DiaTribe has an article on glucose meter accuracy by Jeemin Kwon and Adam Brown. I quote:
Results from the Diabetes Technology Society’s Blood Glucose Meter Surveillance Program identifies only six out of 18 meters that passed. Did yours make the cut?
The Diabetes Technology Society (DTS) recently revealed long-awaited results from its Blood Glucose Monitor System (BGMS) Surveillance Program. The rigorous study tested the accuracy of 18 popular blood glucose meters (BGM) used in the US. These FDA-cleared meters were purchased through retail outlets and tested rigorously at three study sites in over 1,000 people (including 840 people with diabetes). The results were troubling: only six out of the 18 devices met the DTS passing standard for meter accuracy – within 15% or 15 mg/dl of the laboratory value in over 95% of trials.
The devices that passed were:
- Contour Next from Ascensia (formerly Bayer) – 100%
- Accu-Chek Aviva Plus from Roche – 98%
- Walmart ReliOn Confirm (Micro) from Arkray – 97%
- CVS Advanced from Agamatrix – 97%
- FreeStyle Lite from Abbott – 96%
- Accu-Chek SmartView from Roche – 95%
The devices that failed were:
- Walmart ReliOn Prime from Arkray – 92%
- OneTouch Verio from LifeScan – 92%
- Prodigy Auto Code from Prodigy – 90%
- OneTouch Ultra 2 from LifeScan – 90%
- Walmart ReliOn Ultima from Abbott – 89%
- Contour Classic from Bayer – 89%
- Embrace from Omnis Health – 88%
- True Result from HDI/Nipro – 88%
- True Track from HDI/Nipro – 81%
- Solus V2 from BioSense Medical – 76%
- Advocate Redi-Code+ from Diabetic Supply of Suncoast – 76%
- Gmate Smart from Philosys – 71%
Source: Are Blood Glucose Meters Accurate? New Data on 18 Meters | diaTribe
Diabetic Mediterranean Diet 
Wow, It’s a wakeup call for us. If your information up to the mark then we think twice to use these kinds of devices.