FOXO4-DRI Purity: 18 Lab Tests Across 8 Identified Manufacturers

14 studies on FOXO4-DRI curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.

Bottom line: TitrateLab currently tracks 18 published third-party lab tests of FOXO4-DRI across 8 identified manufacturers. Among reports with a positive numeric purity result, the average is 99.13%. Within this published corpus, 0 positive purity results were below 90%, and 0 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.

FOXO4-DRI 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
10 mg $48.50 $48.50–$48.50 $4.85 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 18 FOXO4-DRI batches across 8 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, 10 batches have unresolved manufacturer identity. They remain in corpus-level lab evidence and are excluded from named-manufacturer rankings.

99.13%
Avg purity
18
Batches tested
8
Identified manufacturers

Recent certificates: #80351 (99.022%) · #80460 (97.504%) · #79919 (99.375%) · #86886 (99.753%) · #85654 (99.0%) · #75278 (99.785%)

FOXO4-DRI studies and clinical research

Research tools

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