Days Set Up
Monday - Friday
Analytic Time

48 hours
Specimens received on Friday 3pm through Sunday 3pm will have an extended analytic time.

MiChart Code
Ova and Parasite Screen
Soft Order Code

Update Type: Replacement Test

Test Updated: 09/23/2020


Trichrome Stain
Feces, Ova and Parasites
Parasite Exam, Stool
Parasite Examination, Stool
Rectal, Ova and Parasites
Sigmoid, Ova and Parasites
Stool, Ova and Parasites
Feces, Ova and Parasites
Parasite Exam, Stool
Stool, Ova and Parasites

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

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.

Specimen Requirements

Collection Offsite

Collect fresh random stool or sigmoid specimen. Specimens obtained with mineral oil, bismuth, or magnesium compounds are not acceptable. Wait until patient has cleared substance (about 7-10 Days) before collecting stools for examination. Stool specimens MUST be sent in Ova and Parasite transport kit. Emulsify stool specimen thoroughly in transport vial fluid. If necessary, place a urine bag on the patient to prevent urine contamination. Specimen should not come in contact with water. Continue adding stool to the transport until specimen reaches the fill line. Transport kits may be held up to 1 week at room temperature. RECOMMENDED SCREENING: 2 stool specimens, one every other day. Note on requisition if a Cryptosporidium or Cyclospora cayetanensis exam is needed as a special staining procedure must be performed. Indicate specimen source and collection date/time. Specimens contaminated with urine, water, or interfering substances such as barium, bismuth, Metamucil, caster oil, or mineral oil are unacceptable. If unacceptable specimen is received, the client will be notified before disposal of the original specimen. Only submit 1 specimen per day.
See MLabs Stool Specimen Collection Instructions available online at for patient instructions.
Gastrointestinal panel (GIPAN) should be considered at additional cost, when multiple stool tests are desired . GIPAN is performed by real time PCR and identifies 21 stool pathogens.

Normal Volume
5 mL stool
Minimum Volume
5 mL stool

Billing Information

CPT Code
87177 O&P Exam, 87209 Trichrome Stain
Pro Fee Code
10704-5 OPE, 43227-8 TRIFEE

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.