swab

A second stage of the analysis has already taken saliva swabs from women to measure levels of the stress hormone cortisol.

They wouldn't have had my statement from the time, they wouldn't have had photographs, and they wouldn't have had all the swabs and things that they took.

Potential donors send off a cheek swab sample and wait to see if they are a match for anyone.

However, he reiterated that details of any athletes who may have been prevented from competing as a result of the test, carried out via cheek swab, will remain confidential.

It is a cheek swab or blood test, which is done once in an athlete's life by each national federation.