Since serums are salivas are point in time tests, it is sometimes hard to get a hit on them anyway, and I used to fail urine average tests as my highs were high, but my lows were so low, it dragged the average down. It took testing over
and over,
and doing different types of tests, at different times, to figure out how I was high and when. It is not a disease anyone wants - it was featured in a magazine of the 10 most horrible disease or something like that (as a joke, but it was pretty true).