TABLE 1.

qPCR standards and detection limits

Bacterial group	Representative strain used for standard curve	Detection limit (log ng/μl)
Total bacteria	B. fragilis lab strain	−2.0
Lactobacillus	L. delbrueckii lab strain	−3.7
Bifidobacterium	B. adolescentis lab strain	−4.0
Clostridium cluster I	C. paraputrificum 16480	−3.0
Clostridium cluster XI	C. difficile 17450	−4.0
Clostridium cluster XIV	C. coccoides ATCC 29236	−6.0