Growth Guys Canada — Janoshik Test Reports

What is a GLP-1 Blind Identity Test?

A blind test means the laboratory receives the sample without being told what it is. The lab independently identifies the compound using mass spectrometry and chromatography, then reports what they found. This eliminates any possibility of confirmation bias.

For this test, Janoshik ran a Common GLP-1 peptide blind test — a panel capable of distinguishing between Semaglutide, Tirzepatide, and Retatrutide. The lab confirmed the sample is Retatrutide, exactly as labelled.

Results

What is HPLC?

HPLC (High-Performance Liquid Chromatography) is the gold standard analytical method for measuring peptide purity. A sample is injected into a column packed with a stationary phase. As the sample moves through the column, different compounds separate based on their chemical properties. A detector records each compound as it exits, producing the chromatogram (the graph you see in the report).

The peak table shows each detected compound, its retention time, concentration, and percentage of the total area. A single dominant peak with minimal surrounding peaks indicates high purity.

Results — Vial A

Why test multiple vials?

Testing a single vial only confirms that one specific unit meets quality standards. Multi-vial testing — running HPLC on multiple separate vials from the same batch — confirms that quality is consistent across the entire production run. This is a significantly higher standard than single-sample testing.

Vial B is the second of three independent vials tested from Batch 25370-3. Results closely mirror Vial A, confirming batch-wide consistency.

Results — Vial B

Third independent confirmation

Vial C is the third and final independent vial tested from this batch. Three separate vials, three separate HPLC runs, all conducted on the same day. Each vial is treated as a completely independent sample — there is no averaging or combining of results.

The consistency across all three vials (99.759%, 99.653%, 99.654%) demonstrates that this is not a one-off result — it reflects the true quality of the entire batch.

Results — Vial C

What are endotoxins and why do they matter?

Endotoxins are toxic molecules found in the outer membrane of certain bacteria (gram-negative bacteria). They are released when bacteria die and can survive standard sterilization processes including heat and filtration. Even in the absence of live bacteria, endotoxins can trigger serious inflammatory responses.

Endotoxin levels are measured in EU/Vial (Endotoxin Units per Vial). The lower the number, the safer the product. The test limit for this analysis was 10 EU/Vial.

Most Canadian peptide vendors do not provide endotoxin reports. Growth Guys does — making this one of the most complete testing packages available in the Canadian market.

Results