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ACS Laboratory vs USP-Focused Contract Labs

A peptide-focused independent lab running USP-aligned methods for compounding pharmacies and research groups — versus general pharma contract labs that treat peptides as a side workflow.

Side-by-side comparison

AttributeACS LaboratoryUSP-focused contract lab
Specialization Peptide-focused analytical labGeneral USP / pharma-oriented contract lab
Quality systemDocumented method validation, independent of suppliersVaries by lab
USP-aligned methodsUSP <85>, <467>, <921> and identityYes (their core business)
ASTM peptide standards ASTM D8558, contributing to ASTM F49Rarely referenced
DEA registeredYesVaries
Turnaround 5–7 business days4–6 weeks typical
HPLC purity (214 nm)YesYes
LC-MS / ESI-MS identityYesYes
Peptide method developmentYes — in-houseAvailable at extra cost
503A / 503B pharmacy workflow Purpose-builtAvailable
Per-sample pricing on peptides$150–$700Higher; project-based

USP methods, peptide expertise

General USP-aligned contract labs are excellent at small-molecule pharma work but often push peptide samples into a validation queue because reversed-phase peptide chromatography and LC-MS peptide identity are not their daily volume. ACS runs those methods every day: HPLC purity at 214 nm, LC-MS identity, USP <85> LAL endotoxin, USP <921> Karl Fischer moisture, and USP <467> residual solvents — on the same COA.

Built for 503A / 503B workflows

Report formatting matches what state boards of pharmacy expect on inspection. See our compounding pharmacy testing page for the full documentation set.

Related reading

Frequently asked questions

Frequently Asked Questions

For 503A and 503B compounding pharmacies, USP-aligned test methods are effectively required. ACS Peptide Testing Labs is independent and runs USP-referenced methods for peptide identity, purity, moisture (USP <921> Karl Fischer), endotoxin (USP <85> LAL), and residual solvents (USP <467>). Reports are formatted to support pharmacy board and regulatory documentation.

USP standards are chapter-by-chapter method specifications published by the U.S. Pharmacopeia. A well-run peptide lab documents its own method validation, traceability, and quality system, then executes USP-referenced methods on top of it. ACS does both.

Yes. Compounding pharmacies are one of our core customer segments. We provide USP-aligned purity, identity, endotoxin, moisture, and residual solvent testing, and structure reports to support pharmacy board audits, state inspections, and 503B outsourcing facility documentation.

Yes. We run kinetic chromogenic LAL to USP <85> for injectable peptide products. The result ships on the same Certificate of Analysis as purity and identity, so pharmacies do not need to split the sample across labs.

ACS reports Certificates of Analysis in 5–7 business days after sample receipt. Large pharma-oriented contract labs typically quote 4–6 weeks for the same panel because peptide characterization sits outside their core small-molecule workflow.

HPLC purity is $150–$300 per sample. A full USP-aligned COA panel (HPLC purity + LC-MS identity + Karl Fischer moisture + LAL endotoxin) is typically $400–$700. Volume discounts apply at 5+ samples and standing customer pricing is available for pharmacies.