Send us a sample.

1 · Create a submission

Open the chain-of-custody form (PDF, fillable). Enter your contact information, the SKU/identity of each sample, lot or batch identifier (if any), and the test tier you're requesting. Sign and date.

Download Chain-of-Custody Form (PDF)

2 · Package the sample

Standard packaging requirements:

• Lyophilized peptides: original vial, sealed, cap intact. No reconstituted material.
• Place vial(s) in a small zip-top bag inside a rigid mailer or padded envelope.
• For temperature-sensitive samples, include 1–2 gel packs (frozen). Charter does not require cold chain for lyo samples — but we accept them.
• Tape the signed chain-of-custody form to the outside of the inner bag.
• Mailer/envelope clearly labeled with our address (below) and your return address.

3 · Ship to Charter

Use any traceable carrier (USPS Priority, UPS, FedEx). We recommend tracking on every shipment. Receipt is logged on the same business day if delivered before 3 PM MT.

4 · Receive your report

You'll receive a confirmation email within 2 business hours of sample receipt. Identity tier reports return in 3 business days, Comprehensive in 5. Each report is delivered as a single-page PDF along with a Verify ID for permanent lookup at /verify.

FAQ

How much sample do I need to send?

Minimum 5 mg of lyophilized material for Identity tier. Comprehensive tier requires 15 mg minimum (preserves enough material for replicate testing and a retain).

Can I submit a reconstituted sample?

No. Charter only accepts lyophilized samples. Reconstituted material introduces interference factors we cannot control for.

What if my sample fails?

Your report is delivered regardless of verdict. A failed report is just as useful as a passed report — both are evidence. You can choose whether to share the report with your customer or supplier.

Does Charter retain samples?

We retain a 3 mg minimum sample of every submission for one year for retest purposes. After one year, retains are destroyed per our sample-disposal SOP.