? What is the nadir exactly?

is the nadir the halfway point between shots (for lantus, that would be 6 hours)? Or is it the lowest recorded point between shots?

Thanks

 

It is that, the lowest BG. For Lantus that is usually between 5-7 hours

 

Ok so its possible that you could miss a reading of the nadire, unless you were testing hourly? I mean you would focus testing between 5-7 but it could theoretically happen earlier or later and you wouldnt know unless you were testing at least hourly? I'm trying to understand this.

 

Usually one does what is called a curve, which is taking a BG reading every two hours after a shot. That will give a good indications at at what time is the nadire. Based on the curve one may later what to take a BG reading a say +5 or +7 or another time if it looks like the nadire is at other than about +6

 

I've done curves, yes.

Is it possible for the time of nadir to change every day, or every so often, though everything else remains the same (food, dosing, etc)?

 

There can be some day-to-day change and it can be affected by dose and diet