
The D6323 by Zymo Research is a 1 mL human fecal reference material with TruMatrix Technology, containing ~10 mg feces/mL, ~6 µg DNA/mL, and ~11 µg RNA/mL from a single homogenized batch of over 2 million identical preparations. Stored in DNA/RNA Shield with fully inactivated pathogens, D6323 serves as a reproducible positive control for 16S amplicon sequencing, metagenomics, and metatranscriptomics workflows.