August 2026 drop · 14 days left
Tirzepatide.
Second vial, $1.
One compound. One month. Buy a vial at list price and the next one costs a dollar — every pair, automatically. Club members take another 20% off the whole order.
The whole model
Buy one. Next one's a dollar.
No catalog to sift through, no tiers to decode. Pick a fill size, pick a quantity, and every second vial drops to $1 at checkout.
01
Pick your fill size
Tirzepatide 10 or Tirzepatide 30 — same compound, same lot standard.
02
Pick a quantity
Order 4 vials: you pay full price for 2, and $1 each for the other 2.
03
Add the Club, optional
$9.99/month takes 20% off your entire order. Nothing autoships.
Drop lineup · one a month
Reference-grade compounds, one at a time.
About this drop
Lyophilised tirzepatide, filled under aseptic conditions and released against a lot-specific Certificate of Analysis. Two fill sizes, one release, no catalog to wade through.
Research context
Tirzepatide is a synthetic dual agonist of the glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors. It is widely used as a reference standard in metabolic receptor-signalling and incretin-pathway research.
Handling
Store lyophilised vials at 2–8°C, protected from light. Reconstitute with bacteriostatic water, refrigerate after reconstitution, and avoid repeated freeze-thaw cycles.
For laboratory research use only. Not for human or veterinary use.
August 2026 · Live now
Tirzepatide
Dual GIP / GLP-1 receptor agonist
Choose your fill size
How many vials do you want?
$178.00 · you save $88.00
Every second vial is $1, automatically. How the Club works
Quality protocol
Every batch,
8× tested.
No in-house rubber stamps. Eight separate analytical assays, performed by accredited third-party laboratories, signed onto the COA tied to every lot number we ship.
Purity
HPLC-UV against certified reference material.
Content verification
Net peptide content matched to label.
Identity
Mass spectrometry confirms the sequence.
Heavy metals
ICP-MS screen under USP <232> limits.
Sterility
USP <71> compliant sterility screen.
Endotoxin
Kinetic chromogenic LAL, < 0.5 EU/mg.
Batch conformity
Independent release review per lot.
Fentanyl screen
LC-MS/MS confirms no analogs present.
Proof, on demand
Verify any lot — full COA, signed and dated.
The testing protocol
Seven stages before a vial leaves the building.
A documented, repeatable verification pipeline applied to every single lot we release.
Synthesis
GMP-aligned solid-phase peptide synthesis at a vetted partner facility.
Identity (LC-MS)
Mass spectrometry confirms molecular weight and sequence.
Purity (HPLC)
Quantitative analysis verifies chromatographic purity above spec.
Sterility & endotoxin
Validated screens guard every fill against contamination.
Stability
Accelerated and real-time stability across the stated shelf life.
Consistency
Tolerance windows enforced batch-to-batch, lot after lot.
Documentation
Every result published in a lot-specific COA you can look up.
Why we're different
One compound a month,
documented end to end.
Most suppliers spread thin across a hundred SKUs and ask you to trust them. We release one, test it eight ways, and hand you the paperwork.
Eight-stage testing
Identity, potency, purity, fentanyl screen, stability, sterility, endotoxin and batch consistency — every lot, no exceptions.
Transparent documentation
Every order arrives with a downloadable COA. Look up any batch from the public verification portal.
US-based analysis
Each lot is independently analysed by accredited US laboratories, with chain-of-custody records on the COA.
Independent verification
We don't grade our own work. Every batch is verified by an accredited external laboratory partner.
Verification center
Look up the lot.
Read every result.
Type the lot number printed on your vial to pull the full certificate of analysis — identity, purity, sterility, endotoxin and stability data, signed by the testing laboratory.
- Independent third-party laboratory
- Signed digital COA per lot
- Public batch verification portal
- Permanent record retention
Certificate of Analysis
DPC-TZ10-2608 · TIRZEPATIDE
- Identity (HPLC-RT)
- Confirmed
- Peptide purity (HPLC)
- 99.42%
- Sterility (PCR)
- No growth
- Endotoxin (USP <85>)
- NMT 0.05 EU/mL
- Fentanyl screen
- Not detected
- Tested by
- ILS Laboratories
Verified researchers
Trusted in labs that
don't tolerate guesswork.
4.9 / 5 · 1,284 verified reviews
Lot-to-lot consistency we can actually plot. The COA is the most thorough I've seen from a private supplier.
Dr. Marin K.
Postdoc, Cell Biology
Verified buyer
One compound a month sounded limiting until I realised it means the paperwork is never an afterthought.
Lena Q.
Independent Researcher
Verified buyer
Ordering and verification are seamless, and the second-vial pricing halves what our budget used to absorb.
J. Alvarez
Lab Manager
Verified buyer
Next month · September 2026
Retatrutide
Triple receptor agonist
All the research compounds you need, with the pricing and the club that make them reachable.
Shop NowResearch updates from Dollar Peptide Club
Catalog updates, new research compounds, and quality documentation news.
For researchers and labs. No spam, unsubscribe anytime.