TTR and amyloidosis: This work describes the preparation of a radiolabeling method for 99mTc-p5+14 in 20 mCi doses which, with no purification, had >95% radiochemical yield and purity, >95% peptide purity and >90% bioactivity and could detect cardiac amyloid in a mouse model of AA amyloidosis as well as AL or ATTR amyloid deposits in human tissue sections.