Sample declaration
Tell us what you're sending.
Declare each vial before you post it. We assign every vial a PTA tracking number. That number, and nothing about you, is what the laboratory sees.
We only accept unopened vials in lyophilised powder.
Declared.
Write the PTA number on each vial before you post it. It is how we match your vial to your result, and it is all the laboratory ever sees.
We've emailed you the packing and postage instructions, including the address to send to.