Test Overview
Test Methodology

Microscopic Exam

Test Usage

Establish the diagnosis of parasitic infestation

Reference Range *

No parasites seen

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

The specimen will be examined for parasites only. One negative result does not rule out the possibility of parasitic infection. It is unlikely that trophozoites can be detected in specimens which are not sent in the appropriate transport vial.

Test Details
Days Set Up
Monday - Friday
Analytic Time

8 - 24 hours

Soft Order Code
MiChart Code
Ova and Parasite Exam, Aspirated Sample
  • Aspirated specimen, Ova and Parasites
  • Cyst Aspirate, Ova and Parasites
  • Duodenal Aspirate, Ova and Parasites
  • Hydatid Cyst, Ova and Parasites
  • Liver Aspirate, Ova and Parasites
  • Lung Aspirate, Ova and Parasites
  • OPSN
  • Parasite Exam, Aspirate
  • Parasitology Examination, Aspirate
Specimen Requirements
Collection Instructions

Collect liver aspirate or drainage, cyst drainage, or duodenal aspirate specimen following sterile preparation of aspiration site. DO NOT ASPIRATE POSSIBLE ECHINOCOCCAL CYST as leakage may cause anaphylactic shock. Specimens to rule out Echinococcus should be handled carefully as the organism is highly infectious. If Entamoeba histolytica is suspected, send the last part of the aspirate. Put actual specimen, not saline washings, into the O&P transport vial and emulsify specimen well. Transports may be refrigerated or kept at room temperature for up to 1 week. Sputum exam is done by special request; please contact the MLabs Client Services Center before sending fresh sputum. Fresh specimens should be kept at room temperature and sent to the laboratory within 30 minutes of collection. Indicate specific parasite that is suspected, specimen source, and collection date/time. If an unacceptable specimen is received, the client will be notified before disposal of the original specimen.

Normal Volume
5 mL
Minimum Volume
5 mL
Additional Information

Test includes direct examination (OPSN) or concentration if adequate specimen is received. White blood cells, red blood cells and Charcoal-Leyden crystals are reported if present.

CPT Code
Fee Code