Independent Lab Tests
We test. We don't guess.
Samples documented by MarcinLabs are submitted to independent laboratories. Results and original documentation are published so claims can be separated from data.
MarcinLabs does not currently operate its own laboratory. Analyses are performed by the named external laboratories.
Disclaimer — Research Use Only
Materials listed on this website are supplied for laboratory research only (Research Use Only). They are not intended for human consumption.
Tests published
3
Compounds tested
3
Lab reports
3
This result applies only to the individual sample submitted for analysis and should not be interpreted as verification of other batches or products from the same source.
Results
Tirzepatide
- 99%
- Purity
- 10.93 mg
- Measured content
- ±0.05 mg
- Measurement error
Completed
09 Sept 2026
Laboratory
Analiza Białek
Wrocław, Poland
This result applies only to the individual sample submitted for analysis and should not be interpreted as verification of other batches or products from the same source.
View full result →hGH
- 98%
- Purity
- 2.93 mg (8.79 IU)
- Measured content
- ±0.05 mg
- Measurement error
Completed
02 Sept 2026
Laboratory
Analiza Białek
Wrocław, Poland
This result applies only to the individual sample submitted for analysis and should not be interpreted as verification of other batches or products from the same source.
View full result →Retatrutide
- 99%
- Purity
- 21.44 mg
- Measured content
- ±0.05 mg
- Measurement error
Completed
17 Aug 2026
Laboratory
Analiza Białek
Wrocław, Poland
This result applies only to the individual sample submitted for analysis and should not be interpreted as verification of other batches or products from the same source.
View full result →