Increased patient compliance, Greater reliability vs. traditional guaiac tests (lower sensitivity 0.5 ugHb/ml) #DTG-FOB01-Box of 30-IFOB Test Cassettes, 35-Sample Collection Buffer Tubes, 1-Positive Control, 1-Negative Control, and Package Insert. Latex Free #DTG-MAILERS-50/Box Includes 50 Envelopes, 50 Collection Papers, & 50 Instruction Sheets. Latex Free #41116168