OVA & Parasites

NSPHL Service Request Form

Data Value
Method Formalin Concentrate and Trichrome Stain
CPT Code 87177, 8720
Test Scope Includes concentration of material and examination of specimen for ova and parasite by conventional iodine/saline and Trichrome staining. This will not detect Cryptosporidium, Cyclospora or Microsporidium.
Preferred Specimen Stool
Other Acceptable Specimens Sputum or Urine
Required Specimen Volume 5 mLs stool or sputum, 15 mLs Urine
Minimum Specimen Volume >2 mLs stool or sputum
Specimen Container
  • Stool or Sputum Sample: Two vial kit with 10% Formalin and PVA (Deposit stool sample in each container)
  • Urine Sample: Use standard urine cup with screw cap and collect sample at mid-day.
Specimen Identification Label container with patient's first and last name, DOB and date/time of collection.
Special Instructions
  • Stool specimens should be put into the two vials immediately after passage and thoroughly mixed with the solution up to the fill line.
  • Multiple specimens should be collected on separate days. At least 3 specimens, one sample collected every 48 hours for a period of 5-6 days. Label and date each specimen as collected.
  • Do not refrigerate the samples, store at room temperature
  • Consult the microbiology department for handling of samples other than stool.
  • Include any pertinent clinical and travel history on the test requisition.
Shipping Requirements Store and ship at room temperature
Sample Rejection Criteria
  • Leaking Specimens
  • Mislabeled/Unlabeled specimens
  • Specimens delayed in transport
  • Dry specimen
  • Overfilled or mixed improperly
  • Specimen containing substances such as bismuth, barium, magnesium, or mineral oil.
Turn-around-time 72 hours