Batch RET-20-V-2604-001 — 99.741% HPLC + Endotoxin

Our most-documented batch. Janoshik ran a full panel from 21 to 24 April 2026: 99.741% HPLC, 20.92 mg retatrutide assay, heavy metals (As, Cd, Pb, Hg) not detected, TFA not detected, and bacterial endotoxin 1.449 EU/Vial via LAL. Endotoxin is the sterility benchmark pharma uses for release testing. Most research peptide sellers skip it. We publish it.

Batch Facts

Product: ProPeptide Retatrutide vial line (10mg and 40mg formats)
Batch number: RET-20-V-2604-001
Molecule: Retatrutide (LY3437943), CAS 2381089-83-2
Purity (HPLC): 99.741%
Assay: 20.92 mg retatrutide
Heavy metals (As, Cd, Pb, Hg): Not detected
Residual TFA: Not detected
Bacterial endotoxin (LAL): 1.449 EU/Vial
Laboratory: Janoshik Analytical
Sample received: 15 April 2026
Analysis dates: 21–24 April 2026
Purity verify key: YCYA75M373NA
Heavy metals verify key: GHHWTCPUSEZ7
TFA verify key: NUA8B6XPAMWZ
Endotoxin verify key: E8ZFE17MI47D

Janoshik Reports

Janoshik purity and assay report for batch RET-20-V-2604-001

Purity + Assay

Common GLP-1 peptide blind test

99.741% HPLC · 20.92 mg assay

Verify key YCYA75M373NA

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Heavy metals

As, Cd, Pb, Hg analysis

All four not detected

Verify key GHHWTCPUSEZ7

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Janoshik TFA report for batch RET-20-V-2604-001

Residual solvent

TFA analysis

Not detected

Verify key NUA8B6XPAMWZ

Open image

Janoshik endotoxin report for batch RET-20-V-2604-001

Sterility benchmark

Bacterial endotoxin (LAL)

1.449 EU/Vial

Verify key E8ZFE17MI47D

Open image

Common Questions

What is batch RET-20-V-2604-001?

ProPeptide Retatrutide vial line, covering both 10mg and 40mg formats. Janoshik ran a full panel 21–24 April 2026: 99.741% HPLC, 20.92 mg retatrutide assay, heavy metals (As, Cd, Pb, Hg) not detected, TFA not detected, bacterial endotoxin 1.449 EU/Vial.

What does 1.449 EU/Vial mean?

EU is endotoxin units, measured via the LAL (Limulus Amebocyte Lysate) assay. 1.449 EU/Vial is the bacterial endotoxin load found in the vial. Endotoxin is the sterility benchmark pharma uses for release testing. Most research peptide sellers skip it; this batch publishes the number.

Why test for TFA?

TFA (trifluoroacetic acid) is a common residual solvent from peptide synthesis. HPLC purity does not see it. Testing separately confirms it is not present. For this batch, TFA was not detected.

How do I verify each Janoshik report?

Go to janoshik.com and paste the relevant verification key. Purity: YCYA75M373NA. Heavy metals: GHHWTCPUSEZ7. TFA: NUA8B6XPAMWZ. Endotoxin: E8ZFE17MI47D. Each returns the original report off Janoshik's server.

What product ships with batch RET-20-V-2604-001?

The ProPeptide Retatrutide 10mg vial and 40mg vial ship under the same vial-line batch.

Where to go next

Product page ProPeptide Retatrutide 10mg Vial Ships under this batch. Product page ProPeptide Retatrutide 40mg Vial Ships under this batch. Archive All published COAs See every Janoshik report Remy has published. Related batch RET-20-C-2604-001 — 20mg Pen 99.841% HPLC, our highest-purity published batch.