I’m currently on day 2 of a water fast, and I’d like to do a minimum of 3 days, ideally 5. I would break my 3day fast on Wednesday, or Friday if it was 5 days.
I have to get blood work done no later than Wednesday next week. I’m getting thyroid, vitamin b12, and a few other things checked (I think red blood cells? I believe last test they were low). I don’t want my fast to effect my results at all.
I was wondering how long after breaking a fast will my stats get back to normal/my usual baseline?
Do I have time for a 5day fast, or do I need to break it on Wednesday?
Dr. Fung recommends eating your normal diet for 3-5 days following an extended fast, then fasting for 12-14 hours (or whatever was ordered) for your bloodwork, otherwise your lipid panel can be skewed.
I think that for the things you listed, there would be no problem even if you still fasting as they had the blood colected. The turnover rate for red blood cells is at least a month, your body is very efficient with vitamin B12, to the point that even in EV reposition therapys we have to wait a little to see results, the only one i am not so sure is the T3 and T4 count.
Fasting won’t affect these values, except maybe the b vitamins.
Thyroid, RBCs won’t change much unless your fast is crazy long. Maybe not even then. Lipids and glucose require at least 12 hours fasting when measured anyways. During longer fasts they stabilize to early fasting values.
As someone mentioned though, you will have ketones in your bloodbath urine. If they are testing for that, it will show up.