. 2018 Jun;108(6):777–781. doi: 10.2105/AJPH.2018.304385

TABLE 2—

Source of Identification of Heroin-Related Records: Maryland, 2012–2015

Source of Identification of Record	No. of Deaths
Overall total	2182
Standard surveillance^a
Total standard surveillance	1130
Enhanced surveillance
Total enhanced surveillance	1052^b
Toxicology findings
Presence of 6-monoacetylmorphine	136
Presence of both morphine and quinine	892
Presence of morphine or free morphine and supporting evidence from scene investigation	998
Morphine listed as a cause of death on death certificate and supporting evidence from scene investigation	1042

^{^a}

Heroin listed as cause of death on death certificate.

^{^b}

Counts of subcategories do not sum to the total because some deaths were identified through more than one source.