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Test Code OVP Ova and Parasite Examination, Stool

Important Note

 

Barium interferes with test procedure; a waiting period of 1 week before stool collection analysis is recommended.

 

Methodology

Test includes concentration for ova and parasite microscopic
examination, trichrome staining, Giardia antigen and
Cryptosporidium antigen.

 

Patient should have 1 or more of the
following:

 

1. Travel history outside of the U.S.

2. International adoption

3. HIV positive

4. Exposure to parasites other than Giardia duodenalis and
Cryptosporidium parvum

 

If patient does not meet 1 of the above criteria, Contact provider or unit to clarify.

Performing Laboratory

Bronson Laboratory Services-Microbiology

Specimen Requirements

  • Two or three specimens collected on consecutive days
    are required to rule out intestinal parasite infection. If specific
    pathogens are suspected, this should be noted on request form for
    processing. 
  • No more than 3 specimens will be accepted without prior
    consultation with the laboratory.
  • Specimen submitted from inpatient’s after the forth hospital
    day will not be accepted withiout prior consultation.

 

 

If pinworm is suspected, a pinworm specimen should be
submitted. See #PWOR Pinworm Preparation for more information.

 

Causes for Rejection: Unpreserved specimen; or
specimen obtained with mineral oil, castor oil, bismuth, iron, or
magnesium compounds. 

 

Specimen Type: Stool, preserved

Container/Tube: Protofix Collection Kit (1
vial)

Collection Instructions:

1. Fill vial to line indicated in kit.

2. Specimen obtained with a warm saline enema or Fleet
Phospho-soda is also acceptable.

3. Label vial with patient’s name, date of birth, and date
and time of collection.

 

 

 

Specimen Transport Temperature

Stool in Protofix Collection Vial - Ambient 30 days.  Refrigeration OK. 
Liquid Stool in Sterile Container - Ambient 30 minutes

 Soft/Formed Stool in Sterile Container - Ambient 1 hour

Reference Values

Normal finding: no ova or parasites seen

Abnormal finding: parasite identified

Day(s) Test Set Up

Monday through Friday

Test Classification and CPT Coding

87177-Ova and parasite concentration and ID

87209-Trichrome stain

87272-Cryptosporidium Antigen

87269-Giardia Antigen