An improved method to estimate firing distance on human body surfaces is de
scribed. The novel part of the method includes a chemical test in addition
to the traditional visual and microscopic examinations of the gunshot wound
s. This chemical test consists of a transfer of the gunpowder residues from
the area of a gunshot wound to an adhesive lifter; the residues are then v
isualized as total nitrite after alkaline hydrolysis by the Modified Griess
Test (MGT). When cadavers are in an advanced stage of decomposition or whe
n gunshot wounds are in hairy areas, the information obtained by this chemi
cal test can be crucial for shooting distance evaluation. In other cases it
may improve the accuracy of the examination. In some cases, the results ob
tained by this test may assist in the discrimination between entrance and e
xit gunshot wounds.