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We test peptides and related catalog compounds as a lyophilized powder, tablet or capsule, or a declared aqueous, oil, or other supported liquid presentation. 4X Essential is the recommended standard; 8X Comprehensive adds depth. Both paid panels are open for sample intake and default to Rapid DNA Layer 4, a molecular target screen that is not USP <71>.

Vial minimums, conformity repeats, the DX panel, and free community testing

Matrix and vehicle are recorded separately, so an oil carrier is never collapsed into “solution.” The Rapid-only 4X/8X route starts at one sealed vial. Optional conformity repeats compare independent same-lot vial results on their own declining price ladder. USP <71> selection reserves one separate whole vial for FTM and one for SCDM, so the minimum is three sealed vials; a production-batch scope may require more. Incubation runs no fewer than 14 days from initiation. PASS requires the locked face-up criteria and the recorded observations to meet them; an unresolved qualification or criterion is surfaced to our staff for resolution and does not block entry, signing, or release.

DX Diluent & Solvent is a separate article-specific panel and certificate route for controlled diluents such as bacteriostatic water, bacteriostatic sodium chloride, and acetic-acid solution. DX is not a renamed 4X/8X peptide panel. Its Layer 4 is the same Rapid DNA screen used on 4X/8X, a molecular target screen that is not USP <71>; USP <71> finished-sterile testing is an optional module on DX, as on every panel.

The free 4X community program is temporarily paused until its one current signed activation plan supplies the exact material allocation. Paid sample intake remains open.