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Test Code OAP Ova and Parasite Exam

Important Note

Submission of more than three consecutive specimens for ova and parasite examination will require consultation with the laboratory before testing will be performed.

 

Inpatients with suspected parasitemia should be tested before the 4th inpatient day.  All Inpatients with testing requested on or after the 4th inpatient day will require laboratory authorization before testing will be performed.

Infectious

Performing Laboratory

YRMC, Microbiology

Day(s) Test Set Up

Monday through Friday.

Testing schedule: once per day.

Specimen Requirements

Fresh fecal specimens must be placed in 10% formalin and PVA (polyvinyl alcohol) within 2 hours of collection. Unpreserved specimens will be accepted from Inpatients and ER patients only.

 

Outpatient stool specimens must be submitted in preservative (10% formalin and PVA). Unpreserved stools from outpatients will not be accepted for Ova and Parasite testing.

 

For instructions on submitting specimens other than stool for parasite examination, please contact Yuma Regional Medical Center Microbiology Department.

Reasons for Rejection:

  • Any sign of leakage.
  • Improperly labeled specimens.
  • More than one sample collected in a 24 hour period.
  • Any sign of contamination (water, urine, non-fecal debris)
  • Barium is present
  • It is known that the patient had been taking nonabsorbable anti-diarrheal drugs, mineral oil based laxatives, or antimicrobials within 1 week.
  • Liquid fecal samples greater than 2 hour after passage, if not preserved.
  • Formed stools greater than 24 hours after passage, if not preserved.
  • Unpreserved stools submitted for testing from Outpatients.

Specimen Transport Temperature

Ambient temperature.

 

Stool specimens must be preserved or arrive in the laboratory within 2 hours of collection.

Reference Values

No Ova or Parasites seen.

Test Classification and CPT Coding

87177 – Ova and parasites, direct smears, concentration and identification.

87209 – Smear, primary source, complex special stain for ova and parasites.

Collection Instructions

Refer to Specimen requirements for collection instructions

Methodology

Concentrated wet preparation examination.

Trichrome stained permanent smear examination.

Referral of parasites seen for identification may be indicated.

Loinc Code

43227-8