Product tampering, as detailed by the Federal Anti-Tampering Act of 1983 (1
), is a felony punishable by both fine and imprisonment. The rationale for
product tampering ranges from pranks and attention seeking acts to extortio
n, terrorism, and homicide. One such case submitted for analysis involved f
our medical syringes found in a supermarket and suspected of being used to
tamper with various products. One of the syringes was found piercing a pear
while the other three syringes were found with needles exposed in other pa
rts of the supermarket. Microscopic analysis was used to collect residue fr
om the syringe barrels and the pear. A multidiscipline approach involving S
LM, PLM, including microchemical analysis, FTIR, and GC/MS analyses, perfor
med on the residual liquid found in the syringe barrels and in the suspect
pear, confirmed the presence of cocaine. This multidisciplinary approach is
often necessary when there is a possible health risk to the public and rap
id response is important. With this approach, it was quickly determined whi
ch drugs or poisons were used in this tampering.