<prompt> Death by suicidal gunshot wound usually can be confirmed byFinger print on the gunBlood on the gunGun in handGunshot residues in the hand  <response>: 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 