden behind an email verification step
Retatrutide prices
| Product | Price | Per mg | Stock |
|---|---|---|---|
| RNX-RT 10mg | $49.00 | $4.90/mg | In stock |
Prices in US dollars as shown on the RNX Research website on October 1, 2026, before shipping and any sales tax.
Shipping details confirmed — 20/20
- Ships from inside the US; delivery Carrier estimates; options at checkout were USPS Ground, USPS Priority (2–3 business days), UPS 2nd Day Air, UPS Next Day Air; cost USPS Ground free; for a single $49 vial to Ohio the cart showed USPS Priority $11, UPS 2nd Day Air $12, UPS Next Day Air $40; free shipping
Ships from: inside the US. Carriers: USPS, UPS. Dispatch: Same day for orders before 3:00 PM ET Mon–Fri and before 10:00 AM ET Saturday. Delivery: Carrier estimates; options at checkout were USPS Ground, USPS Priority (2–3 business days), UPS 2nd Day Air, UPS Next Day Air. Cost: USPS Ground free; for a single $49 vial to Ohio the cart showed USPS Priority $11, UPS 2nd Day Air $12, UPS Next Day Air $40. Shipping is free. Shipping policy says ground shipping is free on every order and orders over $125 get free 2-day shipping. US addresses only (incl. PO boxes and APO/FPO on USPS); no international shipping.
Payment methods listed — 15/15
- Payment methods listed: card, ACH / bank transfer, cryptocurrency
Payment options: card, ACH / bank transfer, cryptocurrency. Footer shows Visa, Mastercard and Amex badges. Checkout is behind an email one-time-code step, so method names were not seen; the store's cart API lists gateways 'attestly_payments', 'bacs' (direct bank transfer) and 'depay_wc_payments' (DePay crypto). Returns: No returns or exchanges on shipped orders. Damaged or wrong items are replaced at no cost if reported with photos within 72 hours of delivery; nothing has to be sent back. No refunds for parcels the carrier marks delivered.
Quality claims stated — 25/25
- 2 retatrutide lab reports from a named lab, latest dated 2026-07-15; at least one matched on the lab’s own site
| Lab | Test | Task / ID | Strength | Batch | Result | Tested |
|---|---|---|---|---|---|---|
| ILS Laboratories (San Diego, CA) | Identity & purity | #COA-2026-GBOVH4✓ matched on lab site | 10 mgmeasured 10.62 mg | RT99003-X | 99.68% | July 15, 2026 |
| BTLabs (West Palm Beach, FL) | Identity & purity | #IF-824-QSA-TR006-BTL26453-02 | 10 mgmeasured 10 mg | RT99001-X | 99.6% | May 13, 2026 |
Lab details are as published by the vendor. Reports marked ✓ were opened on the lab’s own verification page and matched the vendor’s copy.
Contact info listed — 15/15
- Contact details listed: email, address
Legal entity: RNXResearch L.L.C. (LLC), registered in Connecticut, file number 3428881, status active. Address on record: 2389 Main St. STE 100, Glastonbury, CT 06033. Registry record. Site footer reads '© 2026 RNXRESEARCH LLC' with 2389 Main St, Glastonbury, CT 06033. Connecticut business registry (data.ct.gov Business Master dataset) shows RNXResearch L.L.C., domestic LLC, account 3428881, registered 2026-04-22, status Active. The registry contact email belongs to a registered-agent service (Northwest Registered Agent), so the Glastonbury address is probably an agent address, not a warehouse.
Independent rating found — 15/15
- Trustpilot 4.7 from 35 reviews
- Trustpilot: 4.7 from 35 reviews (checked October 1, 2026) — view
Perks confirmed — 10/10
- Free US shipping on every order; free USPS Ground shipping on every order; free 2-day shipping over $125; multi-vial discounts (5 vials 20% off, 10 vials 40% off listed on the product); Build-a-Kit: 10% off 5+ vials, 15% off a full case of 10
Sources
Everything above comes from these pages, checked on October 1, 2026:
- rnxresearch.com/
- rnxresearch.com/shop/rnx-rt-10mg/
- rnxresearch.com/wp-json/wc/store/v1/products?per_page=100
- rnxresearch.com/wp-json/wc/store/v1/cart
- rnxresearch.com/checkout/
- rnxresearch.com/coas/
- rnxresearch.com/wp-content/uploads/2026/04/RT10COA07142026.pdf
- ils-lab.com/verify/
- portal.ils-lab.com/verify/SBDWghr0K0e8MDy0
- rnxresearch.com/about/
- rnxresearch.com/contact/
- rnxresearch.com/shipping/
- rnxresearch.com/refund_returns/
- rnxresearch.com/terms-and-conditions/
- rnxresearch.com/disclaimer/
- rnxresearch.com/blog/
- rnxresearch.com/did-my-peptides-survive-storage/
- rnxresearch.com/affiliates/
- rnxresearch.com/wp-json/wp/v2/search?search=dosage
- opencorporates.com/companies?q=RNXRESEARCH
- data.ct.gov/resource/n7gp-d28j.json?$where=upper(name)%20like%20'%25RNX%25'
- www.trustpilot.com/review/rnxresearch.com
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