The A1C test can also be used to diagnose gestational diabetes in the first trimester.

Doctors may order a cyclic citrullinated peptide (CCP) antibody test and other exams to confirm or rule out a rheumatoid arthritis (RA) diagnosis. A positive CCP antibody test doesn’t necessarily mean ...

The test may make it easier to identify whether people with memory and thinking problems have Alzheimer’s or not. By Pam Belluck A blood test that can help diagnose Alzheimer’s disease has received ...