Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

If you’re sexually active, regular testing for sexually transmitted diseases (STDs) and infections (STIs) is crucial to protect your health and the health of your partners. While you can get tested at ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

What Is a Lactic Acid Blood Test? It’s a test that measures the amount of lactic acid (also called “lactate”) in your blood. This acid is made in muscle cells and red blood cells. It forms when your ...

Food intolerances, food sensitivities, and food allergies can all produce negative symptoms, ranging from undesirable to downright dangerous. Food intolerances can produce uncomfortable or ...

The glomerular filtration rate (GFR) is a measure of how well your kidneys are removing waste from your blood, which can be determined using an estimated GFR (eGFR) test. The test gets its name from ...

Bacteria are organisms that consist of a single cell without a nucleus and with distinct structural, physiological and evolutionary characteristics. Bacteria form one of the three domains of life; the ...

Microbiology is the study of microscopic organisms, such as bacteria, viruses, archaea, fungi and protozoa. This discipline includes fundamental research on the biochemistry, physiology, cell biology, ...