RAPID-VIDITEST FOB+Tf is a rapid test intended for the detection of hemoglobin and transferring in the stool samples. Transferrin positive samples are indicative of the upper intestinal tract bleeding. Hemoglobin positive (and transferrin positive) samples are indicative of the lower intestinal tract bleeding. No diet is required before test proceduce. RAPID-VIDITEST FOB is a rapid test intended for the detection of hemoglobin the stool samples. Hemoglobin positive samples are indicative of the lower intestinal tract bleeding. No diet is required before the test proceduce.