Is there a way to be tested for osdd?

I been having lots of time gaps/amnesia, I do know I have three alters (one is female, male, and non-binary). My bf is the one who told me about osdd and said I should get tested to see
Asked by Maverick

Dissociation disorders often occur due to early trauma. Like any diagnosis, there needs to be specific symptoms/criteria present either through self-report and/or through collateral (friends, family, clinicians) in order to make a proper diagnosis. Many people experience dissociation at times; however, there are those when it has become so life disruptive it is considered a disorder and may require treatment. Common types of dissociative symptoms are, depersonalization-feeling detached from the body or a feeling of being outside their body watching themselves, derealization-feeling that the world is not real or has changed in some way, and dissociative amnesia-loss of time or unable to recall specific events that can't be better explained by the use of a substance. In order to get a better understanding of what you are experiencing, I would consult a psychologist who can provide psychological assessments to determine why you are experiencing a loss of time. There is not a specific test that I know of that can say yes, you have a dissociative disorder however, assessments, history, and dialogue with a trained professional can assist in determining whether a dissociative disorder would be an appropriate diagnosis. Other disorders that are marked by dissociation are personality disorders such as borderline personality disorder (BPD). BPD's criteria consist of fear of abandonment, dysregulated mood, impulsive behaviors, self-harming behaviors, dissociation, etc... Posttraumatic stress disorder (PTSD) is another disorder that can be associated with dissociation. In order to know for sure, I would contact a psychologist, explain your concerns, and be evaluated. There are treatments such as Dialectical Behavioral Therapy (DBT) that have proven to be very effective for these types of disorders. Providing specific, thorough details about your history, such as, how often you feel you have "time gaps/amnesia" and what are the circumstances, family dynamics (parents divorced, married, multiple marriages, abusive, caring or loving), past traumas (especially during early development), substance use (how much, how often), past hospitalizations, past diagnoses, losses, stressors, etc...will be an important part of this process. The more information you provide the easier it will be to make a proper diagnosis. I would suggest you begin to log your gaps in time, note the circumstances surrounding gaps, and what you might have been thinking or feeling prior to the episode. This will be useful information to the person who evaluates you. 

I hope you find this information useful.