Cryptosporidiosis Stool Test

What is Cryptosporidiosis?

Cryptosporidiosis is a diarrheal disease caused by microscopic Cryptosporidium parasites that infect the intestines. It is caused by ingesting Cryptosporidium oocysts through contaminated water, food, or contact with infected individuals or animals. The Ova & Parasites with Giardia Antigen stool test is the most important test for diagnosis because it directly detects Cryptosporidium parasites and their eggs in stool samples.

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What causes cryptosporidiosis?

Cryptosporidiosis is caused by Cryptosporidium parasites, microscopic organisms that infect the small intestine. You get infected by swallowing Cryptosporidium oocysts, which are hardy parasite eggs that survive in water even with chlorine treatment. Common sources include contaminated swimming pools, lakes, untreated drinking water, and contact with infected animals or people. The parasites are highly contagious and only a few organisms are needed to cause infection, making outbreaks common in daycare centers, water parks, and among close contacts of infected individuals.

What is the best test for cryptosporidiosis?

The Ova & Parasites with Giardia Antigen stool test is the most important test for cryptosporidiosis because it specifically detects Cryptosporidium parasites and their eggs in your stool sample. This comprehensive parasitology test uses microscopic examination and antigen detection methods to identify the microscopic parasites that standard stool cultures might miss. The test is essential for confirming the diagnosis since cryptosporidiosis symptoms mimic many other gastrointestinal infections, and accurate identification ensures you receive appropriate treatment and helps prevent spreading the infection to others.

When should I get tested for cryptosporidiosis?

You should get tested if you develop watery diarrhea lasting more than three days, especially after swimming in pools or lakes, drinking untreated water, or traveling to areas with poor sanitation. Testing is particularly important if you have stomach cramps, nausea, dehydration, or low-grade fever along with diarrhea. Get tested immediately if you have a weakened immune system from HIV, cancer treatment, or immunosuppressive medications, as cryptosporidiosis can become severe and life-threatening in immunocompromised individuals.

What are the symptoms of cryptosporidiosis?
Symptoms of cryptosporidiosis typically begin 2 to 10 days after infection and include watery diarrhea that can be profuse and last for weeks. You might experience stomach cramps, nausea, vomiting, low-grade fever, and loss of appetite. Dehydration is common due to fluid loss from diarrhea. In healthy people, symptoms usually resolve within two weeks, but in those with weakened immune systems, the illness can become chronic and severe, potentially lasting months and causing dangerous weight loss and malnutrition.
Who is at risk for cryptosporidiosis?
Young children in daycare settings are at high risk due to close contact and poor hand hygiene. People with weakened immune systems from HIV/AIDS, cancer treatment, or organ transplants face the greatest risk of severe infection. Others at increased risk include swimmers in public pools or lakes, travelers to developing countries, people who work with animals, caregivers of infected individuals, and anyone drinking untreated water from wells or streams. Healthcare workers and childcare providers also have elevated exposure risk.
What happens if cryptosporidiosis is left untreated?
In healthy individuals, untreated cryptosporidiosis usually resolves on its own within two to four weeks, though severe dehydration can occur if fluid loss is not managed. However, in immunocompromised people, untreated infection can become chronic and life-threatening, causing persistent diarrhea, severe malnutrition, dangerous weight loss, and electrolyte imbalances. The parasite can spread beyond the intestines to the bile ducts, pancreas, and respiratory tract, leading to serious complications. Early diagnosis and supportive care are essential to prevent severe dehydration and complications, especially in vulnerable populations.
Can cryptosporidiosis be diagnosed with a blood test?
Cryptosporidiosis cannot be diagnosed with a blood test because the parasites live in the intestinal tract and are shed in stool, not in the bloodstream. Diagnosis requires a specialized stool test like the Ova & Parasites with Giardia Antigen test that can detect Cryptosporidium parasites and their eggs under microscopic examination. Multiple stool samples collected over several days may be needed since parasite shedding can be intermittent. Blood tests may be ordered to check for dehydration and electrolyte imbalances caused by the infection, but they cannot detect the parasite itself.
How is cryptosporidiosis treated?
Treatment for cryptosporidiosis focuses primarily on managing symptoms and preventing dehydration through oral rehydration solutions or intravenous fluids in severe cases. In healthy people, the infection typically resolves without medication within two weeks. For immunocompromised patients, the antiparasitic medication nitazoxanide may be prescribed, though it is less effective in those with severely weakened immune systems. Restoring immune function through antiretroviral therapy in HIV patients is crucial for clearing the infection. Anti-diarrheal medications are sometimes used but should only be taken under medical supervision.
How can I prevent cryptosporidiosis?
Prevent cryptosporidiosis by practicing thorough hand washing with soap and water, especially after using the bathroom, changing diapers, or touching animals. Avoid swallowing water while swimming in pools, lakes, or rivers, and do not swim if you have diarrhea. Drink only treated or bottled water when traveling, and avoid ice made from untreated water. Wash fruits and vegetables thoroughly before eating. If you are immunocompromised, take extra precautions including avoiding contact with farm animals and young children in diapers, and consider using additional water filtration at home.
What can I do at home for cryptosporidiosis?
At home, focus on staying well-hydrated by drinking plenty of water, oral rehydration solutions, or electrolyte drinks to replace fluids lost through diarrhea. Eat bland, easy-to-digest foods like rice, bananas, toast, and applesauce when you can tolerate food. Rest as much as possible to help your body fight the infection. Avoid dairy products temporarily as they may worsen diarrhea. Practice strict hygiene by washing your hands frequently and disinfecting bathroom surfaces to prevent spreading the infection to family members. Monitor for signs of severe dehydration such as decreased urination, dizziness, or extreme weakness, which require immediate medical attention.
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In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option.

Just text or call us at 754-799-7833, email us at support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.
Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?
Absolutely! We totally understand that errors can happen. No worries, we're here to help you.

Just reach out to us via text at 754-799-7833 or shoot us an email at support@privatemdlabs.com. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you.

There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out.

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Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts.

This policy applies to all insurance companies, including federal health insurance programs like Medicare.

If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.
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We get it – sometimes your needs change.

As long as your samples haven’t been collected yet, we’re happy to help you cancel your order.

If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com.

You can read more about our cancellation policy here.
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During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp).

Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym.

If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.
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Ova & Parasites w/Giardia Antigen (Stool)
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What's included
Fast & easy, results by email & SMS
No need to visit a doctor
Private & confidential
No insurance needed
Results explained
No extra fees paid at the lab

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