Vendor and compound
Tirzepatide from Transition Biotech
Transition Biotech lists Tirzepatide at $4.50 per mg, 36% under the $7.00 peer median. No third-party certificate for Tirzepatide from Transition Biotech has been located, so nothing here establishes what is in the vial. The cheapest listed price for Tirzepatide anywhere in the index is $1.90 per mg at ZC Labs.
All Tirzepatide vendors · Transition Biotech profile · scores 82.6 of 100, rank 13 · 0 certificates for this compound · verified 23 Sept 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 30 mg | $134.99 | $4.50 | -36% | TBT-2TZ 30mg |
Read from the vendor’s own store and normalised per milligram, because a smaller vial at a lower sticker price is usually the dearer peptide.
What the laboratory found
No third-party certificate for Tirzepatide from Transition Biotech has been located.
That is a statement about the public record, not an accusation. The vendor may test and not publish, or publish somewhere we have not read. What it means for a buyer is that the price above is the only thing established here, and price says nothing about what is in the vial.
Vendors whose certificates you can check yourself lists the ones where that gap is closed.
Other vendors selling Tirzepatide
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Next Gen Peptides | 93.8 | $2.00 | 1 |
| Ascend Science | 90.1 | $4.55 | 0 |
| Amino Club | 88.3 | $2.00 | 0 |
| Origin Labs | 87.7 | — | 1 |
| Bench Grade Peptides | 86.8 | $4.50 | 3 |
| Polaris Peptides | 86.6 | $8.90 | 16 |
| Hydro Research Peptides | 86.5 | $8.50 | 6 |
| PeptidePlugs | 86.3 | — | 3 |
Ordered by overall evidence score. See every vendor listing Tirzepatide.
Questions
Is Tirzepatide from Transition Biotech third-party tested?
Not so far as this index can establish. No third-party certificate for Tirzepatide from Transition Biotech has been located. The vendor may test and not publish; what can be said is that nothing public establishes the contents of a vial.
How much does Tirzepatide cost at Transition Biotech?
$4.50 per milligram, from 30 mg at $134.99. The peer median across every vendor we price for Tirzepatide is $7.00 per mg, so this is -36% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Transition Biotech a good place to buy Tirzepatide?
Transition Biotech scores 82.6 of 100 on the published rubric and ranks 13 overall, computed from its documentation rather than from opinion. For Tirzepatide specifically no certificate is on file, which is the gap to weigh. ZC Labs lists it cheaper at $1.90 per mg.