Figure 4. Self-contained, distributable version of the paper-based SCD newborn screening test kit, comprised of off-the-shelf components.

The kit consists of one exact volume pipette for blood collection, two tubes containing lysis and deoxygenation buffers respectively, one syringeless filter, one dropper for depositing the mixture on paper, and one patterned piece of chromatography paper. Ten cent U.S. coin shown for size reference (17.9 mm diameter).