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. 2021 Aug 5;184(16):4186–4202.e20. doi: 10.1016/j.cell.2021.06.007
Score Weight loss Stool Consistency Blood in stool
0 None Normal Negative
1 1-5% Soft but still formed Negative
2 6-10% Soft Blood traces in stool visible
3 11-18% Very soft; wet Blood traces in stool visible
4 > 18% Watery diarrhea Gross rectal bleeding