This test is designed to discover clues in your blood as to why you may be feeling unusually tired or fatigued. It will give you information on several common things that doctors look for in blood tests that may give physical reasons for tiredness. It includes a full blood count and tests for vitamin D, iron levels including ferritin and thyroid function tests.

About the test: Understanding your Testosterone levels may help if you are experiencing low sex drive, infertility, erectile dysfunction and more. Testosterone levels should also be checked regularly by anyone using testosterone supplements for any reason.