Urine collection just isn't used for drug presence testing any longer -- and if you have a small amount of a protein called albumin in your sample, you could have a heightened risk for coronary death -- even if you have coronary artery disease that doctors label as stable.

3,000 patients were studied (aged 50 an up) and reported in on the current issue of Circulation, and although albumin is normally located in blood, its presence in urine indicates potential life-threatening kidney issues.

Specifically, leakage in the kidney filtration system and possible damage to cells that line the kidney's blood vessels. Next time you have a urine test, ask for the specific results yes?