When a simple test could change the course of a life, it can be a uniting force to call for change. For these four families, access to testing has helped end the painful search for answers when their ...

Plus, the ones our over-50 editors take and recommend.

Your doctor may recommend the creatine phosphokinase (CPK) test if there's a need to measure CPK enzyme levels in your blood. The cells in your body require this creatine kinase enzyme to generate ...

March 22, 2007 — The National Institutes of Health (NIH) National Institute of Neurological Disorders and Stroke (NINDS) announced today it is launching a large-scale clinical trial to determine ...

I received an interesting note about the supplement creatine, a compound from three amino acids that is mostly found in the body's muscles and brain. It was from an older reader who takes creatine and ...

Kidney function in clinical practice is currently estimated using serum creatinine; although it is known to be an imperfect marker, as it is influenced by many factors that are independent o ...

Creatinine levels are measured to gauge how well a person's kidneys are functioning. Normal creatinine levels are between 0.7 to 1.3 mg/dL for men, and 0.6 to 1.1 mg/dL for women. To lower your ...