Growth Guys Review — Independent Lab RecordJanoshik-tested batches · TorontoHealth

Lab results by compound

The 244 published reports, grouped. 20 compounds have three or more, covering 146 of them. Range and sub-98% counts are shown because an average alone hides both.

CompoundReportsListingsMeanRangeUnder 98%
Human Growth Hormone (HGH)26796.67%93.844% – 97.85%26
Retatrutide23599.41%96.27% – 99.86%1
BPC-15711399.57%98.51% – 99.89%—
Tesamorelin9399.28%97.74% – 99.89%1
GHK-Cu9399.62%99.005% – 99.98%—
Tirzepatide8499.67%99.19% – 99.88%—
TB-5007399.48%99.15% – 99.87%—
MOTS-c7399.33%98.84% – 99.762%—
Semax5299.38%98.9% – 99.78%—
Semaglutide5399.43%99.33% – 99.64%—
Selank4299.8%99.57% – 99.92%—
SS-314299.82%99.746% – 99.89%—
PT-1414299.77%99.48% – 99.89%—
KPV4299.63%99.35% – 99.87%—
Ipamorelin4299.85%99.82% – 99.89%—
IGF-1 LR34298.91%98.38% – 99.51%—
Thymosin Alpha-13199.58%99.32% – 99.74%—
Sermorelin3299.43%99.2% – 99.65%—
Dsip3399.19%99.03% – 99.51%—
CJC-1295 with DAC3397.79%95.31% – 99.07%1

The range column is the one worth reading twice. A compound averaging 99% across a two-point spread and one averaging 99% across a nine-point spread are not the same product, and only one of those averages means much. The sub-98% column counts results that stayed published; a vendor removing them would show a dash here and a better mean.

Compounds with fewer than three reports are not listed separately — a line built on one certificate is not a record. Every report, including those, is in the full archive.

How to read any of these certificates

Three checks, in the order that catches most.

1. The batch number, not the product name. A certificate proves a particular batch was tested. Match the batch on the document against the batch on what you were sent; a report for the same product from a different batch says nothing about the vial in your hand.

2. Who hosts the file. Every report linked from this site opens on verify.janoshik.com, the testing laboratory's own domain. A PDF hosted by the seller can be edited by the seller, and that is the whole difference between a testing claim and testing evidence.

3. The test date against the batch date. An old certificate attached to a current batch is the most common way a genuine document is used to vouch for something it never tested.

Purity is also not the only figure that matters. Mass says how much peptide the vial actually held — a 99% pure vial containing 8mg of a labelled 10mg is a different problem from an impure one, and it is visible only if the certificate states mass. These do.

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Lab-report figures, sources and today’s coupon details are on the front page · every report, counted.

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