Due to the long half-life (~36 hr) of clenbuterol, detection methods such as dried blood
spots (DBS) are a potentially suitable method to easily and non-invasively detect doping
misuse of this compound for several days after ingestion. If, and how long, the compound can
be detected by DBS has not yet been investigated but is of interest due to its potential in
doping-control. The aim is to evaluate whether abuse of clenbuterol can be detected at
relevant concentration levels in samples obtained using DBS and to assess the physiological
response to clenbuterol in skeletal muscle..