Blastocystis hominis is the most prevalent parasite but often isn’t detected due to poor laboratory techniques.
Smart Nutrition’s lab partner detects Blastocystis in more than 20% of clinical specimens.
The weight of evidence supports treating it as a potential pathogen. Together with other weak pathogens, it is associated with many chronic conditions, including irritable bowel, chronic fatigue and arthritic/rheumatoid complaints. Three forms have been identified, and the vacuolated form is most commonly seen in faecal specimens.
Blastocystis hominis is often found in patients with classic symptoms of irritable bowel syndrome.
Treatment with metronidazole has been found to eradicate the organism. Blastocystis hominis may be highly variable in its pathogenicity.
The organism is present in a number of healthy individuals, and an asymptomatic carrier state has been postulated. In many patients with gastrointestinal illness, this organism is the only identifiable parasite, and these patients improve when Blastocystis is eradicated.
We find its presence highly correlates with gastrointestinal symptoms; and, along with others, suggest it may be a pathogen in symptomatic patients.
US Custom changes Aug 29 2025
Every US shipment, regardless of value or content, must now undergo full entry with U.S. Customs and Border Protection (CBP).
Our lab partners are working hard to reduce the impact of these new customs procedures on returning US bound test samples.
Unfortunately this change may impact your test results turnaround time
Transit times may be longer due to increased customs processing.
Samples may be delayed or held while clearance is completed.
If you have already sent back your sample and it is directly affected by these customs delays, our team will contact you individually to advise on the next steps.
We know how vital timely testing is for you and we greatly value your understanding while these changes take effect.
We expect the situation to improve as customs processes adjust, and we will provide updates as this develops.
Please do not return samples to the laboratories that may arrive after Wednesday 27th March and up to and including Monday 2nd April.
The laboratories are closed from the 28th March – 2nd April for the Easter Holiday.
