No, although depression may be caused by a serotonin imbalance, this cannot be diagnosed with a blood test. In order for that to work, you would have to look at the amount of seretonin actually in the brain.
a simple blood test
blood test
serum analysis test for
A maternal blood test is used to diagnose listeriosis.
A depression test is a screener that can help diagnose whether someone is depressed. Usually it takes the form of a questionnaire in which the patient rates how he has felt recently.
It would be helpful if there were an accurate blood test for the diagnosis of depression. However, there is no valid laboratory test, to date. (It was once thought that the dexamethasone suppression test was an accurate blood test for depression - and many were ordered in the 1970s. It proved to be both inaccurate and invalid.) The best way to diagnose depression is by a combination of clinical interviewing and scale scoring (HAM-D or Hamilton Depression Scale, or MADRAS, which is the the Montgomery-Asberg Depression Rating and Assessment Scale). The do-it-yourself Beck Depression inventory (BDI) can be downloaded or viewed online. If depression is suspected, it wouldn't be a bad idea to schedule an appointment with a qualified therapist. If depressive symptoms are moderate to severe, medication can help to supplement the work of therapy (from a primary care physician or psychiatrist).
How do teachers diagnose a learning disability? He can't diagnose the disease if he doesn't know its symptoms. A blood test is used to diagnose thyroid problems.
Get a blood test at the doctor.
A PSR blood test measures the level of protein S, a protein that helps regulate blood clotting, in the blood. This test is often used to diagnose conditions related to abnormal blood clotting and to monitor treatment effectiveness.
A genetic blood test can reveal the existence of certain substances in people who have a tendency to develop narcolepsy. Positive test results suggest narcolepsy.
Serotonin--a chemical in the brain that regulates mood, sleep, appetite and aggression--is difficult to measure. It is not possible to directly measure levels of serotonin in the brain of a living person. Because the cells that produce serotonin either reabsorb it or release it into the bloodstream, where it breaks down into different compounds, researchers have developed a test that can measure the amount of these compounds in the blood to estimate serotonin levels. Only a doctor can perform these tests. Interestingly, doctors test for these compounds because they are leading indicators of a specific type of cancer in the digestive system--not for depression or mental health.
It took 3 muscle biopsies to diagnose my Pompe. Although I believe a blood spot test is the best way to diagnose it.