I'm 25 and went for a full heart check-up. My ECG and echo were both normal, but my first TMT test came back positive even though I didn't feel any pain or issues while exercising. I decided to take the TMT test again just to be sure, and this time it came back normal or negative. Why would the first TMT show positive? Do I need to look into this more or get further tests done?

The initial positive TMT result may be attributed to factors like dehydration, anxiety, or a false positive, especially since you didn't experience any symptoms during exercise and the repeat test came back normal; however, to confirm the absence of any underlying cardiac issues, consider discussing further evaluation with your cardiologist, such as a stress echocardiogram or a cardiac MRI, to rule out any potential concerns.