NEA Diagnostics
Certificate of analysis
2026-GGHGGGGGF
Semaglutide - 5mg
Tested for: Northwind Bio
Reported 22 Jun 2026
PASS
Purity
97.8%
Label claim
5 mg
Measured
4.62 mg
Of label
92.4%
COA #
2026-GGHGGGGGF
Accession
GGHGGGGGF
Labeled content
5 mg
Purity
97.8%
Net peptide content
4.62 mg
Appearance
White Lyophilized Powder
Reported date
22 Jun 2026
Mass identificationPurityNet peptide content
Semaglutide97.8%4.62 mg
Identity confirmation
Status
✓ Confirmed
Expected mass
4113.6 Da
Observed mass
4113.5 Da
HPLC chromatogram
Reverse phase HPLC with UV at 214 nm
PeakRT (min)Area %
Solvent front1.390.6
Semaglutide main peak6.1297.8
Related impurity6.741.6
Heavy Metal Analysis (ICP-MS)
TestSpecificationResultsStatus
Arsenic (As)NMT 1.5 ppmNot detectedPASS
Cadmium (Cd)NMT 0.5 ppmNot detectedPASS
Chromium (Cr)NMT 10 ppmNot detectedPASS
Mercury (Hg)NMT 1.5 ppmNot detectedPASS
Lead (Pb)NMT 1 ppmNot detectedPASS
Sterility Testing (PCR)
TestSpecificationResultsStatus
Sterility (PCR)No GrowthNo GrowthPASS
Endotoxin Testing (USP <85>)
TestSpecificationResultsStatus
Endotoxin (USP <85>)NMT 0.05 EU/mL< 0.05 EU/mLPASS
About this result: contamination is reported as a quantitative value. Acceptable limits vary by product type and dose route; no unversioned threshold applies to RUO products. This result is below commonly referenced endotoxin thresholds.
Instrument: Agilent 1260 Infinity II
Laboratory: NEA Diagnostics, San Diego, CA
This page is the authoritative version of certificate 2026-GGHGGGGGF. Any PDF copy should match it exactly. For research use only.
Searchable via labneadiagnostics.comCOA # 2026-GGHGGGGGF · Issued 22 Jun 2026