Most of mine are like the one on the right, although some are definitely positive. Does the 'faintness' depend on the person? ie. Do some people always have faint lines, even if they're totally clean? I used one on the synthetic as a comparison and it was the same as the control line so it's not down to the type of stick. I wish I had a way of getting the actual measurement in ng! Does the idea for hiding the synthetic sound OK? That's the thing I'm most worried about, as long as the tests don't catch the fact that I'm subbing.

God I hate drugs laws