A polymerase chain reaction (PCR) test detects genetic material from a pathogen or abnormal cell sample. Ways of collecting samples include a nasal swab, a saliva swab, or taking a sample of blood.

Doctors check poop for DNA as part of the screening process for colorectal cancer. It helps doctors diagnose people with this disease during its early stages or even when the cells are precancerous.

We found the AncestryDNA Test Kit to be a comprehensive effective method for exploring genealogy and connecting with distant relatives. Why you can trust Live Science Our expert reviewers spend hours ...

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The Colorado Bureau of Investigation announced the findings on Friday of an internal affairs investigation into a former CBI DNA scientist who has been accused of data manipulation of DNA test results ...

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Fresh details emerge as Mohbad's family reportedly insists on a post-mortem DNA test amid ongoing investigations into the ...

Mohbad's family rejects using relatives' samples for his son's paternity, demanding a post-mortem DNA test using the late ...

A woman who was born and raised in Egypt has shared her less-than-surprising results after doing an at-home ancestry DNA test. Maryam Farid Mohamed, who now lives in the U.K., paid £80 for a DNA test ...