Often, the outcome of the treatment depends on how less or more the cancer has grown. If the test is done early on, the treatment is started on time and the cancerous growth can be contained. Sometimes the cancerous growth reaches the parts of the body where treatment is not possible. In some families, there is a history of cancer. In such cases, for example, prostate cancer in men, if you have reached or crossed the age of 50, just to be on the safer side, you should get a prostate cancer test done, preferably every two or three years. Similarly, if there is a history of breast cancer or ovarian cancer among women in the family, even when there are no signs, routine checks must be conducted. An ovarian cancer test every 2-3 years is recommended. Other than these, if there are some abnormal symptoms that you cannot make sense of, especially when you feel that you have been exposed to certain carcinogens (chemicals, smoking, alcohol, high-risk food like red meat or exposure to radiation), you should definitely get a cancer test done as soon as possible.