Legal

Sample Submission Guidelines

How to prepare, label and send a sample so that it arrives safely, can be matched to your order, and can be analysed without delay.

Last updated: 7 September 2026

Contents

Before anything else: place your order first. Your order reference is what allows us to match your parcel to your order — a sample that arrives without one may not be identifiable, and cannot be analysed.

1. Order before you send

Place and pay for your order before dispatching anything. You will receive an order confirmation containing a unique order reference. Nothing should be sent to us before you have that reference.

Please do not send samples to our registered address on your own initiative. Submission instructions, including where to send your parcel, are issued once your order is confirmed.

2. How much to send

Each analysis has a minimum quantity. Sending less than the minimum may mean the analysis cannot be completed, or can only be completed in part. Indicative requirements are:

Sample form Typical minimum Notes
Lyophilised peptide One full vial Send unopened where possible
Reconstituted peptide solution 1–2 ml Keep sealed; note the diluent used
Injectable oil 2 ml A sealed vial is preferred
Solution (non-oil) 2 ml Seal securely against leaks
Tablets or capsules 4 units From the same batch
Raw powder Approx. 50 mg Double-bagged
Unknown sample Approx. 50 mg, 2 units or 2 ml Send as much as you reasonably can

The exact requirement for your analysis is confirmed with your order. If you are unsure, or cannot meet the minimum, ask us before sending — in some cases we can work with less.

3. Packaging

  • Seal liquids properly. Make sure caps and crimps are tight. Place the vial or bottle inside a sealed plastic bag so that a leak is contained.
  • Cushion everything. Wrap glass vials in padding and use a box or padded envelope that will survive the postal system. Vials that arrive broken usually cannot be analysed.
  • Protect solids from moisture and crushing. Use a sealed bag or tube for powders; keep tablets and capsules in a rigid container.
  • Keep the sample separate from the paperwork, so that a leak cannot destroy your reference.

4. Labelling — important

  • Write your order reference on the sample itself or on its immediate inner packaging, not only on the outer parcel. Outer packaging is discarded on arrival.
  • If you are sending more than one sample, label each one separately and clearly so they cannot be confused.
  • Do not write personal details on the sample. Your order reference is all we need, and it is all that should appear.
  • Do not rely on the original product label to identify the sample to us — tell us what you believe it is through your account, not on the packaging alone.

5. What not to send

We cannot accept, and you must not send:

  • human or animal tissue, blood, urine or any other biological or clinical specimen;
  • explosive, energetic, radioactive, pyrophoric, corrosive or otherwise dangerous material;
  • anything you are not lawfully entitled to possess or to send;
  • anything whose shipment breaches the rules of the carrier you are using;
  • needles, sharps or used injection equipment;
  • cash, or valuables of any kind.

Where we receive material of a kind we do not accept, or which we reasonably believe is unlawful or unsafe to hold, we may decline to analyse it and dispose of it appropriately, without refund.

6. Shipping

Use a tracked service wherever possible. You are responsible for ensuring your shipment complies with the laws that apply to you, to us, and to any country your parcel passes through, and with your carrier’s terms.

Puralytix does not advise on the legality of sending any particular material, and cannot do so. If you are uncertain, take your own advice before dispatching anything.

Risk remains with you until the parcel reaches us. We are not responsible for parcels lost, delayed, seized, damaged or destroyed in transit.

7. Tell us it is on the way

Once your parcel is dispatched, add the tracking number, carrier and any relevant sample details in your account dashboard. This lets us anticipate arrival and book your sample in promptly. Your order status will move to Awaiting sample until it arrives.

8. What happens on arrival

We match the parcel to your order using your reference, record its condition, and book the sample in. Your order status moves to Sample received and then to In analysis once work begins. Turnaround times run from the point of booking in, not from dispatch.

If a sample arrives damaged, leaking, insufficient in quantity, or without an identifiable reference, we will contact you to agree how to proceed before doing anything further.

9. Retention and disposal

Analysis consumes or alters sample material, and samples are not returned. Any material remaining after analysis is held for a limited period so that re-analysis or a query is possible, and is then disposed of appropriately. You may ask us to dispose of remaining material sooner.

10. If something goes wrong

If your parcel appears to have gone astray, if you have sent the wrong material, or if you realise you omitted your reference, contact us as soon as you can with your order reference and tracking number. The sooner we know, the more likely we are to be able to help.

Questions about this document? Contact Puralytix.
Related documents: Terms & Conditions, Privacy Policy, Cookie Policy, Report Disclaimer and Refund & Cancellation Policy.