Blood testing Flashcards
What color is the KM presumptive test?
Pink
What chemical is used in the Kastler-Meyer (KM) test?
phenolpthalein
What color is the Benzidine (Adler) test?
Blue/dark blue
What color is the TMB test?
Green/blue green
What color is the Hemastix?
Green/Blue green
What color is luminol?
Fluoresces blue
What presumptive blood test is highly sensitive but not specific?
Luminol
What presumptive blood test is highly specific?
KM test
Why is alcohol used in the KM processing?
to increase the tests sensitivity
What would indicate a failed or bad KM test?
if pink develops on the swab after adding the phenolphtalein
When do you add hydrogen peroxide to the swab during a KM test?
During the last step, after confirming the test is good
What doe PCR stand for?
polymerase reaction chain
What does PCR do?
makes multiple copies of DNA from a small sample in a short amount of time
What does STR stand for?
short tandem repeat
What can STR testing determine?
1) gender
2) genetic markers using multiplex PCR
