Test Overview
Test Methodology

Microscopic exam

Test Usage

Establish the diagnosis of infection with Cystoisopora (Isospora).

Reference Range *

Cystoisopora (Isospora) seen.

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

Test Limitations

One negative result does not rule out the possibility of infection.

Test Details
Days Set Up
Monday, Wednesday, Friday
Analytic Time

48 hours. Specimens received on Friday or over Holidays may have extended analytic time.

Soft Order Code
MiChart Code
Cystoisopora (Isospora) Exam
  • Duodenal Aspirate: Cryptosporidia, Cyclospora, Cystoisospora (Isospora)
  • Feces: Cryptosporidia, Cyclospora, Cystoisospora (Isospora)
  • OPC
  • Parasite Exam: Cryptosporidia, Cyclospora, Cystoisospora (Isospora)
  • Sigmoid: Cryptosporidia, Cyclospora, Cystoisospora (Isospora)
  • Sputum: Cryptosporidia, Cyclospora, Cystoisospora (Isospora)
  • Stool: Cryptosporidia, Cyclospora, Cystoisospora (Isospora)
  • Cyclospora Exam
  • Cystoisospora (Isospora) Exam
Specimen Requirements
Collection Instructions

Collect fresh random stool, duodenal aspirate, or sigmoid specimen. If necessary, obtain specimen using a warm saline enema or fleets Phospho-Soda. 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 vial fluid. If necessary, place a urine bag on the patient to prevent urine contamination. Stool specimen may be collected directly from a diaper, except super absorbent types. Continue adding stool to the transport until specimen reaches the fill line. Transport kits may be held up to 1 week refrigerated or at room temperature. Sputum and other body sites are acceptable specimens by special request and should be sent in a sterile container. Indicate specimen source and collection date/time. Only submit 1 specimen per day. If an unacceptable specimen is received, the client will be notified before disposal of the original specimen.

Administration of barium, bismuth, Metamucil, castor oil, mineral oil
Normal Volume
5 mL stool
Minimum Volume
0.5 mL stool
Storage Temperature
Ambient: expiration date of transport
Refrigerated: expiration date of transport
Frozen: never
Rejection Criteria
Specimen not in transport or not completely emulsified in transport liquid; less than minimum volume; barium or other interfering substances in the stool; patient in-house >3 days
Additional Information

Test includes microscopic examination of concentrate using special stains.

CPT Code
Fee Code