Vendor and compound
Tirzepatide from Prime Peptides
Prime Peptides lists Tirzepatide at $10.00 per mg, 48% over the $6.75 peer median. 3 third-party certificates for this compound from this vendor are on file, assayed by Freedom Diagnostics Testing and Bioviridian Inc., averaging 99.90% purity. The cheapest listed price for Tirzepatide anywhere in the index is $1.90 per mg at ZC Labs.
All Tirzepatide vendors · Prime Peptides profile · scores 74.4 of 100, rank 14 · 3 certificates for this compound · verified 28 Sept 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 10 mg | $100 | $10.00 | +48% | GLP-2 |
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
| Lot | Assayed | Purity | Label → assayed | Laboratory | Record |
|---|---|---|---|---|---|
| 26070902 | 15 Jul 2026 | 99.97% | 30 mg → 31.2 mg | Freedom Diagnostics Testing | Open |
| 26070201 | 8 Jul 2026 | 99.92% | 30 mg → 34.1 mg | Freedom Diagnostics Testing | Open |
| 3122026TR | 24 Apr 2026 | 99.8% | 10 mg → 10.82 mg | Bioviridian Inc. | Open |
Freedom Diagnostics Testing publishes a lookup, so these reports can be confirmed at the laboratory rather than taken from the vendor. How to check one.
Other vendors selling Tirzepatide
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Origin Labs | 89.1 | — | 1 |
| Next Gen Peptides | 87.7 | $2.00 | 12 |
| ZC Labs | 87.2 | $1.90 | 2 |
| Amino Club | 86.1 | $2.00 | 0 |
| Bench Grade Peptides | 79.4 | $4.50 | 3 |
| Hydro Research Peptides | 78.7 | $8.50 | 6 |
| Stealth Research Labs | 78.1 | $4.50 | 1 |
| One Aminos | 78 | $5.00 | 1 |
Ordered by overall evidence score. See every vendor listing Tirzepatide.
Questions
Is Tirzepatide from Prime Peptides third-party tested?
Yes. 3 certificates for Tirzepatide from Prime Peptides are on file, signed by Freedom Diagnostics Testing and Bioviridian Inc.. Each names a lot, prints the assayed mass against the labelled mass, and links to the document it was read from. Freedom Diagnostics Testing also publishes a lookup, so the report can be confirmed at the laboratory rather than taken from the vendor.
How much does Tirzepatide cost at Prime Peptides?
$10.00 per milligram, from 10 mg at $100. The peer median across every vendor we price for Tirzepatide is $6.75 per mg, so this is +48% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is Prime Peptides a good place to buy Tirzepatide?
Prime Peptides scores 74.4 of 100 on the published rubric and ranks 14 overall, computed from its documentation rather than from opinion. For Tirzepatide specifically it has 3 certificates on file. ZC Labs lists it cheaper at $1.90 per mg.