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Peptide testing

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

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69%
Finnrick rating
#330 of 498 ranked vendors
5 of 6 classifiable tests passed
methodology · Purity focus
Finnrick analysis

TCI's Purity focus record is strongest in Retatrutide, where recent reports show confirmed identity, very high purity, and only modest underfill despite missing batch identifiers. Tesamorelin is more dispersed, with an earlier purity miss followed by a pass with tight fill, so the small, thinly documented record remains uncertain.

methodology →
vendor intelligence report
Vendor Intelligence Report: TCI

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

21 pages4 risk factors assessed13 Jun 2026
read the report
Peptides
#
Peptide
$/MG
Rating
N
1
Tirzepatide
$0.48
79%
2
2
Retatrutide
$1.00
78%
2
5
CJC-IPA
$1.00
-
0
7
PT-141
-
-
0
8
Semaglutide
$0.75
-
0
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%10 Jun 2025: 62%9 Sep 2025: 41%9 Oct 2025: 46%17 Oct 2025: 54%14 Nov 2025: 62%29 Dec 2025: 63%12 Nov 2026: current 69%62%63%69%Jun 25Nov 26
TCI test history
COA-backed lab tests
DateResultTestLabPurityDosageLabelCOA
29 Dec 2025
Pass
Tirzepatide
lab nameView COA
14 Nov 2025
Pass
Tirzepatide
lab nameView COA
17 Oct 2025
Pass
Retatrutide
lab nameView COA
9 Oct 2025
Pass
Tesamorelin
lab nameView COA
9 Sep 2025
Fail
Tesamorelin
lab nameView COA
10 Jun 2025
Pass
Retatrutide
lab nameView COA

About TCI test results from Finnrick

TCI is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 3 peptides and 6 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 TCI peptides in this dataset are Retatrutide (2 tests), Tesamorelin (2 tests) and Tirzepatide (2 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 6 recent tests.

Corrections
No corrections.
Peptide testing

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

Test my supply