Chapter 2: Specimen Collection and Processing

Question 1

How many stool samples should be collected when following the typical O&P collection protocol?

Answer 1

3

Question 2

What is the purpose of fixatives for the collection of stool samples?

Answer 2

Preserve the morphology of protozoa and prevent further development of helminths

Question 3

Which of the following characteristics is observed during the microscopic examination of stool specimens?

Answer 3

Consistency, Color and Adult worms

Question 4

Which of these procedures is involved in the microscopic examination of stool specimens for parasites?

Answer 4

Performing a concentration technique

Question 5

The specific gravity of the zinc sulfate solution used for the flotation of protozoan cysts and certain parasites egg should be

Answer 5

1.18

Question 6

True or False: Thick blood smears for malaria are recommended for specimen identification

Answer 6

False

Question 7

True or False: Giemsa is the preferred stain for the detection of blood parasites.

Answer 7

True

Question 8

True or False: Concentration methods may be used to detect malarial parasite.

Answer 8

False

Question 9

True or False: The identity of a parasitic organism may usually be obtained more reliably by serologic tests than any other means.

Answer 9

False