A gut microbiome test collects a small sample (often stool) at home and sends it to a lab. The lab then extracts microbial DNA from the sample.
Next, DNA sequencing or targeted testing identifies which microbes are present and estimates their relative abundance. This helps show the mix of bacteria that may support digestion, barrier function, and other gut functions.
Finally, your report summarizes patterns, such as diversity and groups of microbes. Because symptoms can have many causes, the results are typically used as context alongside your diet, health history, and goals.