New tests for heart disease: Promise but no payoff

Three blood tests designed to detect early heart disease aren't quite ready for prime time.

"It's tough to make predictions, especially about the future." — Yogi Berra

Cardiologists share Yogi's sentiment. Part of their job is to make predictions about an individual's chances of having a heart attack or stroke. It's a difficult task, since they must make do with limited information. To make matters worse, the stakes are high. An incorrect estimate could mean a person takes medications he or she doesn't need, or doesn't make the changes needed to prevent serious cardiovascular trouble.

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