BALTIMORE, MD ( Ivanhoe Newswire) -- We know our blood pressure number and our cholesterol number, so why not know our mental health number? Untreated mood disorders cost our healthcare system more than $70 billion a year.

Some people look at their apps as a form of entertainment, but Dr. Steven Daviss says this app could change your life.

 "This is really the first time that we've had a single number that we can attribute to mental health," Dr. Daviss told Ivanhoe.

Called What's my M3, he says the three minute test has been medically proven to reliably screen for depression, anxiety, bipolar disorder and PTSD.

Online or on your phone, the medical monitoring of mood checklist creates a score for each disorder and allows you to share the information with your doctor. People who score zero to 33 have a lower risk of having one of those disorders.

"If the score's above 33 then the chances of them having a mental health problem is 85-percent," Dr. Daviss said.

You rate your feelings based on statements like 'I feel dull, numb, or detached', "I can't get certain thoughts out of my mind." And "I am nervous or shaky in social situations."

The test could also help people like Patrick Hendry. Hospitalized 14 times, it took six years to get a bipolar disorder diagnosis.

 "The most telling moment was when I hooked up a hose to the tailpipe of my car," Patrick told Ivanhoe.

Before Patrick found the right treatment, he scored in the sixties on the M3 checklist. now...

 "I've been taking it periodically and so far I've been hitting it dead on," Patrick said.

And this little test could be a big help for doctors too.

 "It gives your primary care physician some objective evidence to help them evaluate whether somebody is suffering from one of these conditions," Dr. Davis said.

What's my M3 is free to take online. it costs two-dollars and 99 cents at the apple app store and android market. all versions of the test use the same 27 item questionnaire.

The doctor also says it's a screening tool only and you should see a doctor for a diagnosis.

Source: The Bridge Study, National Alliance on Mental Illness, North Carolina, "Prevalence Rates: Neurobiological Brain Disorders (NBD), University of North Carolina