Abstract
We compared the minimum detection limit and the stability of hemoglobin in fecal samples using three sampling devices, followed by RPHA detection using hemoglobin-added artificial feces. The minimum detection limit of hemoglobin was lowest for the filter paper device, then the NEW-Stick device, and finally the Hemtube manual device. The hemoglobin stability in the artificial feces at the concentration of the minimum detection limit was maintained for 2 days after sampling with the NEW-Stick device and the Hemtube manual device, but the filter paper device showed an inferior result.
On the other hand, no decrease in the stability of hemoglobin in the three sampling devices was observed in the artificial feces, which were prepared at the high cut-off limit concentration as recommended by the manufacturer.
