Semaglutide Purity: 1262 Lab Tests Across 314 Identified Manufacturers

941 studies on Semaglutide curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.

Bottom line: TitrateLab currently tracks 1,262 published third-party lab tests of Semaglutide across 314 identified manufacturers. Among reports with a positive numeric purity result, the average is 99.55%. Within this published corpus, 3 positive purity results were below 90%, and 57 reports showed measured quantity more than 10% below the label claim. These are batch-level observations, not guarantees of product identity, safety, or vendor quality.

Semaglutide average prices

As of 2026-09-04, vendor-blind retail asking-price averages for the US delivery market, calculated from the same in-stock exact-strength cells as the Peptide Price Index. Shipping is excluded.

Strength Average / vial Observed range / vial Average / mg Coverage
5 mg $7.33 $5.50–$10.50 $1.47 3 sources · 3 offers
10 mg $11.17 $8.00–$16.00 $1.12 3 sources · 3 offers
15 mg $16.33 $10.00–$29.00 $1.09 3 sources · 3 offers
20 mg $15.67 $11.50–$22.50 $0.78 3 sources · 3 offers
30 mg $155.00 $155.00–$155.00 $5.17 1 source · 1 offer

Asking prices are not manufacturing cost and do not establish product equivalence, quality, safety, or legality. The refresh date is the catalog build date; individual source observation dates are not available in this snapshot. View full price methodology →

We tested 1262 Semaglutide batches across 314 identified manufacturers

Independent certificate-of-analysis evidence from third-party labs — the data behind the studies. Updated as new COAs are verified. Read the full grey-market analysis →

Within that total, 226 batches have unresolved manufacturer identity. They remain in corpus-level lab evidence and are excluded from named-manufacturer rankings.

99.55%
Avg purity
1262
Batches tested
314
Identified manufacturers
3
Failed <90% purity
57
Underdosed >10%

Top 3 vendor evidence profiles for Semaglutide

Eligible vendors have at least 2 deduplicated tests and 2 classifiable identity observations. Rank uses the 95% lower confidence bound on clean identity results; mean positive purity and test count break ties. Missing measurements are not passes. Exact-zero/not-detected and explicit wrong-compound markers count once per adverse certificate. This describes tested batches, not every product or shipment, and is not an endorsement.

RankManufacturerTestsAvg positive purityIdentity adverse results
#1 29 99.43% 0 of 29 (0.0%) 0 0% / not detected · 0 wrong compound Reveal with Pro →
#2 30 99.43% 0 of 26 (0.0%) 0 0% / not detected · 0 wrong compound · 4 unclassified Reveal with Pro →
#3 25 99.55% 0 of 25 (0.0%) 0 0% / not detected · 0 wrong compound Reveal with Pro →

Manufacturer identities are included with Pro. Batch counts and lab measurements remain visible.

Recent certificates: #97734 (99.9%) · #96281 (99.9%) · #96282 (99.9%) · #74761 (99.107%) · #82240 (99.218%) · #86130 (99.94%)

Semaglutide studies and clinical research

Research tools

Free, no account — handy when you're working with Semaglutide.

Reconstitution calculator Bac water, concentration & insulin-unit math Verify a COA Look up a report number against our corpus