DNA/RNA tests Tests for<unk>  DNA can look for either DNA or RNA. They typically use reverse transcriptase polymerase chain reactions to multiply the amount of genetic material in a small sample into an amount that is measurable. The genetic material is generally taken from the nose/sinus. One study found clinical sensitivity was found to range from 66 to 80%. Another found accuracy of 70%. A newer form uses CRISPR to produce a test result without requiring lab equipment. The test reacts with genetic material to produce a visible signal without requiring amplification. Serological tests Serological tests look for the presence of antibodies in a test sample. Antibodies are materials that the body produces to fight off an infection. The primary antibodies sought in<unk>  testing are IgE and IgG. Rapid antigen tests A rapid antigen test quickly searches for antigens, protein fragments that are found on the surface of or within a virus. Antigen tests can be analyzed within a few minutes. Antigen tests are less accurate than PCR tests. It has a low false positive rate, but a higher false negative rate. A negative test result may require confirmation with a PCR test. Advocates claim that antigen tests are less expensive and can be scaled up more rapidly than PCR tests. Antigen tests are available for a variety of conditions, including streptococcus, influenza, giardia, Ebola and Helicobacter pylori. Antigens can be detected via blood, urine or stool. Imaging Imaging such as computerized tomography can be used to inform a diagnostic process. CT scans are considerably more expensive than nucleic acid tests and involve a small dose of radiation. For COVID-19, they are seen as the most accurate diagnostic tool, because the<unk>  creates patchy "ground glass" areas in the lungs that are revealed by a scan. One study found 97% sensitivity.
Viral disease testing
Liver function tests
Screening cultures
Blood compatibility testing
Saliva testing
Thyroid function tests
Neuropsychological test
Toxicology testing