Skip to content

Stool Parasite Ova and Cysts (Microscopic Examination)

Published: August 9, 2026Updated: August 16, 2026

This test checks for microscopic parasites, such as eggs or cysts, in your stool. It helps identify infections caused by worms or other microscopic organisms.

Quick summary

["Looks for hidden parasites in your stool to diagnose infections."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
10671-6
Short code
Worm Spec
Synonyms
Worm Spec
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your healthcare provider may recommend this test if you have symptoms like stomach pain, diarrhea, weight loss, or unexplained fatigue. It’s also used to diagnose or monitor infections from parasites like giardia, roundworms, or tapeworms.

What to Expect Before the Test

No special preparation is needed. You’ll provide a fresh stool sample in a container provided by your lab. Avoid using toilet paper or cleaning products that might alter the sample.

What Happens During the Test

A lab technician examines the stool under a microscope to look for parasite eggs, cysts, or other organisms. The test may also check for signs of inflammation or other abnormalities.

Possible Results and Next Steps

If parasites are found, your provider will discuss treatment options, which may include medications like albendazole or mebendazole. Follow-up tests may be needed to confirm the infection is cleared.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Stool Parasite Exam

Frequently asked questions

What does a positive result mean?
A positive result means parasites or their eggs were found in your stool. This confirms a parasitic infection, and your provider will guide you on treatment and next steps.
Can I take antibiotics for this test?
No, antibiotics won’t help with parasitic infections—they target bacteria, not parasites. Follow your provider’s instructions for treatment if parasites are found.
How soon will I get my results?
Results are typically available within 1–3 business days. Your provider will discuss them with you during a follow-up visit.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy