Abstract: A device for testing a biological sample includes a housing, two or more test pads, and a sample pad. The sample pad and test pads are disposed within an interior portion of the housing. The sample pad is in fluid communication with an opening defined in an outer surface of the housing for receiving the biological sample. At least a portion of each test pad is in contact with the sample pad and is configured to test the biological sample. At least one window is defined in the outer surface of the housing adjacent the test pads such that the test pads are visible from outside of the housing. A first test pad may detect a threshold amount of CD44 in the biological sample, and a second test pad may detect total protein in the biological sample. The results are then used for early detection of cancers.