I don't know, I don't care. I'm a hyper metabolizer anyway, so even if I painstakingly measured every setup I have, (or went to just ONE for the day) well, I don't know how meaningful the overall amount would be anyway.
I just try to be healthy in other areas of my life, my blood pressure and whatnot is fine, I get labs done as needed, and I don't fret.
I did not sit around calculating my nicotine levels as a 3 ppd smoker, and I'm not going to do it now.
Interestingly, when I got sick enough to switch to vaping, my docs didn't much care either. The fact of the matter is, they were far more worried about TAR and how close I was getting to good and dx with COPD. To them, the nicotine levels were absolutely immaterial. They care about my cholesterol levels and need them to be lower due to the fact that I WAS a smoker, but they still only really care about my cholesterol and frankly that number, medically, seems to be an ever moving target as well.
I'm just not worried about it, and if I ever should be I'm sure my docs will inform me of such. Etc.
Anna