Released quantity of full-stack anti-PfHRP2 immunocomplex was dependent on antigen concentration and membrane modification. Samples containing anti-PfHRP2 antibody conjugate (14 μg/ml, 15 nM), PfHRP2 antigen in plasma (0 – 100 ng/ml range), and 0.4 μg/ml anti-PfHRP2 detection antibody were captured, washed with 400 μl PBS-T, and released into 15 μl fractions from pNIPAAm-modified membrane (Mn = 9000) or unmodified Loprodyne filter membrane. Total micrograms of peroxidase-conjugated anti-PfHRP2 detection antibody, per precipitated release fraction, was determined by measurement of TMB substrate color development against a standard curve.