Q. I have a tendency to faint when I have blood tests and when I hear about medical procedures. What do these fainting episodes mean for my general health? Are there any supplements that can help? A.

The anion gap blood test measures the acid-base and electrolyte balance in the blood. Results can show whether there is an imbalance in a person’s pH levels, which may be making the blood too acidic ...

The results of a home pregnancy test aren't always black or white (or clearly blue or pink!). If you see a faint line on a pregnancy test, especially if you took the test correctly, you're probably ...

Brad Reisfeld is a professor of chemical and biological engineering, biomedical engineering, and public health at Colorado State University. Your blood serves numerous roles to maintain your health.

Following your doctor’s instructions is the most important part of preparing for a blood test. Sleeping well, staying hydrated, and avoiding certain foods and drinks can also provide benefits. Blood ...

If your doctor suspects you have one of several diseases, they may want to perform an “enzyme-linked immunosorbent assay” test. This is more commonly known as an ELISA test, and it can help to confirm ...