The tests you had before starting immunoglobulin were designed to check whether you would need immunoglobulin for life. However, sometimes immunoglobulin is recommended for people whose immune deficiency may only be temporary. This can happen in small babies or when the immune system had been damaged by medications, for example. It’s also possible you were given immunoglobulin for a condition that is no longer regarded as needing immunoglobulin. In these situations, there are blood tests that can be done to check how well your immune system is working. If you do stop immunoglobulin, your immunology team will monitor you closely.