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

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80%
Finnrick rating
#89 of 457 ranked vendors
7 of 8 classifiable tests passed
methodology · Purity focus
methodology →
Peptides
#
Peptide
$/MG
Rating
N
1
Retatrutide
$0.85
83%
5
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%22 Jan 2026: 76%26 Jan 2026: 77%11 Feb 2026: 78%4 Mar 2026: 77%23 Apr 2026: 78%4 Aug 2026: 79%25 Aug 2026: 80%24 Sep 2026: 80%4 Oct 2026: current 80%76%78%80%Jan 26Oct 26
Tirz Peptide test history
COA-backed lab tests
DateResultTestLabPurityDosageLabelCOA
24 Sep 2026
Pass
Retatrutide
lab nameView COA
25 Aug 2026
Pass
Tirzepatide
lab nameView COA
4 Aug 2026
Pass
Retatrutide
lab nameView COA
23 Apr 2026
Pass
Retatrutide
lab nameView COA
4 Mar 2026
Pass
Tirzepatide
lab nameView COA
11 Feb 2026
Pass
Retatrutide
lab nameView COA
26 Jan 2026
Pass
Retatrutide
lab nameView COA
22 Jan 2026
Fail
Tirzepatide
lab nameView COA

About Tirz Peptide test results from Finnrick

Tirz Peptide is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 2 peptides and 8 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 Tirz Peptide peptides in this dataset are Retatrutide (5 tests) and Tirzepatide (3 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 8 recent tests.

Corrections
No corrections.
Free peptide testing

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

Test my supply