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Table 3 Reference values for selected indicator bacteria and stool pH

From: No effects of a 4-week post-exercise sauna bathing on targeted gut microbiota and intestinal barrier function, and hsCRP in healthy men: a pilot randomized controlled trial

Species [Genus] Standard [Log10 CFU/g feces] Method
Bifidobacterium spp. ≥ 8 Real-time PCR
Bacteroides spp. ≥ 9 Real-time PCR
Faecalibacterium prausnitzii ≥ 9 Real-time PCR
Akkermansia muciniphila ≥ 8 Real-time PCR
Feces pH 5.8–6.5