TB-500 Purity: 2228 Lab Tests Across 786 Identified Manufacturers

17 studies on TB-500 curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.

Bottom line: TitrateLab currently tracks 2,228 published third-party lab tests of TB-500 across 786 identified manufacturers. Among reports with a positive numeric purity result, the average is 99.0%. Within this published corpus, 16 positive purity results were below 90%, and 72 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.

TB-500 average prices

As of 2026-09-03, 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 $9.70 $5.50–$11.50 $1.94 5 sources · 5 offers
8 mg $16.00 $16.00–$16.00 $2.00 1 source · 1 offer
10 mg $18.50 $16.00–$24.50 $1.85 6 sources · 6 offers

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 2228 TB-500 batches across 786 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, 483 batches have unresolved manufacturer identity. They remain in corpus-level lab evidence and are excluded from named-manufacturer rankings.

99.0%
Avg purity
2228
Batches tested
786
Identified manufacturers
16
Failed <90% purity
72
Underdosed >10%

Top 3 vendor evidence profiles for TB-500

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 59 99.43% 0 of 47 (0.0%) 0 0% / not detected · 0 wrong compound · 12 unclassified Reveal with Pro →
#2 35 99.31% 0 of 28 (0.0%) 0 0% / not detected · 0 wrong compound · 7 unclassified Reveal with Pro →
#3 19 99.48% 0 of 19 (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: #100810 (99.71%) · #100416 (99.84%) · #100816 (99.55%) · #101187 (99.35%) · #101237 (99.24%) · #101288 (99.03%)

TB-500 studies and clinical research

Research tools

Free, no account — handy when you're working with TB-500.

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