QSC Peptides

Testing methods

• ·HPLC purity
• ·Mass spec identity

Testing lab

Janoshik Analytical

Most recent COA

Not publicly posted.

OpenAssay score ↗

— pending integration with openassay.org.

• Testing transparency

  36/40

  Public 7-category testing rubric grade plus disclosed testing methods plus a named third-party lab. The full range is gated on the vendor publicly naming the tests they run; a high rubric grade without disclosure caps at 18 of 40.

• Operational & regulatory standing

  22/25

  Reflects FDA actions, payment-processor issues, ownership uncertainty, closures, and editorial audit notes the vendor-risk monitor has surfaced. A recent published COA earns a small bonus on top of the operational base.

• Operational stability

  12/15

  Vendor age. 5+ years of operation earns full points; 1 year or less earns minimal credit. Absent foundedYear earns a neutral default; absence of data is not proof of risk.

• Verification tier

  10/10

  Editorial tier assignment based on documentation completeness, response to corrections, and presence of verifiable business address. Tier 1 vendors meet the highest bar.

• Price discipline

  10/10

  Heuristic check on aggressive discounting. Reasonable codes (<=25%) earn full points; 25-40% earns half; >40% off list often signals inventory clearance or churn and earns zero.

QSC Peptides clears the 90-point Trust Score threshold on the strength of two disclosed testing methods (HPLC purity and mass spectrometry identity), a named third-party lab (Janoshik Analytical), and per-batch COA discipline. As of May 2026 it is the second-newest A+ in the tier-1 set, founded in 2023, with three full years of continuous operation and eight-country domestic warehousing. The grade is built from a 36-of-40 testing component (mass spec for identity verification is the strongest signal in the rubric), a 22-of-25 regulatory standing with no audit notes, and the full 10-point tier and price-discipline weights. Pepticker docks 0.5 of 1 on heavy metals because the disclosed Janoshik panels cover identity, purity, endotoxin, and sterility but do not always include the four-metal screen. The stability component (12 of 15) is the only place the score is bounded by vendor age — five years of operation would push the composite higher. Buyers should confirm warehouse routing matches the order page; multi-country fulfillment can introduce shipping-time variance that is not reflected in the listed dispatch window. QSC Peptides is most often cross-shopped against Peptide Crafters for buyers prioritizing mass-spec identity confirmation.

Editorial rationale tying the Trust Score to component evidence. Send corrections to corrections@pepticker.com.