Add 1-2 days for shipping. The clock starts on the date of sample receipt at the lab, not the date the kit is ordered.
The HPLC analytical run itself takes ~30 minutes per sample. The longer turnaround reflects the work around the run, not the run itself:
The instrument time is the smallest part. The QC framework around every analytical run — method blanks, surrogate standards, calibration verification — drives the bulk of the timeline. Skipping any of those is what makes a COA cheap to produce and not credible to defend.
USP <85> LAL endotoxin testing on the Charles River Endosafe platform takes about 2 hours of bench time per sample. The added turnaround comes from:
USP <71> sterility is fundamentally time-bound: the method requires 14 days of incubation in two separate growth media (fluid thioglycolate and soybean-casein digest) before pass/fail determination. The incubation can't be accelerated because the test is detecting whether viable bacterial or fungal contamination will grow under standard conditions over a representative timeframe.
Our Full Disclosure panel runs sterility in parallel with the other assays, so the COA timing is the maximum of the parallel workflows. For a peptide getting purity + identity + NPC + TFA + LAL + sterility, the sterility step gates the timeline at 11-14 days inclusive of QA review.
We offer 48-hour and 72-hour priority on the Purity ($199) and Identity + Potency ($499) panels at a +35 % rush fee:
Priority is not available on Full Disclosure because the USP <71> sterility incubation is non-negotiable.
Common causes of delay beyond the standard timeline:
We supply cold-chain pre-paid UPS or FedEx kits at the standard panel price. Overnight ground typically reaches us next business day if shipped before 3:00 PM Central. Priority Overnight (Saturday delivery) is available at +$45.
For international samples, customs clearance adds 1-3 days for the inbound shipment. We handle customs documentation; client provides the commercial invoice and the certificate of origin for the peptide material.
Standard peptide COA turnaround is 5-7 business days from sample receipt for the Purity panel and 9-11 days for Full Disclosure. Priority 48/72 hour is available on the smaller panels at +35 %. USP <71> sterility's 14-day incubation is the binding constraint on any panel that includes it; nothing accelerates microbiological growth-curve fundamentals.
See per-compound turnaround on Semaglutide, Tirzepatide, BPC-157, or the full peptide testing menu.
