. Author manuscript; available in PMC: 2017 Jan 1.

Published in final edited form as: Biol Blood Marrow Transplant. 2015 Sep 16;22(1):4–10. doi: 10.1016/j.bbmt.2015.09.001

Table 3.

Biopsy Results and Confidence Levels

Pathology Results	Target Organ Confidence Level
Pathology Results	Treated as GVHD	Not treated but GVHD in differential diagnosis	Not treated and GVHD not in differential diagnosis
Positive	Confirmed	Confirmed	Confirmed
Equivocal	Probable	Possible	Possible
Non-Diagnostic	Probable	Possible	Negative
Non-GVHD Etiology	Probable	Negative	Negative

GVHD confirmed in a biopsied target organ raises the confidence level from possible to probable for other target organs where GVHD is suspected, even in the absence of treatment.