Long a dream, it's now real: a fast and accurate TB test that doesn't need phlegm

TB tests use phlegm — not the easiest thing to get or work with. It takes time for results. And there can be false negatives ...

Dear Doctor: Is there a difference in how blood test results are calculated from one lab to another?

I’m a 74-year-old male in good health. My lab work has been pretty consistent over several years. My cholesterol level is ...