So I went for my blood test yesterday. I was adjusting my basal rate and as it turned out I had a low and had to drink some milk. I was supposed to fast. Eating breakfast afterward sent me a little high and as it turns out I was chasing the highs all day. What a fiasco. Hopefully I will have a better day today.

We always get an appointment around 9 to 9:30 AM so that we don’t have to wait at the crowded local lab for gawd-knows-how-long. I tend to run high the morning of my labs, on purpose, so that I don’t have to eat emergency carbs for a fasting test. Last time I did better and was close to 100 when my blood was drawn. :slight_smile:

Yes, I should know that by now, but I was adjusting my basal rate and I was pretty sure it was going to be okay. Oh well, there’s always next time.

We don’t bother fasting for the lab work.

If it is only for the BG component of the CMP - well - we kinda already know the diagnosis on that one.


Is CMP the type of test your doctor can see how some of your organs are working, like the kidneys? I know it isn’t required to fast anymore.

Comprehensive Metabolic Panel

Exactly. I already know I have diabetes and I know what my BG is pretty much every minute of the day (thanks CGM). Most run of the mill things tested for during routine labwork aren’t markedly impacted by not fasting. The only caveat is alcohol.

Updated info may no longer requires fasting for a number of tests that previously requested it.

If in doubt, check with your Doc as to whether it is really required or not.

For tests we routinely get such as CBC, CMP, Lipids, Celiac, Thyroid - fasting is not required.

As mentioned, we really don’t care what the Lab sees our (Type 1) BG as.

Note on the Lipids - There are definitely reasons why somebody may be required to fast but that is typically no longer needed for general screening lipid testing.

Yeah, I always ask my doc and either he or I writes “fasting” or “no fasting” on the lab slips so that when 3 months rolls by and it’s time to take the labs, I know if I have to fast or not.