Add Yahoo as a preferred source to see more of our stories on Google. From CBC to CMP and beyond, blood test panels provide essential information to health practitioners. angelp/iStock via Getty ...

Failing a stress test occurs when you can’t complete it due to exhaustion or other factors. Abnormal results may indicate an underlying condition, such as coronary artery disease or a blockage. A ...

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The hepatitis A virus (HAV) antibody (AB) total test identifies both types of antibodies that the body produces in response to HAV infection. A reactive result means the test has detected HAV ...

The hepatitis B surface antibody test (HBsAb) detects antibodies in the blood to determine if someone is immune to the hepatitis B virus (HBV). A negative or nonreactive result means the individual is ...

So you have a cough and fever, and you just got test results back for the novel coronavirus: Negative! But wait a second. Your doctor may still caution you to act like you could have it. Stay home.