Diagnostic Procedures

Question 1

Clearance Period

Antacids, antidiarrheals, barium, bismuth, laxatives:
Antimicrobial agents:
Gallbladder dyes:

Answer 1

7-10 days
2-3 weeks
3 weeks

Question 2

Number of specimens examined before confirming a truly (-) result

Answer 2

3 specimens (collected on alternate days w/n 10 days)

Question 3

Preservative: Stools beyond 1hr

Answer 3

Refrigeration

Question 4

Preservative: >24 hrs

Answer 4

Two vial system
1. Formalin
2. Polyvinyl Alcohol

Question 5

Ratio of stool to preservative

Answer 5

1:3

Question 6

Preservatives for wet mount and concentration technique

Answer 6

10% formalin
Merthiolate-iodine-formalin
Sodium acetate-acetic acid formalin