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Ordered Retatrutide from YB Peptide? Mail in a sample (US only) and let us test it for free.

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85%
Finnrick rating
#34 of 378 Retatrutide vendors
8 of 8 classifiable tests passed
natural 100% · customers 4.7★ (7)
methodology · Purity focus
Finnrick analysis · Retatrutide

YB Peptide's Retatrutide shows a low-concern purity/fill profile, with identity passing and purity at or above 99.5% on every report. The caveat is traceability: several rows lack batch identifiers despite stable fills from -10% to +8%.

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vendor intelligence report
Vendor Intelligence Report: YB Peptide

We investigated who actually operates YB Peptide — corporate records, ownership trails, web infrastructure, and how its lab results break down product by product. Read the full report before you order.

21 pages8 risk factors assessed13 Jun 2026
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Peptides
#
Peptide
$/MG
Rating
N
1
Retatrutideselected
$0.95
85%
8
2
Tirzepatide
$0.50
75%
4
3
BPC-157
$0.80
55%
5
5
GHK-Cu
$0.06
-
0
6
Mazdutide
$2.00
-
0
7
Melanotan II
$0.65
-
0
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%21 Aug 2025: 68%15 Sep 2025: 73%18 Sep 2025: 75%25 Nov 2025: 79%29 Dec 2025: 81%10 Feb 2026: 83%12 Mar 2026: 85%28 Apr 2026: 86%29 Sep 2026: current 85%68%83%85%Aug 25Sep 26
Showing Retatrutide tests only
YB Peptide Retatrutide test history
COA-backed lab tests

About YB Peptide test results from Finnrick

YB Peptide is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 4 peptides and 22 tests, including ratings, observed price signals, recent test dates, and correction history where available.

Finnrick ratings are calculated from published sample data using the selected rating standard. The default standard evaluates purity, dose accuracy, and label quality, then adjusts low-volume results so small sample counts do not appear more certain than the data supports.

The most visible YB Peptide peptides in this dataset are BPC-157 (5 tests), Retatrutide (8 tests) and Tesamorelin (5 tests). Use the peptide table above to compare the current Finnrick rating, price per mg, and sample volume for each peptide.

Recent tests and corrections are shown below when available. Samples may be acquired by Finnrick directly or submitted through Finnrick testing programs; the goal is to make safety and supply-chain evidence easier to evaluate than vendor marketing claims alone. This page currently lists 22 recent tests.

Corrections
No corrections.
Free peptide testing

Ordered Retatrutide from YB Peptide? Mail in a sample (US only) and let us test it for free.

Test my supply