Is there a trustful test to see if someone has borderline personality disorder?

Structured interview: There is a structured clinical interview for diagnosis of borderline pd (scid ii).

Can Harm 2 Rush This: Consider finding a caring, knowledgeable psychiatrist or clinical psychologist skilled in assessment. Ideally, 2identify personality qualities that r really hurting a person & her/his relationships, it's impt 2spend time getting 2know the person 2be able 2understand whatever "symptoms" they're experiencing in the context of their life history & current circumstances. Can do harm by rushing this.