Death by suicidal gunshot wound usually can be confirmed by

Presence of Gun shot residue suggests the possibility of use of a firearm. - Various tests for detecting GSR * Dermal Nitrate test or Paraffin test Harrison and Gilroy test Neutron activation analysis Atomic absorption spectroscopy (AAS) Flameless atomic absorption spectrophotometry (FAAS) * Scanning Electron Microscope- Energy Dispersive X-ray spectrometry (SEM-EDX) (Most specific)