To fast or not to fast? That is the question many people ask before a cholesterol test. Patients used to be routinely instructed not to eat for at least eight hours before the screening, and some ...

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 ...

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 ...

Lipoprotein (a) is a low-density lipoprotein that transports cholesterol in the blood. The lipoprotein (a) test — or Lp(a) test — determines the level of this lipoprotein in the blood, and its results ...

Vertigo is an unpleasant symptom triggered by a false sensory signal from your balance system to your brain that your surroundings are spinning, tilting, or moving, which can make you feel dizzy or ...

You may need an MPV test if you show symptoms that suggest an issue with your platelet size or number. An MPV test involves drawing a blood sample from a vein and typically takes less than five ...

Testing for meningitis may include a physical exam, blood tests, bacterial cultures, imaging, and a spinal tap for cerebrospinal fluid testing to confirm the diagnosis. Seek emergency care for severe ...

Diagnosing non-Hodgkin’s lymphoma usually starts with a physical exam, then moves to blood tests and imaging to guide next steps. A lymph node biopsy is the gold standard for lymphoma diagnosis, and ...