The aim of the tests are to be sure that the correct cancer is diagnosed and to find out exactly where the tumour is and whether it has spread to other parts of the body.

The tests involved may delay the start of treatment for a few days, but without this information the right treatment cannot be chosen. Usually, starting treatment is not a matter of urgency. It is much more important to get all the necessary information to ensure that the right treatment is given.

Some of these tests are repeated during the course of treatment to study progress and to check for any side effects of treatment. There are also other tests to ensure your child is well enough to receive chemotherapy.

1. Blood tests
   To check effects of cancer and of treatment
    
2. Bone marrow aspirate / Trephine biopsy
   
   
3. Biopsy
   This test is done by inserting a special needle through the skin (needle biopsy) or by doing a small operation (open biopsy). The specimen obtained is examined by the histopathologist (person who studies body tissues) who can tell whether or not it is malignant and exactly what type of tumour it is. Sometimes the surgeon may be able to remove the whole tumour rather than just taking a biopsy.
4. Echocardiogram (ECHO)
   Ultrasound examination to assess your child’s heart function
    
5. Hearing test
   This test is done prior to chemotherapy that may affect part of your child’s hearing.
    
6. Lumbar puncture
   
   
7. Radiological tests