Collection and Transport

• What are the morphologic forms of protozoa discussed in this section?

  = Cysts and trophozoites
• 1. Which of the following is NOT mentioned as a recommended specimen collection protocol?
  2. a)Collecting three specimens every other day b) Collecting a total of three specimens within 10 days c) Collecting three specimens within 24 hours d) Considering the intermittent shedding of parasites

  = Collecting three specimens within 24 hours
• What can interfere with parasite detection in stool samples?

  = Medications and substances
• Which of the following medications is NOT mentioned as potentially interfering with parasite detection? a)Bariumb) Mineral oilc) Antihistaminesd) Antibiotics

  = Antihistamines
• How should stool specimens be collected to avoid contamination?

  = In a clean container without contamination from urine or toilet paper
• What is the recommended amount of stool for collection?

  = 2 to 5 grams
• What is the importance of proper labeling of the specimen container?

  = To ensure accurate test requisition
• What safety precautions should be followed when handling specimens?

  = Wearing gloves, protective coats, and biohazard hoods
• What is the time frame for examining liquid stool specimens?

  = Within 30 minutes
• What should be done if the time frames for examination cannot be met?

  =  Place the specimen in a preservative
• What are the morphologic forms of protozoa and helminths that can be detected in a properly collected stool specimen?

  =  Trophozoites and cysts

  = Eggs and larvae

  =  Proglottids and adult worms
• What are the following medications may interfere with parasite detection in stool samples?

  = Barium and bismuth

  = Antibiotics and antimalarial medications

  = Mineral oil
• Why should urine be prevented from contaminating the stool specimen?

  = It can destroy some parasites.

  = It can mask parasites during examination.

  =  It can make examination of the sample difficult.
• What information should be included on the specimen container label?

  = Patient's name and identification number

  = Physician's name

  = Date and time of sample collection
• Which stage of protozoan parasites requires a fresh specimen for examination?

  = Trophozoites
• What should be done if the time frames for examination cannot be met?

  = Place the specimen in a preservative