NEW SITE — FASTER TURNAROUND, MORE LABS. READ ON
Free peptide testing

Ordered GHK-Cu from PeptiSlim? Mail in a sample (US only) and let us test it for free.

Test my supply
86%
Finnrick rating
#87 of 140 GHK-Cu vendors
5 of 6 classifiable tests passed
natural 83% · customers 4.6★ (2)
methodology · Purity focus
Finnrick analysis · GHK-Cu

PeptiSlim's GHK-Cu rating is held back by an early 98.9% purity miss, though subsequent tests returned to 99.8-99.9% with identity confirmed. The main caveats are repeated missing batch IDs and fill swings from -19% to +21%.

methodology →
vendor intelligence report
Vendor Intelligence Report: PeptiSlim

Vendor-published COAs, Hong Kong contacts, and a Limeiren TikTok trail point past the US storefront to a Limeiren manufacturer layer. The report also maps AU placeholder addresses, hidden payment-descriptor language, brand-lineage leads, and regulatory exposure.

27 pages5 risk factors assessed3 Jul 2026
read the report
Peptides
#
Peptide
$/MG
Rating
N
1
Tirzepatide
$0.64
89%
32
2
Retatrutide
$1.00
86%
26
3
GHK-Cuselected
-
86%
6
4
Semaglutide
$0.64
69%
4
5
Cagrilintide
$1.53
54%
2
6
Tesamorelin
$2.30
44%
4
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%26 Jan 2026: 89%4 Feb 2026: 84%19 Feb 2026: 85%22 Feb 2026: 86%10 Mar 2026: 87%23 Apr 2026: 88%29 Sep 2026: current 86%89%88%86%Jan 26Sep 26
Showing GHK-Cu tests only
PeptiSlim GHK-Cu test history
COA-backed lab tests

About PeptiSlim test results from Finnrick

PeptiSlim is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 6 peptides and 74 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 PeptiSlim peptides in this dataset are Tirzepatide (32 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 74 recent tests.

Corrections
No corrections.
Free peptide testing

Ordered GHK-Cu from PeptiSlim? Mail in a sample (US only) and let us test it for free.

Test my supply