About 10 years back (must have been 33
then), after the ECG part of my Class 1, I was told I had an abnormal T wave ( Flat I think ), they granted my Class 1 and I underwent a stress ECG a month later as requested. Jogged on the treadmill for ten mins and got the all clear at the end.
At my next Medical I asked how was the T wave, thankfully there was not a bother on it and it never reared its head since. Dont worry needlessly about requests for extra tests. I was worried when I came to Hong Kong to fly, because their initial medical is a tough cookie, but there was no problems. Relax.