Cryptosporidium Stool Antigen Test (Qualitative)

Why This Test Is Done

Your healthcare provider may recommend this test if you have symptoms like persistent diarrhea, abdominal pain, or weight loss, especially if you’ve traveled to areas with higher parasite risks or have a weakened immune system. It’s also used to confirm a diagnosis in people with HIV/AIDS or other immune-compromising conditions.

What to Expect Before the Test

No special preparation is needed. You’ll likely provide a fresh stool sample in a container provided by your lab. If you’re using a collection kit, follow the instructions carefully to ensure accuracy.

What the Test Results Mean

A positive result means Cryptosporidium parasites were found in your stool, suggesting an infection. A negative result means no parasites were detected at the time of testing, but infection could still be present. Follow-up testing or additional evaluation may be needed if symptoms persist.

Possible Side Effects or Considerations

There are typically no side effects from this test. If you’re using a stool collection kit, ensure it’s stored properly until it’s sent to the lab to avoid contamination or degradation of the sample.