397.675  Criteria for involuntary admissions, including protective custody, emergency admission, and other involuntary assessment, involuntary treatment, and alternative involuntary assessment for minors, for purposes of assessment and stabilization, and for involuntary treatment.--A person meets the criteria for involuntary admission if there is good faith reason to believe the person is substance abuse impaired and, because of such impairment:

(1)  Has lost the power of self-control with respect to substance use; and either

(2)(a)  Has inflicted, or threatened or attempted to inflict, or unless admitted is likely to inflict, physical harm on himself or herself or another; or

(b)  Is in need of substance abuse services and, by reason of substance abuse impairment, his or her judgment has been so impaired that the person is incapable of appreciating his or her need for such services and of making a rational decision in regard thereto; however, mere refusal to receive such services does not constitute evidence of lack of judgment with respect to his or her need for such services.