What if cotton swab used for paternity testing is dropped on the floor?

If a cotton swab used for paternity testing is dropped on the floor, it may become contaminated with bacteria, dust, or other substances, compromising the integrity of the DNA sample. It's essential to avoid using the swab if it has been dropped, as contamination could lead to inaccurate test results. The best course of action would be to discard the contaminated swab and obtain a new one for testing. Proper handling and storage of samples are crucial to ensure reliable outcomes in paternity testing.