By: David Mendosa
Diabetes researchers at the American Diabetes Association’s 65th AnnualScientific Sessions in San Diego made thousands of presentations this year. Ofthe 2,851 available abstracts, 55 were about blood glucose testing. That’s asmall percentage of the total. But after winnowing through them, I found lots ofgold.
Testing on the Palm
Four presentations looked at the palm of the hand as a place to test. My first reaction was, Ouch!
In fact, testing on the palm hurts less than on a fingertip. One team ofresearchers came to this conclusion after analyzing studies of 290 people. WhenI brought myself to test on my palm, I agreed.
Another presentation compared how well palm and fingertip results comparedfor 181 people. Overall, the readings differed by only 2 percent. The differencewas a bit more when levels were rising fast (4 percent) or dropping fast (5percent).
Two other studies compared palm and fingertip tests among 95 people withheart problems and among 35 children. These studies confirmed that the resultsof the palm and fingertip tests are essentially the same.
But don’t test just anywhere on the palm. The researchers tested on theprotruding area near the base of the thumb and near the base of the little fingeralong the edge of the palm.
Sources: 2031-PO, 391-PO, 2037-PO, 2036-PO
Detecting Hypos Noninvasively
Two studies reported on trials of a noninvasive meter that detects the onsetof hypoglycemia. AiMedics, an Australian company, says that its HypoMon meterwill detect blood glucose levels below 45 mg/dl and provide an alarm. Topcompany officers made both presentations. They say that in tests with 20volunteers, the HypoMon was highly accurate.
Sources: 386-P, 619-P
Validation of Recent Reports
A report by six researchers compared the performance of the TheraSenseFreeStyle Navigator* and the Medtronic MiniMed CGMS. (“Meter News’ columns in the February and April 2005 issues of Diabetes Health reported on these continuous glucose sensors.) The researchers found the meters to be similar atnormal blood glucose levels, but the Navigator’s performance was better formeasuring hypos.
Three groups of Japanese and American researchers studied the1,5-anhydroglucitol (1,5-AG) test, the basis of the GlycoMark, reported in theJune issue of Diabetes Health. They found this test to be an excellent marker of blood glucose control, a strong predictor of high levels after meals andpossibly a good way to detect prediabetes.
Sources: 394-P, 307-OR, 389-P, 392-P
New Continuous Glucose Sensors
Two research groups evaluated an implantable continuous sensor beingdeveloped by DexCom, a San Diego-based company. In about 8,000 tests, itperformed well.
PreciSense, a Danish company, says that it is developing a sensor that is notonly continuous but also noninvasive and biodegradable. It will use fluorescentpellets that the body absorbs after at least 14 days of use.
Today the PreciSense sensor seems to offer an almost unbelievable combinationof features. But just a few years ago, we couldn’t have imagined any of thesemeters.
Sources: 398-P, 3-LB
* The FreeStyle Navigator is an investigational device. Limited by the UnitedStates FDA to investigational use only.