BPA II Test I Flashcards
The area where you find the greatest amount of bloodshed is likely
the beginning point of the incident
The original purpose of Hemastix is
to detect blood in urine
The ALS should be used before
the application of chemical reagents
The proper documentation method of photographing bloodstains is
overall, midrange, and close up
Documentation serves the following functions:
verification of scene integrity, recording relationships of evidence within the scene, allowing outside analysis
Roadmapping is
a method completed after the scene has been processed
An ALS is required when using
fluorescein
The written report should be:
reviewable, testable and repeatable
Luminol is
not a confirmatory test for blood
Flourescine is
a presumptive test for blood
Luminol can produce
false positives
Blue Star allows the investigator to
view stains with the naked eye
All chemical enhancement reagents are
presumptive tests
Animal blood will produce
the same reaction as human blood
Leuco Crystal Violet should only be applied to
dry blood
An expiration pattern is
an exclusion to high energy impact spatter
The greater the force,
the smaller the individual blood drops will be
The mathematical formula used to determine impact angle is
width divided by length then 2nd sine
The tangent method is used when
determining the area of origin
cyanoacrelate fuming chamber is
not used to detect blood
All bloodstains range from
elliptical to circular in shape
The Rule of Evidence 702 may
allow “junk science” into the courts
Low energy impact spatter results in
stains approximately 4 mm and larger
High energy impact spatter is normally associated with
gunshot types of injuries
The enhancement of faint and dilute bloodstains using chemical reagents is
NOT used for providing confirmatory results in a timely manner
