General Information One-Step FOB Rapid Test is qualitative test for the detection of human blood hemoglobin in human stool specimens and early diagnosis for Colon Cancer by Fecal Occult Blood screening with double methods, immunology and chemistry No Cross reactivity :(Bovine, Hemoglobin, Swine hemoglobin, Horse hemoglobin, Bililrubin, Bovine serum albumin, Vitamin C) Analytical sensitivity : 20ng/ml of FOB (immunology) ,100ng/ml of FOB (chemistry) Specimen : Stool