I've been using the OmniPod for a while, and have primarily used the PDM to test BG. However, this morning I decided to check more carefully and checked with both PDM and Freedom Lite meter (actually did 2 checks each from the same "stick"). I used the old strips for the PDM and the new strips for the meter. Both times my PDM readings were 100 (+/-) points higher than the meter. Obviously, I don't know which to believe.
I will appreciate feed-back. This has thrown me for a "loop" this morning.
I'd like to start by saying in the past years a number of questions have come up from many places about the accuracy of BG meters. Some of the questions getting up to the FDA level and other legal avenues. I've not heard any real outcome from these questions though.
I'd start with Insulet on the validity of your PDM, or the possibility you may have a bad one. In my testing so far (I've been on my Omnipod for about 1 day so far...) I've found my PDM to be about 10% to 20% lower than the other Freestyle meters I own. Which seems to be the norm from other people's posts here.
In your test, you mention "from the same stick" Did you actually use the same stick twice? If so, that would invalidate your reading right off. The test is a very tightly balanced equation of electrical resistance upon chemicals. Once a strip's been used, it's worthless. You'd be better off testing individual strips once only from the same bottle many times before drawing a conclusion.
Good luck with your findings.
I think Tinkersmom said from the same stick (prick), not from the same strip. A strip won't let you use it twice, if I'm not mistaken.
Yep, read that the second time. Thanks for the affirmation.
Test with the control solution. The result should be 104 mg/dl.
This is a question that has plagued me for years. My PDM has always given me lower (about 10-20%) then any other meater, When I was concictently wearing a Dex I once was tesing on the PDM, reading my Dex, then testing via One Step system. Never had concistent results, so I decided to go to my Endo for some answers. She could only suggest that I get a test done in her lab, then do a test myself on the PDM and the Dex and just figure what the differences were approzimately and apply those differences each time I do the testing myself. On that day the lab test she did was the closest to the PDM (Freestyle), the PDM test was approzimately 5% higher, so that is the formula I use whenver I do a fingerstick.
And also, I agree with Helmut.
Test with the solution on all meters used.
Very good info. I also have an Accu-check meter which I think is very close to reality, so I'll check them side by side too.
Here's what I just did.
Same finger, same blood drop.
Omnipod (code 16) - 67 (no hypo symptoms)
New iBG Star Meter - 100
Omnipod (code 19) - 87
For the record, I've used the Omnipod Meter since I went on the Omnipod 2+ years ago. I've heard the same though, that it typically runs on average 10-20% lower than other meters.
oops and I forgot to add : Dexcom CGMS - 81
Just did another test.
Omnipod (code 19) - 76
Omnipod (code 16) - 63
iBG Star - 92
Dexcom - 78
How does one acquire "code 19"? I can only get code 16 and have never seen another code since about a year ago. Pls advise.