Sample Preparation Guide

Everything you need to know about preparing and shipping your peptide samples for testing.

1

Sample Requirements

We accept peptide samples in lyophilised (freeze-dried) powder or reconstituted solution form. Each sample should meet the following minimum requirements:

HPLC PURITY 1-2 mg minimum
LC-MS IDENTITY 1-2 mg minimum
ENDOTOXIN (LAL) 0.5 mg minimum
CONTAINER Original vial preferred
Sending the entire vial is easiest and avoids contamination during transfer. If you need to keep some, ensure the sample portion is stored in a clean, airtight container.
2

Label Your Samples

Proper labelling ensures the lab can match each sample to the correct order. This is especially important for multi-sample orders.

  • Write your Order Reference (e.g., GL-A3F7B2-KPVX) on the outer package
  • For multi-sample orders, label each vial with its Item Reference shown on your packing sheet
  • Include a printed copy of your packing sheet (downloadable from your order confirmation)
3

Package Securely

Peptides are sensitive to heat and moisture. Proper packaging protects sample integrity during transit.

  • Place vials in a small sealed bag (ziplock or similar)
  • Wrap with bubble wrap or tissue to prevent breakage
  • Use a padded envelope or small box for outer packaging
  • No cold chain or ice packs required for lyophilised powder, ambient shipping is fine
Reconstituted samples: If sending peptide in solution, ensure the vial is sealed tightly and packed upright. Consider using a cold pack for transit times over 48 hours in warm weather.
4

Ship to the Lab

The shipping address is shown on your payment confirmation page and packing sheet. You can also find it in your confirmation email.

RECOMMENDED DHL or Deutsche Post tracked shipping
ALSO ACCEPTED UPS, FedEx, DPD

The main lab is a staffed address, so any tracked courier service is fine, signature or not.

After dispatching, enter your tracking number on your order confirmation so we can monitor delivery. Analysis begins as soon as your sample arrives.
5

Endotoxin Orders

If your order includes endotoxin (LAL) testing, it's performed at a specialist facility. You'll see a separate shipping address on your confirmation page if this applies to your order.

  • Combined orders: send HPLC/LC-MS samples to the main lab and endotoxin samples to the specialist lab — two shipments
  • Endotoxin-only orders: send directly to the specialist lab — one shipment
  • Both addresses are clearly labelled on your payment confirmation and packing sheet
6

What Happens Next

Once the lab receives your sample, analysis begins.

PURITY (HPLC) 5-7 business days
COMBINED (HPLC+LC-MS) 5-7 business days
EXPRESS 3-5 business days
ENDOTOXIN (LAL) 5-7 business days
Sample disposal: Samples are consumed during analysis and any remaining material is securely disposed of. We do not retain or return samples.

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