§ CERTIFICATE OF ANALYSIS · THIRD-PARTY HPLC · JAN-2026● VERIFIED SUBMISSION · PUBLIC RECORD

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◆ Batch ID · 250922DS5✓ Verified · Pass

DSIP (Delta Sleep-inducing Peptide) × Certified Peptides - Lab Test, January 2026

Tested Monday, January 05, 2026 · submitted by @Frank 👑 Legend

HPLC Purity

99.04%

✓ Excellent

PeptideDSIP (Delta Sleep-inducing Peptide)

BrandCertified Peptides

LabVanguard Laboratory

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Test results

8 data points

Purity

99.04%

Endotoxins

<5.00 EU/mg

Stated qty

5 mg

Tested qty

4.5 mg

Qty match

90% of labeled · -10%

Batch ID

250922DS5

Container

Small vial with pink/magenta cap / Printed label

Tested by

Vanguard LaboratoryView profile →

◆ Quantity verification

5 mg→4.5 mg-10%

About this test

This independent HPLC-UV/VIS lab test confirms DSIP 5mg from Certified Peptides at 99.04% purity with an actual assay of 4.50 mg. The analysis was performed by Vanguard Laboratory and reported on January 6, 2026, under Batch Number 250922DS5.

DSIP (Delta Sleep-inducing Peptide) is a neuropeptide researched for its role in sleep regulation, stress modulation, and neuroendocrine function. Additional testing confirmed endotoxin levels below 5.00 EU/mg (LAL method) and non-detectable levels of heavy metals including chromium, arsenic, cadmium, lead, and mercury via ICP-MS. Sterility testing was pending at the time of this report.

The full certificate of analysis is available for download on this page.