Forensic Serology

What is Forensic Serology?

• The study of bones left at a crime scene.

• The study of body fluids and stains remaining at a crime scene (especially blood).

____________in blood can tie a suspect to a crime.

• DNA

• hair

• fluids

Two basic types of blood evidence are:

• phenolphthalein and dried bloodstains

• liquid blood evidence and dried bloodstains

• Luminol and Leucomalachite

Blood stains are not always directly ____________.

• visible

• invisible

What are the four common chemical reagents? Check all that apply.

• Phenolphthalein

• Leucomalachite green

• Tetramethylbenzidine

• Luminol

• Carbon Dioxide

How do you collect fresh liquid blood from a crime scene?

• use hypodermic syringe or pipette; put blood into a vial or use a clean cotton swab and air dry

• scrape into a clean vial, scrape into paper

• air dry at room temperature

How do collect blood evidence from upholstery or rugs?

• cut out section and submit and take unstained sample as control

• use swabs

• use swap or tape lift

How do you collect blood sample from clothing?

• use swap and tape lift

• air dry at room temperature, keep out of direct sunlight, put each item in separate bag

• moisten unused cotton and swab stained area

How do you collect bloodstains on walls?

• moisten unused cotton and swab stained area or tape lift

• cut out section and submit

• take an unstained ample too as a control

• submit items without sampling

How do you collect blood sample from a large stain?

• submit without sample

• sue swabs

• scrape into a clean vial