Add Yahoo as a preferred source to see more of our stories on Google. By now, most of us know the basics of taking a COVID-19 test at home. With cases, test positivity and hospitalizations due to ...

It's a common scenario for anyone who has tested positive for COVID-19 and spent several days in isolation. You’ve tested positive for COVID, done the responsible thing and isolated. Now it’s day 5, ...

Mean corpuscular hemoglobin concentration (MCHC) is a blood test that calculates the average concentration of hemoglobin in red blood cells in relation to their total volume. Low MCHC values may ...

Nothing puts a damper on your holiday plans like a positive COVID-19 test. But what if that line is super faint? Do you still have COVID-19 —or can you go ahead and attend your office party like you ...

For instance, if you only get a very faint line, it might be hard to know whether or not that means your results are positive. I know how that feels firsthand. After more than two years of evading ...