This study was to evaluate the potential of ^99mTc-Hynic-fragments of Rituximab as radioimmunoscintigraphic agents for diagnosis of patients with Non-Hodgkin's Lymphoma (NHL). Rituximab was digested with immobilized pepsin and papain to yield F(ab')₂-Rituximab and F(ab')-Rituximab fragments respectively. Purified fragments were characterized by SE-HPLC and SDS-PAGE and subsequently radiolabeled with technetium-99m using Hynic as bifunctional chelator. The ^99mTc-Hynic-F(ab')₂-Rituximab and ^99mTc-Hynic-F(ab')-Rituximab exhibited good in-vitro stability and specificity to Raji cells. Biodistribution studies demonstrated rapid pharmacokinetics and clearance predominantly through renal route.