Forensic Science Technician Exam
Questions and Correct Answers (Verified
Answers) || LATEST UPDATE 2026
Custody -CORRECTANSWER physical possession or control to prevent tampering with
or alteration of its characteristics.
Data defensibility -CORRECTANSWER a process that provides sufficient assurance,
both legal and technical, that assertions made about a sample and its measurable
characteristics can be supported to an acceptable level of certainty. (thought of as the
'proof' that a sample represents the material from which it was taken, sample integrity
was maintained, and valid results gained):
good experimental design setup, measurement with known uncertainty, representative
sample, good handling methods, data recording, quality control -CORRECTANSWER
what are 6 principal elements of data defensibility besides chain of custody
sample -CORRECTANSWER a portion of an environmental or source matrix that is
collected and used to determine the characteristics of that matrix.
,chain of custody -CORRECTANSWER process whereby a sample is maintained under
physical possession or control during its entire life cycle, that is, from collection to
disposal
chain of custody record -CORRECTANSWER documentation providing evidence that
physical possession or control was maintained during sample chain of custody.
destructive testing -CORRECTANSWER · testing, examination, reexamination,
disassembly, or other actions likely to alter the original, as-found nature, state, or
condition of items of evidence as to preclude or adversely affect additional examination
and testing.
spoliation of evidence -CORRECTANSWER the loss, destruction, or material alteration
of an object or document that is evidence in a legal proceeding by one who has the
responsibility for its preservation. Can occur when evidence is moved, changed, or
there is an alternation at the scene.
lab case number, agency case number, agency, date, name of person receiving, listing
of items -CORRECTANSWER what are 6 things that need to be recorded on a
permanent lab record when receiving evidence
,preserve chain of custody and notify submitter -CORRECTANSWER if when examining
evidence you have received and you find improper packaging that has diminished or
destroyed the value of the evidence what should you do?
secure -CORRECTANSWER evidence should be in a ____________ location while it is
int he custody of the lab
what evidence is in the lab, its status, date it is removed -CORRECTANSWER when
documenting evidence, what three things should be included on the laboratory current
record?
true -CORRECTANSWER t/f: do not alter any more than necessary to obtain a valid
analysis
true -CORRECTANSWER t/f: maintain an adequate portion of the evidence for testing
by other methods or by other labs.
separately from other evidence -CORRECTANSWER seized drugs should be packaged
how
air dry and paper container -CORRECTANSWER moist/wet evidence containing
biological material should be packaged how
, amount; condition -CORRECTANSWER Success of DNA results dependent on the
________ of and ____________ of evidentiary material
blood or urine -CORRECTANSWER In cases of sexual assault in addition to orifice
swabs, _______ or _______ testing can be done to determine if the victim was
drugged.
fentanyl -CORRECTANSWER you should treat all evidence as if it is
aerosol, biological, and chemical hazards -CORRECTANSWER what three things
should you be sure to wear PPE around
removed; unloaded -CORRECTANSWER lithium batteries should be ______ prior to
submission and firearms should be ________
true -CORRECTANSWER t/f: as few people as possible should handle samples
package -CORRECTANSWER When employing a common carrier, the use of padlocks
or custody seals should be considered. If padlocked, send the key in ____________
package.
Questions and Correct Answers (Verified
Answers) || LATEST UPDATE 2026
Custody -CORRECTANSWER physical possession or control to prevent tampering with
or alteration of its characteristics.
Data defensibility -CORRECTANSWER a process that provides sufficient assurance,
both legal and technical, that assertions made about a sample and its measurable
characteristics can be supported to an acceptable level of certainty. (thought of as the
'proof' that a sample represents the material from which it was taken, sample integrity
was maintained, and valid results gained):
good experimental design setup, measurement with known uncertainty, representative
sample, good handling methods, data recording, quality control -CORRECTANSWER
what are 6 principal elements of data defensibility besides chain of custody
sample -CORRECTANSWER a portion of an environmental or source matrix that is
collected and used to determine the characteristics of that matrix.
,chain of custody -CORRECTANSWER process whereby a sample is maintained under
physical possession or control during its entire life cycle, that is, from collection to
disposal
chain of custody record -CORRECTANSWER documentation providing evidence that
physical possession or control was maintained during sample chain of custody.
destructive testing -CORRECTANSWER · testing, examination, reexamination,
disassembly, or other actions likely to alter the original, as-found nature, state, or
condition of items of evidence as to preclude or adversely affect additional examination
and testing.
spoliation of evidence -CORRECTANSWER the loss, destruction, or material alteration
of an object or document that is evidence in a legal proceeding by one who has the
responsibility for its preservation. Can occur when evidence is moved, changed, or
there is an alternation at the scene.
lab case number, agency case number, agency, date, name of person receiving, listing
of items -CORRECTANSWER what are 6 things that need to be recorded on a
permanent lab record when receiving evidence
,preserve chain of custody and notify submitter -CORRECTANSWER if when examining
evidence you have received and you find improper packaging that has diminished or
destroyed the value of the evidence what should you do?
secure -CORRECTANSWER evidence should be in a ____________ location while it is
int he custody of the lab
what evidence is in the lab, its status, date it is removed -CORRECTANSWER when
documenting evidence, what three things should be included on the laboratory current
record?
true -CORRECTANSWER t/f: do not alter any more than necessary to obtain a valid
analysis
true -CORRECTANSWER t/f: maintain an adequate portion of the evidence for testing
by other methods or by other labs.
separately from other evidence -CORRECTANSWER seized drugs should be packaged
how
air dry and paper container -CORRECTANSWER moist/wet evidence containing
biological material should be packaged how
, amount; condition -CORRECTANSWER Success of DNA results dependent on the
________ of and ____________ of evidentiary material
blood or urine -CORRECTANSWER In cases of sexual assault in addition to orifice
swabs, _______ or _______ testing can be done to determine if the victim was
drugged.
fentanyl -CORRECTANSWER you should treat all evidence as if it is
aerosol, biological, and chemical hazards -CORRECTANSWER what three things
should you be sure to wear PPE around
removed; unloaded -CORRECTANSWER lithium batteries should be ______ prior to
submission and firearms should be ________
true -CORRECTANSWER t/f: as few people as possible should handle samples
package -CORRECTANSWER When employing a common carrier, the use of padlocks
or custody seals should be considered. If padlocked, send the key in ____________
package.
