Biomarker Reference · Blastocystis
Blastocystis hominis (Blastocystis) is a clinical biomarker used in microbiome-gut assessment. Blastocystis hominis is a polymorphic protist commonly found in human stool; its pathogenic role remains contested. It is measured in 1 laboratory test on BiomarkersLabs.com.
Blastocystis hominis is a polymorphic protist commonly found in human stool; its pathogenic role remains contested. Multiple subtypes exist, and some studies associate higher parasite loads and specific subtypes with gastrointestinal symptoms, while others regard it as a commensal. Microscopy and PCR both detect it, with PCR offering higher sensitivity.
The clinical significance of Blastocystis detection is debated. Many carriers are asymptomatic, but some practitioners consider it in patients with unexplained bloating, diarrhoea, or irritable-bowel-like symptoms, particularly when other causes have been excluded. Treatment trials (metronidazole or nitazoxanide) are sometimes attempted, though evidence of benefit is inconsistent.
Reference ranges vary by laboratory and assay platform. Interpret in context of the issuing laboratory's stated range.
1 test on BiomarkersLabs.com include this biomarker.
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