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66%
Finnrick rating
#325 of 457 ranked vendors
17 of 22 classifiable tests passed
methodology · Purity focus
Finnrick analysis

YB Peptide's strongest purity-focus evidence is in Retatrutide, with repeated current identity, purity, and fill passes across the deepest record. BPC-157, Tesamorelin, and Tirzepatide are more dispersed, with earlier identity/purity/fill misses and later rebounds, while missing or newer-only batch IDs limit lot-level confidence.

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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
read the report
Peptides
#
Peptide
$/MG
Rating
N
1
Retatrutide
$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%28 Jul 2025: 65%21 Aug 2025: 66%1 Sep 2025: 51%10 Sep 2025: 48%15 Sep 2025: 49%18 Sep 2025: 49%9 Oct 2025: 50%22 Nov 2025: 53%25 Nov 2025: 56%25 Nov 2025: 55%25 Nov 2025: 56%23 Dec 2025: 57%29 Dec 2025: 56%29 Dec 2025: 56%9 Jan 2026: 57%10 Feb 2026: 58%10 Mar 2026: 60%12 Mar 2026: 63%12 Mar 2026: 64%28 Apr 2026: 65%28 Apr 2026: 65%1 Jun 2026: 66%14 Oct 2026: current 66%65%56%66%Jul 25Oct 26
Free peptide testing

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

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YB Peptide test history
COA-backed lab tests
DateResultTestLabPurityDosageLabelCOA
1 Jun 2026
Pass
Tirzepatide
lab nameView COA
28 Apr 2026
Pass
Retatrutide
lab nameView COA
28 Apr 2026
Pass
Tesamorelin
lab nameView COA
12 Mar 2026
Pass
Retatrutide
lab nameView COA
12 Mar 2026
Pass
Tesamorelin
lab nameView COA
10 Mar 2026
Pass
BPC-157
lab nameView COA
10 Feb 2026
Pass
Retatrutide
lab nameView COA
9 Jan 2026
Pass
Tesamorelin
lab nameView COA
29 Dec 2025
Pass
Retatrutide
lab nameView COA
29 Dec 2025
Fail
Tirzepatide
lab nameView COA
1-10 of 22

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 peptides from YB Peptide? Mail in a sample (US only) and let us test it.

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