Peptide Referee

Vendor profile

RTT Peptides review: is it legit?

Transparency score
42/100
Six checks
Live Checked Oct 16, 2026 Visit rttpeptides.com

Our findings in brief

In short: RTT Peptides scores 42/100, higher than 43% of the 197 active vendors we track. It's #64 on our best peptide vendors list.

We haven't lab-tested anything from RTT Peptides, so this covers public evidence only, not product quality. As of Oct 16, 2026:

What checks out

What's missing or unverified

Across 5 peptides that at least three vendors sell, its best prices are typically 83% above the median (0 of 5 below). Compare its prices.

At a glance

Website
rttpeptides.com
Status
Live
Domain registered
Jul 8, 2026 (3 months ago)
Registrar
NameCheap, Inc.
Domain expires
Jul 8, 2027
First archived
No archive found
Shop platform
Custom
Ships to (stated)
US
Payment (stated)
Card, PayPal, Crypto
COAs
Generic COAs only
Research-use disclaimer
Yes
Traffic rank (Tranco)
Outside the top 1 million

Transparency checks

Six checks of public information, worth 100 points. The score measures openness, not product quality. How we score.

CheckWhat we foundPointsEvidence
Domain age Registered Jul 8, 2026 (3 months old) 0/20 Registry record
Public certificates of analysis Only generic or sample COAs are public 12/25 COA page
Independent lab named on COAs No independent lab named 0/10 —
Business identity No company name or address found 0/15 —
Shipping, refund and terms pages All three found 15/15 Shipping · Terms
Card or PayPal payment (buyer protection) Site lists card, PayPal and crypto 15/15 Source, PayPal · Card, Crypto

Total: 42/100. All six checks completed.

RTT Peptides prices compared

The lowest price per milligram at RTT Peptides for each peptide, against the median listing across all vendors we track. Rank 1 = cheapest vendor for that peptide.

Peptide RTT Peptides $/mg Median $/mg vs median Price rank
Retatrutide $8.35/mg $4.56/mg +83% 23rd of 27
Tirzepatide $11.02/mg $3.27/mg +237% 26th of 27
GHK-Cu $0.725/mg $0.590/mg +23% 66th of 93
Semaglutide $5.64/mg $4.73/mg +19% 16th of 25
Cagrilintide $23.02/mg $9.00/mg +156% 55th of 56

Price index: 1.83 (1.00 = market median; lower is cheaper), across 5 peptides sold by 3+ vendors.

All 30 RTT Peptides listings, with sizes and prices
Peptide Product Size Price $/mg vs median Stock Vendor's page
Cagrilintide Cagrilintide 10 mg $230 $23.02/mg +156% — View
Cagrilintide Cagrilintide 5 mg $149 $29.84/mg +232% — View
GHK-Cu GHK-Cu (Copper Peptide) 100 mg $73 $0.725/mg +23% — View
GHK-Cu GHK-Cu (Copper Peptide) 50 mg $52 $1.04/mg +76% — View
Retatrutide Retatrutide 100 mg $835 $8.35/mg +83% — View
Retatrutide Retatrutide 80 mg $674 $8.42/mg +85% — View
Retatrutide Retatrutide 60 mg $512 $8.53/mg +87% — View
Retatrutide Retatrutide 50 mg $431 $8.62/mg +89% — View
Retatrutide Retatrutide 40 mg $348 $8.70/mg +91% — View
Retatrutide Retatrutide 30 mg $267 $8.91/mg +95% — View
Retatrutide Retatrutide 20 mg $187 $9.32/mg +104% — View
Retatrutide Retatrutide 15 mg $147 $9.81/mg +115% — View
Retatrutide Retatrutide 10 mg $106 $10.57/mg +132% — View
Retatrutide Retatrutide 5 mg $64 $12.85/mg +182% — View
Semaglutide Semaglutide 50 mg $282 $5.64/mg +19% — View
Semaglutide Semaglutide 40 mg $230 $5.75/mg +22% — View
Semaglutide Semaglutide 30 mg $180 $6.01/mg +27% — View
Semaglutide Semaglutide 20 mg $128 $6.42/mg +36% — View
Semaglutide Semaglutide 15 mg $102 $6.77/mg +43% — View
Semaglutide Semaglutide 10 mg $77 $7.67/mg +62% — View
Semaglutide Semaglutide 5 mg $50 $9.95/mg +110% — View
Tirzepatide Tirzepatide 120 mg $1,322 $11.02/mg +237% — View
Tirzepatide Tirzepatide 100 mg $1,111 $11.11/mg +240% — View
Tirzepatide Tirzepatide 80 mg $899 $11.24/mg +244% — View
Tirzepatide Tirzepatide 60 mg $688 $11.47/mg +251% — View
Tirzepatide Tirzepatide 50 mg $580 $11.60/mg +255% — View
Tirzepatide Tirzepatide 40 mg $472 $11.81/mg +262% — View
Tirzepatide Tirzepatide 30 mg $369 $12.30/mg +276% — View
Tirzepatide Tirzepatide 20 mg $261 $13.06/mg +300% — View
Tirzepatide Tirzepatide 15 mg $207 $13.82/mg +323% — View

Prices come from each vendor's public product feed and were last fetched Oct 16, 2026. They exclude shipping and discounts. $/mg uses the labeled amount, not measured content. How we compare prices.

Alternatives to RTT Peptides

Live vendors selling the same peptides as RTT Peptides, ranked by transparency score. Payments from vendors never affect this order.

# Vendor Status Transparency Domain age COAs Ships to Prices tracked Lab tests
1 Pure Peptide Labs Live 90/100 12 months Batch COAs public US, worldwide 44 —
2 Peptidology Live 90/100 22 months Batch COAs public US 3 —
3 Eros Peptides Live 87/100 3.4 years Generic COAs only US 14 —
4 Nationwide Peptides Live 85/100 11 months Batch COAs public US 38 —
5 Go Alpha Labs Live 83/100 17 months Batch COAs public US 47 —

Is something wrong?

If you run RTT Peptides, or you have evidence that something here is out of date, email [email protected] with a link to the evidence. We re-check within five business days and log every change on our corrections page.

Evidence we used (17)