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Cancer tests and investigations



A photo of a patient using the PET scanner at St Thomas'Tests and investigations help to find out a number of different things, such as:

  • if you have cancer
  • if you do have cancer, what type, how far it has spread (its stage) and where it is
  • what treatment you need
  • how well you cancer is responding to treatment
  • whether cancer remains after you have finished a course of treatment.

Most tests and investigations are carried out during an outpatient visit to the hospital. Many involve a short appointment with a specialist. You may have a range of tests and investigations at the same appointment.

The main investigations include: