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

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73%
Finnrick rating
#297 of 378 Retatrutide vendors
1 of 3 classifiable tests passed
natural 33%
methodology · Purity focus
methodology →
Peptides
#
Peptide
$/MG
Rating
N
1
Retatrutideselected
-
73%
3
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%18 Sept 2025: 73%23 Oct 2025: 71%23 Oct 2025: 68%29 Sept 2026: current 73%73%73%Sep 25Sep 26
Showing Retatrutide tests only
Markus Lanz Retatrutide test history
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About Markus Lanz test results from Finnrick

Markus Lanz is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 1 peptide and 3 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 Markus Lanz peptides in this dataset are Retatrutide (3 tests) and Tirzepatide (0 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 3 recent tests.

Corrections
No corrections.
Free peptide testing

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

Test my supply