How to send peptides for lab testing: choosing vials, labels, the sample form, packing and tracking

How to send peptides for testing in seven steps

1. Get a quote and the sample form before you pack anything.
2. Choose sealed vials, picked at random from different kits if you can.
3. Number each vial and keep the product label on.
4. Fill in the sample form by hand and keep a copy.
5. Pack the vials upright in a sealed bag with padding, form inside.
6. Ship with tracking and send the tracking number to the lab.
7. Watch for the receipt confirmation. The lab’s clock starts there.

Where to send peptides for testing

The right lab depends on the question you need answered, not on distance. Most labs take samples by post from their own country, and some accept parcels from anywhere.

Where you are	What you will find	Guide
United States	More than 20 labs that take mailed samples	Peptide testing in the USA
Canada	Three services in Ontario	Peptide testing in Canada
UK and Europe	Labs in the Czech Republic, Poland, Croatia and Switzerland, and a UK service	Peptide testing in Europe and the UK
Australia and New Zealand	One Sydney lab, plus labs overseas	Peptide testing in Australia
Anywhere	Labs that accept international parcels	Where to test peptides

Pick on three things: whether identity is shown by mass, whether the safety tests you need are listed by their real method, and how anyone can check the report.

Before you ship: the quote and the sample form

Every lab has its own intake, and none of it is optional. Chromate gives its shipping address only after payment. TrustPointe asks for one cart line per sample and the order number written on the outside of the box. Freedom Diagnostics’ web form prints a packing slip with a barcode. Krause uses a chain of custody form with a row per sample for name, label claim, batch and test. Janoshik sends shipping instructions after payment.

So ask first and pack second. A parcel that arrives without the lab’s paperwork can sit unlogged, and the lab’s clock does not start until it is logged.

Choosing and labelling the vials

• Send sealed vials, as sold. Do not open or reconstitute them. Janoshik’s standard test asks for one whole unopened vial, and ILS prefers freeze-dried powder to solutions.
• Pick at random. Take vials from different kits, not the top of one box. A seller-chosen vial tells you less.
• Keep batches apart. Freedom Diagnostics asks for one cap colour per sample, because it treats different cap colours as different batches.
• Number every vial. Write the sample number on the vial or its bag, and keep the product label on. If you want the analysts not to see the label claim, cover only the claim.
• Send extra sealed vials for safety tests. Sterility and endotoxin each need their own unopened vials. Our guide on how many vials a test needs explains why.
• Photograph what you send. A photo of each vial, lot and cap before you seal the parcel gives you your own record.

If you are sending for free community testing, read the rules first: Finnrick, for example, asks for a batch ID with photo evidence.

What to write on the sample form

Our sample custody form shows the fields a good form asks for:

• Sender: the quote reference, the name to print on the report, and a contact email.
• Each sample: the sample number, the product name exactly as labelled, the label claim (or “withheld”), the lot, the number of vials and the container type.
• Packing: whether the seals are intact, who packed the parcel, the date, the carrier, the tracking number and a signature.

Copy the lot exactly as printed, including letters and dashes. Write the label claim as the label states it, not as you expect it to be. Keep a copy of the form. The dates on the report come from this record and the lab’s receipt log.

Packing peptide vials

• Stand vials upright in a sealed plastic bag, then cushion them against knocks.
• Put the form in its own bag inside the box, so a leak cannot ruin it.
• Freeze-dried peptides travel as sold. For solutions or other sensitive material, ask the lab first: ACS, for example, suggests cold packs or dry ice for material that needs it. Our guide to peptide degradation covers storage and shipping effects.
• Use a box rather than a soft envelope if the vials are glass.

Shipping, tracking and the rules

Ship with a tracked service and send the tracking number to the lab. Chromate says any courier works, and names FedEx and UPS as the carriers it has found dependable. TrustPointe asks for the tracking number with the order.

Declare the contents accurately and follow the courier’s rules. You are responsible for making sure you may legally send the sample to the lab. Labs also set their own limits. Freedom Diagnostics refuses hGH, HCG, HMG and testosterone products, and Testides asks clients not to ship controlled materials before written acceptance.

Peptide test shipping time and when the clock starts

No lab controls transit. Labs differ on which event starts their stated turnaround: ILS counts the receipt date as day 0 for its rush service, Freedom Diagnostics starts at accessioning, and Accumark counts from sample acceptance. Your total wait is transit, plus logging, plus the lab’s own time. Sterility under USP <71> adds at least 14 days of incubation whatever the lab.

What happens when the parcel arrives

A careful lab logs the parcel, checks the seals, photographs each vial, assigns a lab ID and records every step until the sample is measured, then retained or disposed of. How it works shows our version of these steps. Compare the lab’s photo of the vial with your own photo: cap colour, fill level and printed lot should match.

Mistakes that cost a retest

• Opening a vial to “check” it, which spoils endotoxin and sterility tests.
• Sending one vial for HPLC, endotoxin and sterility together.
• Leaving the label claim off the form by mistake, so no one can tell if vials are under-filled.
• Mixing two batches without saying so on the form.
• Shipping without tracking, or without the lab’s paperwork.

What HK Analytical does

Request a quote at /quote. Accept it and we send your sample numbers and the address. Vials travel unopened, with the custody form inside. On arrival each sample is logged and photographed, and the report carries the lab’s own photo of the vial as received.

Results within days of receipt. Sterility (USP <71>, 14 days) is the one test that takes 14 days, because the method incubates for 14 days. Every number comes with its raw data, and every report is a signed record that anyone with the link can check at hkanalytical.com/verify. Groups can order through group testing.