SS-31 Purity: 1600 Lab Tests Across 663 Identified Manufacturers

95 studies on SS-31 curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.

Bottom line: TitrateLab currently tracks 1,600 published third-party lab tests of SS-31 across 663 identified manufacturers. Among reports with a positive numeric purity result, the average is 99.79%. Within this published corpus, 0 positive purity results were below 90%, and 65 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.

SS-31 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 $11.50 $9.50–$13.00 $1.15 6 sources · 6 offers
30 mg $29.00 $29.00–$29.00 $0.97 1 source · 1 offer
50 mg $42.25 $39.00–$45.50 $0.84 2 sources · 2 offers
100 mg $71.50 $71.50–$71.50 $0.71 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 1600 SS-31 batches across 663 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, 397 batches have unresolved manufacturer identity. They remain in corpus-level lab evidence and are excluded from named-manufacturer rankings.

99.79%
Avg purity
1600
Batches tested
663
Identified manufacturers
65
Underdosed >10%

Top 3 vendor evidence profiles for SS-31

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 34 99.76% 0 of 34 (0.0%) 0 0% / not detected · 0 wrong compound Reveal with Pro →
#2 43 99.77% 0 of 31 (0.0%) 0 0% / not detected · 0 wrong compound · 12 unclassified Reveal with Pro →
#3 13 99.79% 0 of 13 (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: #101082 (99.79%) · #101337 (99.91%) · #100902 (99.65%) · #101097 (99.85%) · #100438 (99.75%) · #100509 (99.85%)

SS-31 studies and clinical research

Research tools

Free, no account — handy when you're working with SS-31.

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