A drug once dismissed as ineffective suddenly worked—when scientists tested it under more realistic conditions that mimic the ...

A calcium blood test checks your calcium levels to monitor bone, kidney, and thyroid diseases. You may get one of two main types of calcium blood tests: total calcium and ionized calcium tests. Too ...

Small measurement uncertainties in clinical laboratory tests can add large amounts to health care costs, according to a newly released study commissioned by the National Institute of Standards and ...