Hi JJ, What symptoms are you experiencing, and what tests have you had that showed normal responses? For many tests it's not simply pass or fail. For an ECG treadmill test for example, there can be signs of possible heart disease, and the result classed as "marginal". And what about the patient - what possible factors might be present that could cause heart disease - age, smoking, family history, lifestyle, blood pressure, diet, obesity, cholesterol? Usually, at least some of these factors are pointers.
Cheers, Beefy.