Table 1: Sensitivity and specificity of Congo red staining for amyloidosis related to tissue source.

Sensitivity (%)Specificity (%)Reference

Bone marrow63[2]
Kidney, liver, cardiac87–98[2]
Rectal69–97[3]
Fat-pad needle biopsy58100Guy and Jones cited in [4]
5575Ansari-lari and Ali cited in [4]
80100Hazenberg et al. cited in [4]
7893Dhingra et al. cited in [4]
80–85[2]
>90 increased exam[2]
19 (22 gauge)[5]
Computer assisted75 100[4]
Fat-pad biopsy7390[6]