U1 - Lab Safety and Specimen Handling to Disposal Flashcards
Toxic substances are handled under?
a safety hood
parasites that will be thriving in the host
helminths
type of host during adult stage
definitive host
type of host during larval stage
intermediate host
type of host during the egg stage
parasite in diagnostic stage
types of helminth
- nematode
- trematode
- cestode
T/F:
When a specimen is “fixed”, it means that everything is already killed; hence, it is not infectious because it is already preserved.
True
best way to preserve the eggs and prevent development
warm/ heated 10% formalin
key in the laboratory
safety
difference between standard and universal precautions
standard: everything is infectious
universal: all samples are highly infectious
What should be practiced in the laboratory?
standard precautions
potential risks in the para lab
- ingestion of eggs/ ova
- skin penetration of infective larva
- infection of non-parasitic agents
T/F:
fixed stool specimens in formalin is no longer infectious
False;
may still be infectious
can still develop and are infectious even in preserved in formalin
Ascaris eggs
special factor in blood specimen collection
timing
T/F:
Blood should be collected before treatment is initiated.
True
Why is timing important?
to ensure that the parasite will not be missed
When these are suspected, blood smears should be examined without delay.
Malaria and Babesiosis
T/F:
Only one blood smear is needed.
False;
multiple blood smears might be needed
reason why multiple blood smears are needed
Parasitemia or the presence of parasites in the blood could actually fluctuate
exhibit periodicity and is seen in lymphatic fluids
Microfilariae
What type of blood samples are collected to detect parasitic infections?
venous and capillary
multiple specimens recommended for adequate yield of 1 parasite
fecal specimen
Criteria for fecal specimen container
- clean
- wide-mouthed
- made of waxed carboard or plastic
- has a tight-fitting lid