Transferrin (TRF) Determination Reagent(Immunoturbidimetry) is an in vitro diagnostic quantitative test kit.This test is used for diagnosis of iron-deficiency anemia. TRF is a plasma protein used for iron ion transport. In people with high serum transferrin levels, a transferrin imbalance can have serious health consequences. Patients with elevated serum transferrin levels develop iron-deficiency anemia.