"clinical indication" - what´s that?
Basically it means if the examining doctor has any CLINICAL ( = medical ) reason to believe that a change has occurred, and that re-testing is therefore appropriate. There are parts of the medical examination where this is very right and proper. A good example would be measuring someone's peak flow rate if wheezing is heard in the lungs, or if a prolonged bout of coughing were to be mentioned. However, in the case of CV this will ALMOST NEVER be justified (see my post #796 of 3-6-08 ).