Often, when the cause of depression is uncertain to the doctor and the doctor is unable to determine the exact depression treatment, he might conduct tests by means of which he can diagnose the condition. Some of the common tests include:

Physical exam:

The main motive of this test is to find the underlying physical cause behind depression. During this test, the doctor primarily focuses on the nervous and the hormonal systems. Major health problems like hypothyroidism, which is the main cause of depression is also often tried to be identified in this case.

Lab tests:

Often, when you enquire about depression, the doctor will conduct a lab test to determine the exact cause of depression. This is usually done after a physical test, when the doctor might ask you certain questions, and conduct this lab test to determine the other possible causes of depression. Blood tests are done in this case to check out the medical conditions of depressions. Things such as anaemia, hormone and even thyroid leels might be checked.

Other Tests:

Based on the symptoms of depression, other standard tests might also be performed like CT scan, ECG, EEG etc to check out the functions of different parts of the body, and identify the main cause of depression.

These different kinds of diagnosis are conducted on different symptoms, and with the help of these diagnoses, it certainly becomes easy for the doctor to understand the underlying cause of depression and look for a treatment.